Answer:
mass=force/acceleration
m=10/20
m=0.5kg
A bob attached to a string of length L = 1.25 m, initially found at the equilibrium
position, is given an initial velocity v = 0.8 m/s. The maximum displacement angle,
Omax, is: (Take g=10 m/s)
17
3.2
13
10.2
6.4
Clear selection
A hoh attached to a string of length 2 m is displaced by an angle of 8º and then
The maximum displacement angle of the bob is 13⁰.
The given parameters;
Length of the pendulum, L = 1.25 mInitial velocity of the bob, v = 0.8 m/sThe maximum displacement of the bob is calculated by applying the principle of conservation of energy;
\(P.E = K.E\\\\mgh = \frac{1}{2} mv^2\\\\h = \frac{v^2}{2g} \\\\h = \frac{0.8^2}{2\times 10} \\\\h = 0.032 \ m\)
The maximum displacement angle is calculated as follows;
\(cos \theta = \frac{L-h}{L} \\\\cos \theta = \frac{1.25 - 0.032}{1.25} \\\\\cos \theta = \frac{1.218}{1.25} \\\\cos \theta = 0.9744\\\\\theta = cos^{-1}(0.9744)\\\\\theta = 13\ ^0\)
Thus, the maximum displacement angle of the bob is 13⁰.
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Consider the beam in (Figure 1). Take that w = 10 kN/m and P = 12 kN. Determine the normal force, shear force, and moment at point C. Follow the sign convention.
The normal force at point C is the force exerted perpendicular to the beam. Since the beam is in equilibrium, the sum of all forces in the vertical direction is equal to zero. Therefore, the normal force at point C will be equal in magnitude and opposite in direction to the total vertical force acting on the beam.
2. Shear force: The shear force at point C is the force acting parallel to the beam, causing it to shear or slide. To determine the shear force at point C, we need to consider the forces acting on either side of point C and take the sign convention into account. If we take the left side of point C, the shear force will be positive if it acts in the upward direction and negative if it acts in the downward direction. Similarly, if we take the right side of point C, the shear force will be positive if it acts in the downward direction and negative if it acts in the upward direction. We need to sum up the vertical forces on either side of point C and determine the difference to find the shear force at point C.
3. Moment: The moment at point C is the turning effect caused by the forces acting on either side of point C. To determine the moment at point C, we need to consider the forces acting on either side of point C and their perpendicular distances from point C. Again, we need to take the sign convention into account. Clockwise moments are considered positive, while counterclockwise moments are considered negative. We need to calculate the moments caused by the forces on either side of point C and determine the algebraic sum to find the moment at point C.
By applying these steps, we can determine the normal force, shear force, and moment at point C.
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What is a normal line? (a) A line parallel to the boundary between two media (b) A vertical line separating two media (c) A line perpendicular to the boundary between two media
A normal line is a line that is perpendicular to the boundary between two media. It is often used in optics to describe the behavior of light as it interacts with different surfaces.
When a light ray hits a boundary between two media at an angle, it will be refracted or reflected based on the angle of incidence and the properties of the media. The normal line is a reference line that is drawn perpendicular to the boundary at the point where the light ray hits it. This line helps to determine the angle of incidence and angle of reflection or refraction. It is important to note that the normal line is not always a straight line, but can be curved or angled depending on the shape of the surface it is interacting with. Therefore, the correct answer to the question is C) A line perpendicular to the boundary between two media.
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complete question:
What is a normal line? A) A line parallel to the boundary B) A vertical line separating two media C) A line perpendicular to the boundary between two media D) A line dividing incident ray from reflected or refracted ray E) Two of the above are possible
Identity the various levels of atmosphere
Multiple Choice
Which of the following is not an example of malicious code?
A Trojan horse
B worm
C virus
D. spy gear
Answer:
D
Explanation:
Spy gear is different from Spyware.
A +0.05 C charge is placed in a uniform electric field pointing downward with a strength of 100 Newtons over Coulombs.. Determine the magnitude and direction of the force on the charge.
The magnitude of the electric force on the charge is 5 N.
Magnitude of force on the chargeThe magnitude of force on the charge is calculated as follows;
F = Eq
where;
E is electric fieldq is magnitude of the chargeF = 100 N/C x 0.05 C
F = 5 N
Thus, the magnitude of the electric force on the charge is 5 N.
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Answer:
5n downward
Explanation:
took the assignment
Which of these questions is the best example of elasticity?
Answer:
Elastic goods and services generally have plenty of substitutes. As an elastic service/good's price increases, the quantity demanded of that good can drop fast. Example of elastic goods and services include furniture, motor vehicles, instrument engineering products, professional services, and transportation services.
Explanation:
elasticity of supply measures the responsiveness to the supply of a good or service after a change in its market price. According to basic economic theory, the supply of a good will increase when its price rises. Conversely, the supply of a good will decrease when its price decreases.
Which statements describe how self-reflection can benefit students? Check all that apply. It allows students to better understand what they are learning. It ensures that students understand what they are learning. It helps students perform better on tests and homework assignments. It helps students recognize when they need help in class. It helps students save time when studying for tests.
Answer:
a c d
Explanation:
yeet
Answer:
a c d
Explanation:
What Is the Specific Heat of Water? How Is It Special?
The specific heat of water is the amount of heat required to raise the temperature of a given quantity of water by 1 degree Celsius. It is special because it helps in regulating temperature in living organisms.
The specific heat of water has a value of 4.18 J/g°C, which means that it takes 4.18 joules of heat to raise the temperature of 1 gram of water by 1 degree Celsius.
Water has a high specific heat compared to other common substances, which means that it requires a large amount of heat to raise its temperature. This property of water makes it an excellent coolant, as it can absorb and store a large amount of heat before its temperature rises significantly.
Water's high specific heat also makes it important for regulating temperature in living organisms. The human body, for example, uses water to regulate body temperature. When the body overheats, it sweats, which allows water to evaporate from the skin, taking heat with it and helping to cool the body down.
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A girl coasts down a hill on a sled, reaching a level surface at the bottom with a speed of 6 m/s. the coefficient of kinetic friction between the runners and snow is 0.04, and the girl and the sled together weigh 733 n. the acceleration of gravity is 9.8 meters per second squared. how far does the sled travel on the level surface before coming to rest?
Please help me!! I will give lots of pints, rate your answer, give thanks and award you as the brainliest for the correct answer!!! :))
Answer:
a. 25 N. The box will move toward the greater force, however, I'm not too sure if that is enough to move a 100kg box.
Explanation:
First, let's define resultant force.
Resultant force is the total force of action enacted on a object or thing.
To get the resultant force of this problem, add 10 N to 15 N and you will get an answer of 25 N total.
The object will move toward the greater force because there is a larger difference between the force on the left.
A hair dryer uses the energy from the plug in order to power a small fan that blows air. When a hair dryer is being used, which is one of the energy transformations that takes place?.
Electrical energy is converted into the kinetic energy of the spinning fan and the thermal energy of the heated coils within a hair dryer when the appliance is turned on.
What is electric energy?Electrical energy is the capacity of the charged particles in an atom to start an action or move an object. The movement of electrons between atoms results in the production of electrical energy.
Every time you plug your toaster and phone charger into a wall socket, electrical energy is used to power them. Electric eels, batteries, and lightning are additional sources of this kind of power. However, electrical energy can also be converted into other types of energy, such as the thermal energy that warms your toaster and toasts your bread, or the mechanical energy that drives the acceleration of an electric car.
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with one-third of its volume submerged, a 4,000-kilogram boat floats. if two more people, each of whom weighs 690 newtons, get into the boat, what additional volume of water is displaced?
The required additional volume of water displaced is calculated to be 0.14 m³.
The weightiness of the added water displaced is equivalent to the joined weight of the two extra people who come to be into the boat,
m water g = 2 × 690 N = 1,380 N
The mass of the water which is displaced is
m water g = 1,380 N = 1,380 N / 9.8 m/s² = 141 kg
Computing the calculation for density for the volume of water displaced and practice this outcome for the mass of the water displace to get the answer:
ρ water = mass of water / volume of water
volume of water = mass of water / ρ water = 141 kg / 1000 kg /m³ (to eliminate kilogram)
⇒ 0.14 m³ the additional volume of water that is displaced
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A researcher warts to test the hypothesis that the awerage number of mles that a 2010 Honda Clvic can drive after its gas meter reads as empty is greater than 30 . She collects data from a sample of 50 cars and finds a sarmole mean of 37 . She assumes the standart deviation is 8 based on the literature about car manufacturing- What is the test statistic (Z-score)? 1.99 2.86 b.19 4.55
The test statistic (Z-score) is approximately 4.95.
To calculate the test statistic (Z-score) for this hypothesis test, we can use the formula:
Z = (sample mean - hypothesized population mean) / (standard deviation / sqrt(sample size))
Sample mean (X-bar) = 37
Hypothesized population mean (μ) = 30
Standard deviation (σ) = 8
Sample size (n) = 50
Substituting these values into the formula, we get:
Z = (37 - 30) / (8 / sqrt(50))
Z = 7 / (8 / 7.071)
Z = 7 / 1.414
Z = 4.95 (rounded to two decimal places)
A statistical hypothesis test is a technique for determining if the available data are sufficient to support a certain hypothesis. We can make probabilistic claims regarding population parameters using hypothesis testing.
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What generates the energy produced when small light atoms are combined into heavier ones
A. Fusion reactions
B. Chemical reactions
C. Fission reactions
D. Nuclear chain reactions
Answer:
A. Fusion Reactions
Explanation:
A bus starts at Shivam road at 07:00 AM and reaches GCS at 08:30 AM. The distance between Shivam road and GCS is 12km. Find the average speed of the bus.
Answer:
8km/h
Explanation:
Time=8:30 - 7:00 = 1.5 hours
Distance = 12 km
Speed = Distance / Time
=12/1.5
=8 km/h
average method and it reports the tollowing unit data tor the rorming department. Units completed in the torming department are transferred to the painting department. Production cost information for the forming department follows. . Calculate the equivalent units of production for both direct materials and conversion for the Forming department. o. Calculate the costs per equivalent unit of production for both direct materials and conversion for the Forming department c. Using the weighted average method, assign costs to the forming department's output-specifically, its units transferred to painting and its endina work in brocess inventorv. Calculate the costs per equivalent unit of production for both direct materials and conversion for the For Jsing the weighted average method, assign costs to the forming department's output-specifically, its 4 d its ending work in process inventory. Complete this question by entering your answers in the tabs below. Calculate the equivalent units of production for both direct materials and conversion for the forming department. a. Calculate the equivalent units of production for both direct materials and conversion for the Forming departm b. Calculate the costs per equivalent unit of production for both direct materials and conversion for the Forming c. Using the weighted average method, assign costs to the forming department's output-specifically, its units tra and its ending work in process inventory. Complete this question by entering your answers in the tabs below. Calculate the costs per equivalent unit of production for both direct materials and conversion for the forming department Required information Using the weighted average method, assign costs to the forming department's output-specifically, its units trar painting and its ending work in process inventory.
Given information: The average method reports the following unit data for the forming department. Units completed in the forming department are transferred to the painting department. Production cost information for the forming department follows.
Direct materials:
Units completed during the period = 45,000 units
Ending work in process inventory = 5,000 units
Direct materials cost = $202,500
Conversion costs:
Units completed during the period = 45,000 units
Ending work in process inventory = 5,000 units
Conversion cost = $189,000
a. Calculation of equivalent units of production for both direct materials and conversion for the forming department:
Equivalent units of production = Units completed during the period + (Ending work in process inventory * Degree of completion)
Direct materials:
Equivalent units of production = 45,000 + (5,000 * 50%) = 47,500 units
Conversion costs:
Equivalent units of production = 45,000 + (5,000 * 60%) = 48,000 units
b. Calculation of the cost per equivalent unit of production for both direct materials and conversion for the forming department:
Cost per equivalent unit of production = Total cost for the period / Equivalent units of production
Direct materials:
Cost per equivalent unit of production = $202,500 / 47,500 units = $4.26 per unit
Conversion costs:
Cost per equivalent unit of production = $189,000 / 48,000 units = $3.94 per unit
c. Calculation of the cost assigned to the forming department's output using the weighted average method:
Total cost = Cost of units transferred out + Cost of ending work in process inventory
Cost of units transferred out = Number of units transferred out * Cost per equivalent unit of production
Cost of ending work in process inventory = Number of units in ending work in process inventory * Cost per equivalent unit of production
Direct materials:
Cost of units transferred out = 40,000 * $4.26 per unit = $170,400
Cost of ending work in process inventory = 5,000 * $4.26 per unit = $21,300
Total cost = $170,400 + $21,300 = $191,700
Conversion costs:
Cost of units transferred out = 40,000 * $3.94 per unit = $157,600
Cost of ending work in process inventory = 5,000 * $3.94 per unit = $19,700
Total cost = $157,600 + $19,700 = $177,300
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a window-mounted air conditioner removes 3.5 kj from the inside of a home using 1.75 kj work input. how much energy is released outside and what is its coefficient of performance?
The amount of heat released outside is 3.5 kJ and the coefficient of performance is 2.
What is efficiency of a machine?The efficiency of the a machine or any device is the measure of effectiveness of the device. Efficiency describes how a machine converts input energy to output energy without wasting much of the input energy.
Mathematically, efficiency of a machine is given as;
E = output energy / input energy x 100%
The coefficient of performance (COP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work required.
The energy released outside = 3.5 kJ
COP = 3.5 kJ / 1.75 kJ
COP = 2
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PLEASE HELP
OPTIONS:
Bar one:
Constant acceleration
Constant velocity
Positive acceleration
Bar two:
Remains stationary
Slows down
Speeds up
Bar three:
Constant acceleration
Constant velocity
Positive acceleration
Answer:
bar one:constant acceleration
bar two:remains stationary
bar three:constant acceleration
The air temperature is 70 degrees, and the relative humidity is 90%. Which conclusion can be made?(1 point)
The air holds little water vapor and is relatively dry.
The amount of water vapor in the air is 90% of what the air can hold.
The dew point temperature is 90% of the air temperature.
The temperature must rise in order for air to become saturated with water vapor.
Answer:
The amount of water vapor in the air is 90% of what the air can hold.
Explanation:
The answer is A
Answer: The answer is B: The amount of water vapor in the air is 90% of what the air can hold
A racehorse gallops at a speed of 65 km / h. how long will it take to reach the finish line in a 1,500 m race?
It will take the racehorse approximately 83 seconds (or 1 minute and 23 seconds) to reach the finish line in a 1,500 m race at a speed of 65 km/h.
To find out how long it will take the racehorse to reach the finish line, we need to use the formula:
time = distance ÷ speed
where:
distance = 1,500 m
speed = 65 km/h = (65 × 1,000) m/h = 65,000 m/h
Now, we need to convert the speed from meters per hour to meters per second, since the distance is given in meters. We can do this by dividing the speed by 3,600 (the number of seconds in an hour):
speed = 65,000 m/h ÷ 3,600 s/h = 18.06 m/s (rounded to two decimal places)
Substituting the values into the formula, we get:
time = 1,500 m ÷ 18.06 m/s = 83.03 seconds (rounded to two decimal places)
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A cow has eaten 1500KJ of stored chemical energy in the form of food. 945KJ is exerted as waste products. 495kJ is used for respiration. How much of the original 1500kJ is stored as chemical energy in the tissues of the cow?
We need Net Energy
\(\\ \rm\Rrightarrow E_{net}=1500-(945+495)\)
\(\\ \rm\Rrightarrow E_{net}=1500-1440\)
\(\\ \rm\Rrightarrow E_{net}=60kJ\)
Answer:
60
Explanation:
What happens as the frequency of a wave increases?
Answer:
The number of complete wavelengths in a given unit of time is called frequency (f). As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer.
Explanation:
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The number of complete wavelengths in a given time is called frequency (f). As a wavelength increases in size, its frequency and energy (E) decrease.
what is frequency ?The frequency referred to the number of oscillation per unit time and it is used for defining the cyclic process like rotation, oscillation, wave etc.
The SI unit is denoted as Hertz and the symbol λ represents it where one hertz means the wave completed one cycle in one second.
The frequency explains the phenomenon of oscillatory and vibration like the mechanical vibration, sound signals, light, frequency waves etc. The “period” represented as the time required by the wave for one oscillation, i.e., it is inversely proportional to the frequency.
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Put the major layers of Earth's atmosphere in to the correct order from the ground upward.Drag the layers into place in the correct order from lowest altitude at left to highest altitude at right.-troposphere-stratosphere-thermosphere-exosphere
The Earth's atmosphere consists of several distinct layers, each with its own unique characteristics. From the ground up, these layers are organized in the following order: troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
The troposphere is the lowest layer of the atmosphere, extending from the Earth's surface up to approximately 8 to 15 kilometers in altitude. This layer contains most of the Earth's weather phenomena, such as clouds, rain, and snow. Temperature decreases with altitude in the troposphere. Above the troposphere is the stratosphere, which extends from around 15 to 50 kilometers above the Earth's surface. The ozone layer, which absorbs and scatters ultraviolet solar radiation, is located in this layer. Temperature increases with altitude in the stratosphere due to the absorption of UV radiation by the ozone. The mesosphere is not mentioned in the original question but is the next layer above the stratosphere, extending from approximately 50 to 85 kilometers in altitude. In this layer, temperature decreases with altitude, and meteors often burn up upon entering the mesosphere.
Above the mesosphere is the thermosphere, extending from around 85 to 600 kilometers above the Earth's surface. This layer contains the ionosphere, which is important for radio communications. The temperature increases with altitude in the thermosphere due to the absorption of solar radiation by the few gas particles present. Finally, the exosphere is the outermost layer of the Earth's atmosphere, extending from about 600 kilometers to the edge of space. In this layer, gas particles are widely dispersed, and the boundary between the exosphere and outer space is indistinct.
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How long will it take a person walking at 2.1 m/s to travel 13 m?
Answer:
I gonna give you the number so but you need to round 6.19047619048
Explanation:
This is a speed formula so you would use the formula speed=distance/timeYou need to rearrange it to time=distance/speedSo you need to divide 13m by 2.1 m/sfor a few hours, some satellites experienced electrical failure and at the same time, radio communications at high latitudes were also disrupted. which is an astronomer most likely to predict was the cause?(1 point) a geomagnetic storm a geomagnetic storm solar energetic particles solar energetic particles solar flares solar flares coronal mass ejections
The most likely cause of the electrical failure in satellites and the disruption of radio communications at high latitudes would be a geomagnetic storm.
A geomagnetic storm is a disturbance in the Earth's magnetic field caused by solar wind interactions with the magnetosphere.
During a geomagnetic storm, charged particles from the Sun, known as solar energetic particles, can cause electrical disruptions in satellites by inducing currents in their systems.
These particles can also affect radio communications by interfering with the ionosphere, particularly at high latitudes where the magnetic field lines converge.
Solar flares, which are intense bursts of radiation from the Sun, and coronal mass ejections (CMEs), which are massive eruptions of plasma and magnetic field, can trigger geomagnetic storms.
However, the given information does not specify any indications of solar flares or CMEs, making a geomagnetic storm the most probable cause in this scenario.
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identify the most reasonable unit to measure the height of an oak tree. choose 1 answer: choose 1 answer: (choice a) centimeters a centimeters (choice b) meters b meters (choice c) kilometers c kilometers
The most reasonable unit to measure the height of an oak tree would be (choice b) meters.
The most reasonable unit to measure the height of an oak tree is meters. Because Centimeters would likely be too small and impractical for such a large object, while kilometers would be too large and unnecessary for measuring the height of a single tree.
A measure is a quantification of a physical quantity, typically expressed using a standard unit of measurement. Measures are used to describe and compare the properties or characteristics of different objects, substances, or systems. For example, length is a measure that describes the distance between two points and is typically expressed in units such as meters or feet. Other examples of measures include mass, time, temperature, volume, and energy. The choice of measure depends on the context and the properties being studied.
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PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (40pts)
Answer: According to http://www.scifun.org, "Bernoulli's Principle says that the pressure decreases inside a stream of flowing air. When the balloon begins to move out of this low pressure stream, the higher pressure of the air in the room pushes it back into the moving stream"
consider a 10 kg object free-falling from a cliff with an initial speed of 0 m/sec. what will the speed of the object be after 1 sec and after 2 sec?
The speed of the object after 1 second and 2 seconds is 9.8 m/s and 19.6 m/s respectively.
The equation of motion to be used for calculation of velocity is -
v = u + at, where v and u are final and initial velocity, a is acceleration and t refers to time. Keep the value for each case to find the final velocity. The value of a will be acceleration due to gravity which is 9.8 m/s².
After 1 second
v = 0 + 9.8 × 1
v = 9.8 m/s.
After 2 seconds
v = 0 + 9.8 × 2
v = 19.6 m/s.
Hence, the required velocities are 9.8 and 19.6 m/s.
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A train accelerates to a velocity of 500 m/s over time of 2s. The acceleration it experienced was 50m/s2. What was its initial velocity?
Explanation:
We know ,
v = u + at u = v - at u = 500 - 2*50u = 400 m/s