1. A plane mirror has a
surface
Answer:
A plane mirror is a mirror with a flat (planar) reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. The angle of the incidence is the angle between the incident ray and the surface normal (an imaginary line perpendicular to the surface).
I need chapter one section three
What type of wave motion moves the particles perpendicular to the medium?
Answer: Transverse waves
Explanation:
Transverse waves cause the medium to move perpendicular to the direction of the wave. Longitudinal waves cause the medium to move parallel to the direction of the wave.
Discuss how directions fields and Euler's method are related. Draw the direction field and use Euler's method to approximate the solution at t = 10 using step size 1, for the initial value problem y'= -3y, y(0) = 5.
By Using Euler's method with two steps, we can find the approximate value of Y(2) is 2.125. , where Y is the solution of the initial value problem dy/dx = x - y, and Y(1) = 3.
Euler's method is defined as a numerical technique which is used to approximate solutions into ordinary differential equations. The method includes dividing the interval of interest into smaller steps and thereafter approximating the solution at each step by using the derivative of the function.
In this case, we are given the initial value problem dy/dx = x - y, with the initial condition Y(1) = 3. To approximate Y(2) using Euler's method with two steps, we will divide the interval [1, 2] into two equal steps.
Step 1:
We start with the initial condition Y(1) = 3. Using the differential equation dy/dx = x - y, we can approximate the value of Y at the midpoint of the interval [1, 2].
Using the step size h = (2 - 1) / 2 = 0.5, we can calculate Y(1.5) as follows:
Y(1.5) ≈ Y(1) + h × (x - y) = 3 + 0.5 × (1.5 - 3) = 3 + 0.5 × (-1.5) = 2.25
Step 2:
Now, using the value of Y(1.5) as the new approximation, we calculate Y(2) using the same process:
Y(2) ≈ Y(1.5) + h × (x - y) = 2.25 + 0.5 × (2 - 2.25) = 2.25 + 0.5 × (-0.25) = 2.125
Thus, by using Euler's method with two steps, the approximate value of Y(2) is 2.125.
To know more about Euler's method here
https://brainly.com/question/32513127
#SPJ4
The complete question is
Use Euler's Method With Two Steps To Approximate Y(2), Where Y Is The Solution Of The Initial Value Problem: Dy : X − Y, Y(1) = 3
The work done by a machine is always less then the work done on a
machine because of
Answer:
because of Friction is always present.
two parakeets sit on a swing with their combined center of mass 19.5 cm below the pivot. at what frequency (in hz) do they swing?
The parakeets swing with a frequency of approximately 1.14 Hz.
The frequency at which the two parakeets swing on the swing can be determined by considering the relationship between the period of oscillation and the length of the pendulum.
The period of a pendulum is the time it takes for one complete oscillation, while the frequency is the reciprocal of the period, representing the number of oscillations per unit time.
In this case, we are given the distance of the combined center of mass of the parakeets below the pivot, which is 19.5 cm.
To find the frequency, we need to calculate the length of the equivalent pendulum, which is the distance from the pivot point to the combined center of mass of the parakeets.
Assuming the length of the equivalent pendulum is L, we can substitute the given values into the formula for the period of a pendulum, T = 2π√(L/g), where π is a constant (approximately 3.14159) and g is the acceleration due to gravity (approximately 9.8 m/s^2).
Converting the distance from centimeters to meters, we have L = 0.195 m. Substituting the values into the formula, we obtain T = 2π√(0.195/9.8).
Simplifying the equation, we have T = 2π√(0.02), which evaluates to approximately 0.879 s.
To calculate the frequency, we take the reciprocal of the period: f = 1/T = 1/0.879 ≈ 1.14 Hz.
Therefore, the parakeets swing with an approximate frequency of 1.14 Hz.
Learn more about frequency at: https://brainly.com/question/254161
#SPJ11
How fast must a 250 gram cart be traveling to have a momentum of .450 Kgm/s?
The cart is 1.8 m/s fast when traveling.
The speed of the cart can be calculated using the formula of momentum.
Momentum:This can be defined as the product of mass and velocity.
Formula:M = mv.............. Equation 1Where:M = Momentum of the cartm = mass of the cartv = speed of the cart.
Make v the subject of the equation.
v = M/m................... Equation 2From the question,
Given:M = 0.450 kgm/sm = 250 g = 0.250 kg.Substitute these values into equation 2
v = 0.450/0.250v = 1.8 m/sHence, the speed of the cart is 1.8 m/s
Learn more about momentum here: https://brainly.com/question/7973509
. A microwave oven operates at 2.4GHz with an intensity inside the oven of 2500 W/m^2. What are the amplitudes of the oscillating electric and magnetic fields
Answer: A microwave oven operates at 2.4GHz with an intensity inside the oven of 2500 W/m^2. Then, the amplitudes of the oscillating electric and magnetic fields are, \(B_0=4.57*10^{-6} T and E_0=1.37*10^{3} V/m\)
Explanation: To find the correct answer, we have to know more about the EM Waves.
What are EM waves?Electromagnetic waves can be defined as the waves, that can interact with the matter and are created as a result of vibrations of electric and magnetic fields.Maxwell theoretically predicted the existence of electromagnetic waves.A time varying magnetic field is a source of electric field.Similarly, an oscillating electric field gives rise to an oscillating magnetic field.The amplitudes of electric and magnetic fields can relate as,\(E_0=cB_0\)
The expression for intensity of electromagnetic waves in terms of amplitude of magnetic field can be written as,\(I=\frac{1}{2u_0} cB_0^{2}\)
How to solve the problem?From the above expression of intensity, we can find the expression for amplitude of magnetic field as,\(B_0=\sqrt{\frac{2u_0I}{c} }=\sqrt{\frac{2*4*3.14*10^{-7}*2500 }{3*10^{8} } } =4.57*10^{-6} T\)
Thus, from the amplitude of magnetic field, we get, the amplitude of electric field as,\(E_0=cB_0=3*10^{8} *4.57*10^{-6} =1371 V/m\)
Thus, from the above calculations, we get the amplitudes of the oscillating electric and magnetic fields are, \(B_0=4.57*10^{-6} T and E_0=1.37*10^{3} V/m\)
Learn more about the Electromagnetic waves here:
https://brainly.com/question/28020090
#SPJ4
if a cyclist traveled southwest a distance of 12,250 meters in 1.7 hrs what would the velocity of the cyclist be?
Answer:
Velocity = 7.2 km/hr SW
Explanation:
Velocity is a vector that includes both speed and direction. Speed is calculated by dividing the distance travelled by the time required for that distance.
Speed = Distance/Time
i'll convert 12,250 meters into 12.250 kilometers (km). Not needed, but it's my preference. Time is 1.7 hours:
Speed = (12.250 km)/(1.7 hr) = 7.2 km/hr (to 2 sig figs)
The direction is southwest, or SW
Velocity = 7.2 km/hr SW
If one knew the luminosity of a star and measured its apparent brightness, which expression would one use to calculate the distance to the star
The expression which one would use to calculate the distance to the star is distance = sq. root. of (luminosity/4pi*apparent brightness)
What is Distance?
This is a scalar quantity and refers to how much ground a body has covered.
In a situation where parameters such as luminosity of a star and measured its apparent brightness are known then the distance to the star will be:
Distance= √(luminosity/4pi*apparent brightness)
Read more about Distance here https://brainly.com/question/17273444
In a road there are 1500 vehicles running in a span of 3 hours. Maximum speed of the vehicles has been fixed at 90km/hr. due to pollution control norms a vehicle can emit harmful gas up to a level of 30g/s. the wind speed normal to the road is 4 m/s and moderately stable conditions prevails. Estimate the level of harmful gas does wind of the road at 100m and 500m respectively
At 100m from the road, the estimated level of harmful gas is approximately 1.84 g/m³, and at 500m from the road, it is approximately 0.18 g/m³.
The level of harmful gas at the different intervalsConsidering the dispersion of pollutants due to wind speed and stability conditions using the Gaussian plume model.
Calculating the emission rate of harmful gas for all the vehicles on the road.
Each vehicle can emit up to 30 g/s, and there are 1500 vehicles running in 3 hours.
Total emission rate = (30 g/s) × (1500 vehicles) × (1 / (3 hours) × (3600 seconds/hour))
Total emission rate = 600 g/s
Now, we can estimate the level of harmful gas at different distances from the road using the Gaussian plume model. The equation for the ground-level concentration of a pollutant at a downwind distance x from the source is given by:
C = (Q / (2πuσy)) × exp(-(x - ux / H)² / (2σx²))
Where:
C = Ground-level concentration of the pollutant
Q = Emission rate (g/s)
u = Wind speed normal to the road (m/s)
σy = Vertical dispersion parameter (dependent on atmospheric stability conditions)
x = Downwind distance from the source (m)
H = Effective stack height (m)
σx = Horizontal dispersion parameter (dependent on atmospheric stability conditions)
For moderately stable conditions, the following values can be used:
σx = 0.09x
σy = 0.35x^0.8
The level of harmful gas at 100m and 500m from the road.
At 100m:
x = 100m
σx = 0.09x = 0.09 * 100 = 9m
σy = 0.35x^0.8 = 0.35 * (100^0.8) ≈ 24.92m
C = (Q / (2πuσy)) × exp(-(x - ux / H)² / (2σx²))
C = (600 g/s / (2π * 4 m/s * 24.92m)) × exp(-(100m - 0m)² / (2 * (9m)²))
C ≈ 1.84 g/m³ (rounded to two decimal places)
At 500m:
x = 500m
σx = 0.09x = 0.09 * 500 = 45m
σy = 0.35x^0.8 = 0.35 * (500^0.8) ≈ 124.60m
C = (Q / (2πuσy)) × exp(-(x - ux / H)² / (2σx²))
C = (600 g/s / (2π * 4 m/s * 124.60m)) × exp(-(500m - 0m)² / (2 * (45m)²))
C ≈ 0.18 g/m³ (rounded to two decimal places)
Learn more on air pollution here https://brainly.com/question/30988261
#SPJ4
Answer it fast and no spamming....! !
Example 1: Three resisters 10 12,20 ,30 12 ohms, are connected in
(a) Series (b) Parallel. Find the resultant resistance in the circuit.
answer correctly!✌️
Answer:
When the resistances are connected in the parallel the equivalent resistance will be always less than the value of the lowest resistance in the parallel circuit.
The equivalent resistance in the parallel circuit can be calculated using the following formula.
1/R=1/R1+1/R2+1/R3
1/R= 1/10+1/20+1/30
1/R=(6+3+2)/60
1/R=11/60
R=60/11
R=5.45 Ohms
What exactly occurs at the alveoli? Explain using blood vessels, diffusion, oxygen, and carbon dioxide in your answer (2-3 sentences)
Answer:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. Inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Explanation:
Hope this helps :)
which of these methods is used to determine which component in a circuit isn't working properly? voltage test, ohm amp draw or hopscotching
All of these methods can be useful in identifying a faulty component in a circuit, and which one to use depends on the specific situation and the experience of the troubleshooter.
When a circuit component fails, it can cause the entire circuit to malfunction. Troubleshooting a circuit requires identifying the problematic component so that it can be replaced or repaired. There are different methods to determine which component is not working properly, including voltage testing, ohm amp draw, and hopscotching.
Voltage testing involves measuring the voltage at various points in the circuit to identify where the voltage drop occurs, which can indicate a faulty component.
Ohm amp draw involves measuring the resistance and current flow through each component to determine if any are outside of their expected range.
Hopscotching involves checking each component in the circuit one by one, starting from the power source, to see which one is causing the problem.
Learn more about circuit at: https://brainly.com/question/2969220
#SPJ11
When two volleyball players strike the ball on opposite sides of the net with the same amount of force, what happens?
Answer:
The net force is zero because both volleyball players are hitting the ball with same force.
Explanation:
if a small rock is released from rest at point a, it will start accelerating towards the asteroid due to the force of gravity. (true or false?)
True, If a small rock is released from rest at point a near an asteroid, the rock will start accelerating towards the asteroid due to the force of gravity.
What happens to a rock when released?
Gravity is a fundamental force that exists between any two objects in the universe that have mass. According to Newton's law of gravitation, the force of gravity between two objects is directly proportional to their masses and inversely proportional to the square of the distance between them.
The formula for calculating the force of gravity between two objects is:
F = G * (m1 * m2) / r^2
The force of gravity depends on the masses of the objects and the distance between them. Therefore, the small rock will experience an attractive force towards the asteroid and will start accelerating towards it.
Learn more about force of gravity here: https://brainly.com/question/2537310
#SPJ1
In which part of the EM spectrum do you see the colors red, orange, yellow, green, blue, indigo, and violet (ROYGBIV);
gamma rays
ultraviolet rays
microwaves
visible light
Answer:
gamma rays
Explanation:
hope it helps
A subpanel in an older house that is wired with non-metallic sheathed cable (nm) has one circuit with a grounding wire. the grounding wire:_____.
A subpanel in an older house that is wired with non-metallic sheathed cable (nm) has one circuit with a grounding wire. the grounding wire should be connected to a separate grounded buss bar.
Brass, Aluminum or Copper Bus bars are metal strips or rods. They come in a variety of shapes and sizes that determine the maximum current (ampacity) they can carry safely and reliably. This also means that it is important to install the best one for a particular application.
Its job is to receive power from the delivery point and distribute it to the output circuits. However, unlike cables, no insulation is usually required. Busbars are often arranged in separate housings. Bus bars are used as nodes or nodes in power distribution applications and can be housed in switchgear or control cabinets and bus bar enclosures.
The grounding bar is used in environments where a common grounding point or grounding point is required or required in the distribution network. One of the main advantages of brass, aluminum, or copper grounding bars is that they can be placed anywhere on the chassis or rack.
This makes installation faster and more efficient than cables. A grounded (or neutral) bus reduces the need for regular maintenance and reduces the risk of downtime. This is very important in industries where uninterrupted power distribution is essential. Telecom and power supplies are two prominent examples.
However, it is not uncommon for some neutral bus bars to have insulation.
Learn more about bus bars here : https://brainly.com/question/8496713
#SPJ4
Weight is a measure of
A.the distance between two very large objects.
B.the amount of mass in an object.
C.the gravitational attraction between objects.
D.mechanical equilibrium.
who would benefit of your own handled problem?why?
Answer:
Define the problem . what's exactly going on ?
- set some goals
- examine the consequences
- put your solution into practice
- brainstorm possible solutions
- Team working
Explanation:
ANY PROBLEM RELATED TO MANI CUSTOMER BILLING ACCOUNTING IN BOOKKEEPING ETC
NING A WAY TO MAKE THE COMPANY MORE PRODUCTS FIDABLE THROUGH NEW SERVICE OR PRODUCT OFFERING NEW PRICING IDEA PROMOTING AND SALES IDEA
Which of the following solutions have a concentration of 0.11 g/mL?
Explanation:
Which of the following solutions have a concentration of 0.11 g/mL?
Answer:
22 g of acetic acid in 200 mL of water
Explanation:
22g/200mL = 0.11 g/mL
Draw the 3 examples of projectiles you see on the page.
Answer:
1- Throwing a ball or a cannonball
2- The motion of a billiard ball on the billard table
3- A motion of a boat in a river
What quantity is the sum of the kinetic energy and all forms of potential
energy in a system?
what is the best estimate of the speed of an object that moves 37 m in 8.3 seconds
the best estimate of the speed of an object that moves 37 m in 8.3 seconds is 4.45 m/s.
What is Speed ?Speed is a rate of change of distance with respect to time. i.e. v=dx÷dt. Speed can also be defined as distance over time i.e. speed= distance ÷ time it is denoted by v and its SI unit is m/s. it is a scalar quantity. Speed shows how much distance can be traveled in unit time.
To find dimension for speed is, from formula Speed = Distance ÷ Time Dimension for distance is [L¹] ,
Dimension for Time is [T¹],
Dividing dimension of distance by dimension of time gives, [L¹] ÷ [T¹] = [L¹T⁻¹] Dimension for speed is [L¹T⁻¹].
Speed = Distance/ time
Given,
Distance = 37m
time = 8.3s
Speed = ?
Speed = 37/8.3 = 4.45 m/s.
To know more about speed :
https://brainly.com/question/28224010
#SPJ2.
The density of aluminum is 2700 kg/m^3. If transverse waves propagate at 38 m/s in a 4.6 mm diameter aluminum wire, what is the tension on the wire?
a 39 N b 65 N c 52 N d 78 N
The correct option is B: The tension on the aluminum wire is approximately 65 N.
How to calculate tension in aluminum wire?To find the tension on the aluminum wire, we can use the formula for the speed of transverse waves in a string:
v = √(T/μ)
where:
v = speed of transverse waves
T = tension in the wire
μ = linear mass density (mass per unit length) = density * area
First, let's calculate the area of the aluminum wire:
Given diameter = 4.6 mm
Radius = diameter/2 = 4.6 mm / 2 = 2.3 mm = 2.3 x \(10^(^-^3^)\) m
Area = π * \(r^2\)
= π * (2.3 x 10⁽⁻³⁾)²
= π * (5.29 x 10⁽⁻⁶⁾)
≈ 1.658 x 10⁽⁻⁵⁾ m²
Now, let's calculate the linear mass density (μ):
Density of aluminum = 2700 kg/m³
Linear mass density (μ) = density * area
= 2700 kg/m³ * 1.658 x 10⁽⁻⁵⁾ m²
≈ 0.0447 kg/m
Now, we can rearrange the formula for the speed of transverse waves to solve for tension (T):
T = μ * v²
Given v = 38 m/s and μ = 0.0447 kg/m, we can calculate T:
T = 0.0447 kg/m * (38 m/s)²
≈ 63.9906 N
Rounding to the nearest whole number, the tension on the wire is approximately 64 N.
Therefore, the closest option from the given choices is: b) 65 N
Learn more about tension
brainly.com/question/32546305
#SPJ11
Particle A and particle B are held together with a compressed spring between them. When they are released, the spring pushes them apart and they then fly off in opposite directions, free of the spring. The mass of A is 2.00 times the mass B, and the energy stored in the spring was 121 J. Assume that the spring has negligible mass and that all the stored energy is transferred to the particles. Once that transfer is complete, what are the kinetic energies of each particles?
a ) ans: .............J (particle A)
b) ans: .............. J (particle B)
A The kinetic energy of particle A is 96.8 J.
b- The kinetic energy of particle B is 24.2 J.
The mass of particle A is 2.00 times the mass of particle B, we can represent the masses as mA = 2mB.
mA = 2mB
Total energy stored in the spring = 121 J
Let KA be the kinetic energy of particle A and KB be the kinetic energy of particle B.
From the mass ratio:
KA = (mA/mB)² × KB
KA = (2)² × KB = 4KB
Energy conservation equation:
KA + KB = 121 J
Substituting the value of KA:
4KB + KB = 121 J
5KB = 121 J
KB = 121 J / 5 = 24.2 J
Substituting this value back into the equation for KA:
KA = 4KB = 4 × 24.2 J = 96.8 J
learn more about kinetic energy here:
https://brainly.com/question/26472013
#SPJ4
A wave has a time period of 0.1s and is travelling at a speed of 340 m/s. calculate the wavelength of the wave
If a wave has a time period of 0.1s and is travelling at a speed of 340 m/s, the wavelength of the wave is 34 meters.
What is wave?A wave is a dynamic disturbance of one or more quantities that propagates in physics, mathematics, and related sciences. When waves oscillate frequently around an equilibrium value at a certain frequency, they are said to be periodic.
The wavelength of the wave = speed of the wave × time period of the wave
= 340 m/s × 0.1 s
= 34 m.
Hence, the wavelength of the wave is 34 meters.
Learn more about wave here:
https://brainly.com/question/25954805
#SPJ1
A 25.5 kg video cart is rolled down a hallway. It is accelerated at 0.12 m/s2. If a force of 30 N is applied to move the cart, what force of friction do the wheels have against the floor??
A 25.5 kg video cart is rolled down a hallway. It is accelerated at 0.12 m/s2. If a force of 30 N is applied to move the cart . The wheels have 26.4 N force of friction against the floor
Force of friction is that force that resists the sliding or rolling of one solid object over another
F(applied) - friction = F net
30 - fr = mass * acceleration
30 - fr = 25.5 * 0.12
fr = 30 - 3.06
= 26.4 N
The wheels have 26.4 N force of friction against the floor
To learn more about force of friction here :
https://brainly.com/question/13707283
#SPJ1
what is the average of this set of data 5, 18, 8, 4, 10
answer:
9
Explanation:
add them all together then divide
The strength of a magnetic field around a wire carrying a current of 20 A is 0.004 T. What is the strength of the magnetic field if the current is changed to 40 A ?
Given the increased current, the strength of the magnetic field around the wire carrying the current increases to 0.008T
What is the strength of the magnetic field if the current is changed to 40 A ?Given that;
First scenario
Strength of magnetic field B = 0.004TCurrent A = 20ASecond scenario
Strength of magnetic field B' = ?Current I' = 40AFirst, we determine the strength of the magnetic field.
B/I = B'/I'
0.004T/20A = B'/40A
B' = ( 0.004T × 40A ) / 20A
B' = 0.16AT / 20A
B' = 0.008T
Given the increased current, the strength of the magnetic field around the wire carrying the current increases to 0.008T
Learn more about magnetic field here: brainly.com/question/15695203
#SPJ12