An apple weighs at 1N. the net force on the apple when it is in free fall is?a. 0N
b. 0.1N
c. 1N
d. 10N
e. none of the above

Answers

Answer 1

Answer:
The weight is the magnitude of the gravitational force between
the Earth and the apple. There's no reason for the force to change
just because the apple happens to be in motion. If it weighs 1N on
the scale, then it weighs 1N while it's sailing over the fence, 1N on
the teacher's desk, and 1N while it's falling from the tree.

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when the lowest frequency above the fundamental is played, at what height will the particles' displacement be out of phase and have the same amplitude as that of the particles 8.0cm above the surface of the water? give your answer as a distance above the surface of the water.

Answers

Answer:

theg watte wil shajka

Explanation:

bshswu

A force is applied to a block, causing it to accelerate along a horizontal, frictionless surface. The kinetic energy gained by the block is equal to which of the following

Answers

Answer:

The work done to the block

See

Workdone is Force×Displacement .

Also work done is total mechanical energy of body

As potential energy is 0

Mechanical energy=Kinetic energy

So option C is correct

How would you change the distance between two positively charged particles if the distance is increased by a factor of 2?a. it is decreased by a factor of 2
b. it is increased by a factor of 2
c. it is increased by a factor of 4
d. it is decreased by a factor of 4

Answers

Answer:

D, it would decrease by a factor of 4

Explanation:

We know the force between two charged particles, also known as Coulombs law.

$F = (kq_(1)q_(2))/(r^2)$

We are only changing the distance, not the charges, so we can ignore both q and look at r, which is the distance between the two positively charged particles.

So let F be our initial condition:

$F \alpha (1)/(r^2) \nF' \alpha (1)/((2*r)^2) = (1)/(4*r^2)\nF' = (1)/(4) *F$

So the answer is D, it decreases by a factor of 4.

Which would best reduce the amount of energy needed to pull a wagon up a ramp?1.Increasing the slope of the ramp
2.Reducing the friction between the wagon wheels
3.Reducing the length of the wagon handle
4.Increasing the friction between the wagon wheels

Answers

Answer:

2.Reducing the friction between the wagon wheels

Explanation:

If the friction between the wagon wheels and the rail is reduced, then less force will be needed to pull the wagon up. This is because the friction force goes in the opposite direction of the movement, that is, friction force opposes the desired movement, making it more difficult.

2. reducing the friction between wagon weels

Think about multiplying each speed by a factor to calculate kinetic energy at that speed.Is there a common factor that works for every speed? If so, what’s this factor?

Answers

Answer:

To calculate kinetic energy, you use the formula KE = 0.5 * m * v^2, where "m" is the mass and "v" is the speed. There isn't a common factor that works for every speed; the factor you use is 0.5. This formula is derived from the principles of classical mechanics and doesn't change with speed; it's a fundamental equation for calculating kinetic energy.

True or False.. Although the Kinetic Theory of Matter states that the particles that make up all matter are in perpetual motion, we know that this isn’t really correct because solids don’t move.