The third force applied on the box of mass 13 kg, which changes velocity from (2-8, -8) m/s to (1.99, -797, -7.95) m/s in a short time interval of At = 0.01 s, is F3 = (-17.13, -10246, 11.65) N.
In this case, the net force is equal to the change in momentum of the box divided by the change in time, or
Fnet = Δp/Δt.
We can find the change in momentum by subtracting the initial momentum from the final momentum, or Δp = pf - pi.
The momentum of an object is equal to its mass times its velocity, or p = mv.
So, we can plug in the given values and solve for the third force, F3:
Fnet = Δp/Δt = (pf - pi)/Δt = (m(vf - vi))/Δt
Fnet = (13 kg)((1.99, -797, -7.95) m/s - (2-8, -8) m/s)/(0.01 s)
Fnet = (13 kg)((-0.01, -789, 0.05) m/s)/(0.01 s)
Fnet = (-0.13, -10257, 0.65) N
Since Fnet = F1 + F2 + F3, we can rearrange the equation to solve for F3:
F3 = Fnet - F1 - F2
F3 = (-0.13, -10257, 0.65) N - (11,-4.0) N - (-6, -7, -11) N
F3 = (-17.13, -10246, 11.65) N
Therefore, the third force is F3 = (-17.13, -10246, 11.65) N.
Your question is incomplete but most probably your full question was:
A box of mass 13 kg moves with a velocity which changes from (2-8, -8) m/s to (1.99, -797, -7.95) m/s in a short time interval At = 0.01 s Three forces are exerted on the box by objects in the surroundings, and these forces are constant during the short time interval. Two of these forces are F1 = (11,-4.0) N and 7 2 = (-6, -7, -11) N. What is the third force?
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Gravitational force depends on __________ and __________.
a.
mass, distance
c.
distance, strength
b.
mass, strength
d.
strength, speed
Please select the best answer from the choices provided
A
B
C
D
Answer: pretty sure it’s A
Explanation:
write an expression for the horizontal component of the system's initial momentum, pi,x, in terms of m, v1i and v2i.
When an object first begins to move, it has what is known as initial momentum. A mass moving at its initial velocity would have initial momentum.
How do you determine the starting momentum?Because the ball is moving to the left, we may use the equation pi=mvi p I = m v I to calculate the starting momentum, where m is equal to 1 kg and vi is equal to -7 m/s. -7 kgm/s to the left is the initial momentum. Locate the impulse and its course in step two.When an object first begins to move, it has what is known as initial momentum. A bowling ball's initial momentum, for instance, would be the ball's momentum immediately after the bowler releases the ball from his or her hand and starts rolling down the bowling alley.A mass moving at its initial velocity would have initial momentum.To learn more about Initial momentum refer to:
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physical sciences Practical test
so ummmm what about ?
because I cant see any actual question?
there are two principal scales we use. one is the major scale; the other is:
Answer:
The other principal scale is the minor scale.
Answer: Minor
Explanation:
What is the converse of the statement "No pilots are mechanics"?
a. No mechanics are pilots.
b. Some mechanics are pilots.
c. All pilots are mechanics.
d. None of these
The converse of the statement "No pilots are mechanics" is No mechanics are pilots.
Hence, the correct option is A.
The converse of a statement switches the subject and the predicate and negates both. In the original statement, the subject is "pilots" and the predicate is "mechanics."
The original statement states that there is no overlap between pilots and mechanics. In the converse statement, the subject becomes "mechanics" and the predicate becomes "pilots," and it still states that there is no overlap between the two groups.
Therefore, The converse of the statement "No pilots are mechanics" is No mechanics are pilots.
Hence, the correct option is A.
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A gravitational force of 2.54 x 10^-10 is exerted by two objects that are 0.25 m apart. If the first object has a mass of 0.35 kg, what is the mass of the second object?
Answer :
what is the answer options?
Explanation:
if r=3kω, c=100pf, vc0=100mv, and ω=105rad/s, what is vr?
This prompt is related ti circuits.
If r=3kω, c=100pf, vc0=100mv, and ω=105rad/s, then vr = 1 x 10⁻⁸ V
What is a circuit in physics?
A circuit is a closed loop through which electrons can move. In the circuit, electrical energy is supplied by a power source, such as a battery.
No electrons will travel unless the circuit is complete, that is, it makes a full circle back to the electrical source.
Thus, the above is computed as :
I = (100 x 10⁻³) (10³) (100 x 10 ⁻12)
I = 0.1 * 1000 * 0.0000000001
I = 0.1 * 1/10000000
I = 0.1/10 000 000
I = 1 x 10⁻⁸
Hence VR = 1 x 10⁻⁸
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sekazi is learning to ride a bike without training wheels. his father pushes him with a constant acceleration of 0.50 m/s2 for 6.0 s, and then sekazi continues at 3.0 m/s for another 6.0 s before falling. what is sekazi’s displacement?
we can state that Sekazi's displacement while learning to ride a bike without training wheels is 22.5 meters.
To find Sekazi's displacement, we can break down the problem into two parts: the time Sekazi's father pushes him and the time Sekazi continues on his own.
First, let's calculate the displacement when Sekazi's father pushes him.
We know that the acceleration is constant at 0.50 m/s² for 6.0 seconds. To find the displacement during this time, we can use the equation:
displacement = (initial velocity × time) + (0.5 × acceleration × time²)
Since Sekazi starts from rest, the initial velocity is 0 m/s. Plugging in the values, we get:
displacement = (0 × 6.0) + (0.5 × 0.50 × 6.0²)
displacement = 0 + (0.5 × 0.50 × 36.0)
displacement = 0 + (0.5 × 0.25 × 36.0)
displacement = 0 + (0.125 × 36.0)
displacement = 0 + 4.5
displacement = 4.5 meters
Now, let's calculate the displacement when Sekazi continues on his own at a constant velocity of 3.0 m/s for 6.0 seconds. Since the velocity is constant, the acceleration is 0. Using the equation:
displacement = (initial velocity × time) + (0.5 × acceleration × time²)
We know that Sekazi's initial velocity is 3.0 m/s and the time is 6.0 seconds. Plugging in the values, we get:
displacement = (3.0 × 6.0) + (0.5 × 0 × 6.0²)
displacement = 18.0 + (0 × 36.0)
displacement = 18.0 + 0
displacement = 18.0 meters
To find the total displacement, we add the displacement when Sekazi's father pushes him (4.5 meters) to the displacement when Sekazi continues on his own (18.0 meters):
total displacement = 4.5 + 18.0
total displacement = 22.5 meters
Therefore, Sekazi's displacement is 22.5 meters.
With the proper conclusion, we can state that Sekazi's displacement while learning to ride a bike without training wheels is 22.5 meters.
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Kamini's storeroom has only one electric bulb and she finds a little dark. She wants to fit an extra bulb. Her husband John suggests that he will instead fit more mirrors on the walls of the storeroom.
Will John's idea work?
A Yes, though it will only feel brighter, the room will not actually become brighter.
B Yes, the mirrors will reflect light actually making the room brighter.
C No, without adding a light source, the room cannot be brightened.
D No, due to the reflections of the other objects, the room will become less bright.
Answer:
i think the answer could be B
A catcher stops a 92 mi/hr (41. 1 m/s) pitch in his glove, bringing it to rest in 0. 15m. If the force exerted by the catcher is 803 n, what is the mass of the ball?.
If a catcher stops a 92 mph (41. 1 m/s) pitch in his glove and slows it to rest in 0. 15 m with a force of 803 N, the ball's mass is 0.14 kg.
What is the short form of Newton's second law?According to Newton's Second Law of Motion, when a force acts on a mass, acceleration (or gaining speed) occurs (object). A good illustration of this law of motion in action is when you are riding a bicycle. The mass is represented by your bicycle. The force is generated by your leg muscles as they push against the bicycle pedals.
a = (Vf²- Vi²)/2.d
The distance is 0.15 meters, the initial velocity is 92 miles per hour, or 41 m/s, and the final velocity is 0 (rest).
a= -5603 m/s²
use the second Newton law,
F= m.a
m= F/a
m= 803N/5603 m/s²
m= 0.14kg.
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how do you calculate the numerical value of physical quantity
The value of a physical quantity is normally expressed as an implied product of a numeric value and a unit of measurement.
There are three categories to consider:
There is no explicit unit of measurement included. Examples of this would include index of refraction of a medium and the specific gravity of a substance (which is ratio of the density of the material divided by the density of some reference material, usually water at some specified temperature). In this category, there is an implied measurement unit of 1 . It is usually not written because 1 times any number is that same number, so it is pointless to write the “times 1”. The value of an index of refraction is simply a number, and that number is all you write for the quantity value. That number is the numerical value of the physical quantity. It is only slightly more complicated for specific gravity, because you are dividing one density by another, and both values should be expressed in the same units of measurement, and the division of one by the other cancels out those units, leaving you with 1 as the overall measurement unit.
For plane angles, there is a relationship between the length s of the arc of a circle, the radius r of that circle, and the angle a subtended by the arc at the circle center:
a = s/r
with the angle a being measured in the unit of radians. (To write the formula for some other angular unit requires incorporating a numeric factor, which is basically a conversion factor from radians to degrees,) Thus, if you have a circle of radius 3 m and an arc of 6 m on that circle, the the angle subtended or formed is:
(6 m)/(3 m) = 2, but we said this is the number of radians, so it is 2 rad.
Notice, we are dividing a length by a length (both the arc length and the radius being lengths), so if we use the same measurement unit for both lengths (regardless that unit being meters, feet, parsecs, or anything else), the two units cancel each other out upon division. This means that the unit we are calling radian is like with specific gravity in #1—it has the value 1. Indeed, we see the formula gives us 2 and we know that it is 2 rad, and the only way we can have them be the same, 2 rad = 2, is if the unit radian is actually just a funny, special name for the number 1. Why do we give the number 1 a special name here, unlike in category #1? That is because some inexperienced people find the concept of radian to be strange and inconvenient. They would rather use degrees, or arcminutes, or arcseconds, or semicircles, or some other such unit, and they all have different sizes. For example, a full circle is 2π rad and it is also 360°. Therefore, since both equal one circle of rotation, they must be equal to each other:
360° = 2π rad. Divide both sides by 360 to get:
1° = (2π/360) rad = (π/180) rad. Now, we saw above that rad = 1, so:
1° = (π/180) rad = (π/180) × 1 = π/180.
Thus, like the radian, the degree is also a number—not 1 though, but rather π/180, which cannot be “thrown away” because π/180 times a number does not yield back the original number.
Thus, 30° = 30 × π/180 = π/6 = π/6 × 1 = π/6 rad.
This is the explanation as to when we express an angle in degrees, we must write the ° symbol or spell out degrees, whereas when we express the angle in radians, we may either explicitly write rad or we may leave it off. Unfortunately secondary school geometry textbooks do not seem to understand this point and typically leave off the mandatory ° symbol. That usually gets straightened out when radians are presented—typically later in the second year of algebra or in trigonometry, but it becomes something necessary for students to unlearn the incorrect and learn the correct. Thus, if an angular unit is included, you can convert that angular unit into a real number and multiply by the numeric part of the physical quantity value to the the numeric value of the physical quantity. (And absence of angular unit implies radians, which have numeric value 1, so the numeric value of the quantity is just the numeric value that is present.
Solid angles work similarly, involving area divided by area. The steradian (sr) is the unit that has value 1.
a force that pushes a small mass will have _ effect on the acceleration than that same force pushing on na large mass
A. greater
B. smaller
C. same
Answer:
a
Explanation:an example An astronaut in space has the same mass as he does on earth while having different ... Newton's Second Law of Motion: Force = mass x acceleration ... Push less to move it (use less force.) ... Gravity has an effect on an object in the vertical direction only.
Answer:
it is a greater
Explanation:
hope it helps
Question 15 of 25
Newton's first law deals most closely with:
O A. inertia.
B. action and reaction forces.
O C. acceleration.
D. mass.
Answer:
action and reaction forces.
Explanation:
Newton's first law of motion states that "An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force." Objects tend to "keep on doing what they're doing." In fact, it is the natural tendency of objects to resist changes ...
97.6 97.7 ! Temperature (°F) at 8 AM 98.3 Temperature (°F) at 12 AM 99.1 98.8 99.2 97.1 97.4 97.8 97.2 Listed below are body temperatures from five different subjects measured at 8 AM and again at 12 AM. Find the values of dands. In general, what does Hd represent? Temperature (F) at 8 AM 99.3 98.8 97.6 97.7 97.1 Temperature (°F) at 12 AM 99.1 99.2 97.8 972 97.4 Let the temperature at 8 AM be the first sample, and the temperaturo at 12 AM be the second sample. Find the values of d and is Type an integer or a decimal. Do not round)
The value of the mean of all values of d (Hd) is -0.04.
As per data the following temperatures,
Temperature (°F) at 8 AM 98.3
Temperature (°F) at 12 AM 99.1 98.8 99.2 97.1 97.4 97.8 97.2
Temperature (F) at 8 AM 99.3 98.8 97.6 97.7 97.1
Temperature (°F) at 12 AM 99.1 99.2 97.8 972 97.4
Let the temperature at 8 AM be the first sample, and the temperature at 12 AM be the second sample. Then,
d = x₂ - x₁
Now, we need to find the values of d for all five subjects.
Therefore, d is as follows:
d₁ = 99.3 - 99.1
= 0.2
d₂ = 98.8 - 99.2
= -0.4
d₃ = 97.6 - 97.8
= -0.2
d₄ = 97.7 - 97.2
= 0.5
d₅ = 97.1 - 97.4
= -0.3
In general, Hd represents the mean of all values of d.
Thus, the value of Hd is:
Hd = (0.2 + -0.4 + -0.2 + 0.5 + -0.3) / 5
= -0.04
Thus, the value of Hd is -0.04.
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When a force is applied to an object, no work is being preformed on the object unless the object____.
Important support for general relativity came from studies of the precession of the orbit of?
Important support for general relativity came from studies of the precession of the orbit of Mercury
A route that an object in space follows around another is known as an orbit. A satellite is a thing that orbits the earth. An Earth- or moon-like natural satellite is one possibility. Moons are satellites that orbit many planets. A man-made satellite is also possible, such as the International Space Station.
Albert Einstein created the gravitational theory known as general relativity between 1907 and 1915. According to general relativity theory, the apparent gravitational pull between masses is caused by the bending of spacetime caused by those masses.
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for two objects in space with very different masses, the gravitational force causes:
A.
the two objects to remain stationary.
B.
the less-massive object to orbit the more-massive object.
C.
the more-massive object to orbit the less-massive object.
D.
the two objects to both orbit a central point together.
helpp!! Which of the following statements about the independent variable are correct?
a.The independent variable is mentioned in the hypothesis.
b.Scientists adjust the dependent variable to see its impact in the independent variable.
c.The independent variable is manipulated by the scientist.
d.The independent variable is held constant during an experiment.
e.A hypothesis predicts a relationship between the independent and dependent variable.
The statements about the independent variable that are correct are:
The independent variable is mentioned in the hypothesis.The independent variable is manipulated by the scientist.A hypothesis predicts a relationship between the independent and dependent variables.The correct option are A, C, and E.
What are independent and dependent variables?A variable that is independent is precisely what it sounds like. It is a stand-alone variable that is unaffected by the other variables you are attempting to assess. Age, for instance, could be an independent variable.
The dependent variable is the variable that is being measured in an experiment
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How high would you have to lift a 1000 kg car to give it a potential energy of: a. 2,000 J (b) 200,000 J
Given:
a. 2,000J
b. 200,000 J
Answer:
a. 0.204 m, b. 20.408 m
Explanation:
We know that Potential energy is given by
\(U = mgh\)
Rearranging this, we have:
\(h=U/mg\)
a. 2000 J = 2000 kgm/s²
h = 2000/(1000*10) (Taking g = 10 m/s²)
= 0.2 m
If we took g as 9.8 m/s²,
h = 0.204 m (Marginal error)
b. 200,000 J = 200,000 kgm/s²
h = 200,000/(1000*10) (Taking g = 10 m/s²)
= 20 m
If we took g as 9.8 m/s²,
h = 20.408 m
What does Newton's law all about?
An object with a mass of 10kg in space is pushed by a force of 200N. What is the acceleration of that block? If it starts from rest, how fast will it be moving in 5 seconds?
Answer:
acceleration = force/mass, so 200/10 = 20
(a) What kind of energy is possessed by an aeroplane flying at a height of 10000 m?
Answer:
When the plane is rest position it possess potential energy. But when a aeroplane is flying at the height it possess kinetic energy. No matter what height is given.
electrostatic precipitators use electrical charges to attract and track what pollutants?
Electrostatic precipitators use electrical charges to attract and trap pollutants, such as dust particles, sulfur dioxide, and smoke particles.
This technology works by using high voltage to ionize the pollutant particles, which changes their electrical charge and results in an attractive electrical force that is directed to metal plates or tubes, known as collectors.
Once the particles reach the collector, they build up and can be removed from the air. This technology is usually used to control emissions of particles that are too small to be blocked by traditional mechanical filters, such as those found in large power plants and fossil fuel facilities.
Because electrostatic precipitators are so efficient and powerful, they are now frequently used in many industries where air pollution control is needed. With proper maintenance and upkeep, this technology can be very effective in reducing air pollution, and keeping the surrounding air clean.
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How is the amount of oxygen in ocean water affected by temperature?
Answer:
The amount of oxygen in ocean water increases as temperature increases. Sunlight penetrates the top layers of the ocean, so photosynthesis occurs there. Nutrients, minerals, and gases are more available to marine life in the bottom layers of the ocean.
Explanation:
Newton's 3rd Law of Motion
For every__________ (or force), there is an ____________ and __________ action (or force).
Answer:
Explanation:
For every action (or force), there is an equal and opposite action (or force).
A soda can rolls off a table top and lands 0. 225 m away 0. 416 s later. How tall was the table
According to the given statement ,we can use the equations of motion and the concept of free fall. Therefore, the height of the table is approximately 0.085 meters.
To determine the height of the table, we can use the equations of motion and the concept of free fall.
First, let's identify the known values:
- The distance the soda can rolled horizontally, 0.225 m.
- The time it took for the soda can to land, 0.416 s.
- The acceleration due to gravity, which is approximately 9.8 m/s².
Since the can was rolling horizontally, we can ignore any initial vertical velocity and consider only the vertical motion of the can.
Using the equation of motion for vertical displacement:
s = ut + (1/2)at²
Where:
- s is the vertical displacement
- u is the initial vertical velocity (which is zero in this case)
- t is the time
- a is the acceleration due to gravity
In this case, we want to find the height of the table, which is the vertical displacement. So we can rearrange the equation to solve for s:
s = (1/2)at²
Plugging in the values:
s = (1/2) * 9.8 m/s² * (0.416 s)²
Simplifying:
s = (1/2) * 9.8 m/s² * 0.173056 s²
s = 0.085 m
Therefore, the height of the table is approximately 0.085 meters.
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Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. You have determined that the football would travel 15.1 m before landing.
How would this value change if the football was kicked at an angle of 35.0°?Complete all equations without rounding and then round to the nearest tenth at the end.
From edge
Answer:
like 23 or something
Explanation:
Una niña tira de un carrito por medio de una soga. Si realiza una fuerza de 10 N qué forma un ángulo de 30° con la dirección de desplazamiento. ¿Qué trabajo hace al desplazar 300cm?
Answer:
El trabajo realizado por la niña es 25.9 J.
Explanation:
El trabajo ue hace la niña viene dado por:
\( W = |F|*|d|*cos(\theta) \)
En donde:
F: es la fuerza realizada = 10 N
d: es el desplazamiento = 300 cm
θ: es el ángulo entre la fuerza y el desplazamiento = 30°
Entonces, el trabajo es:
\( W = |F|*|d|*cos(\theta) = 10 N*3 m*cos(30) = 25.9 J \)
Por lo tanto, el trabajo realizado por la niña es 25.9 J.
Espero que te sea de utilidad!
If a fish is trying to capture an insect hovering above the surface of the water – how will it jump to catch it? Will it aim above or below what it sees? Explain what this question is saying.
Answer:
It will have aim at a point "below" the insect.
From the insect's point of view, the fish will appear to be shallower than it actually is because a ray of light from the insect to the fish will be bent "towards" the normal when the ray enters the water
does a 1.5 v battery have an internal resistance? if the maximum current the battery can supply is 200 ma, what is the value of its internal resistance?
Yes, a 1.5 V battery does have an internal resistance. The value of the internal resistance of the 1.5 V battery is approximately 7.5 ohms.
The internal resistance represents the resistance to the flow of current within the battery itself. When a load is connected to the battery, the internal resistance causes a voltage drop within the battery, reducing the effective voltage delivered to the load.
KBTo calculate the value of the internal resistance of the battery, we can use Ohm's Law. Ohm's Law states that the voltage drop across a resistor is equal to the current passing through it multiplied by its resistance.
Given that the maximum current the battery can supply is 200 mA (0.2 A), and the voltage drop across the battery (internal voltage) is 1.5 V, we can rearrange Ohm's Law to calculate the internal resistance:
Internal resistance = Voltage drop / Current
Internal resistance = 1.5 V / 0.2 A
Internal resistance = 7.5 ohms
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