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3 years ago

If an object travels at a constant speed in a circular path, the acceleration of the object is

2 answers:

6 0

There are two types of acceleration produced in a body if it moves in circular path !

first is ; tangential acceleration = dv/dt

and second is : radial acceleration = v^2/r

IRINA_888 [86]3 years ago

4 0

The acceleration of the object would be that : 1- larger in magnitude the smaller the radius of the circle. 2- smaller in magnitude the smaller the radius of the circle. 3- in the same direction as the velocity of the object.

Hope this helps!

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A person jumps forward off the front of a stationary boat floating on a lake. Identify the reaction force in this case, between

Mamont248 [21]

The boat applying a force on the person pushing her forward.

Hope this helps!

3 0

3 years ago

A crate is dragged up a ramp at constant speed. The work done on the system can be accounted for by:

Alex

Answer:

The work done on the system can be accounted for by;

Both $E_g$ and $E_{int}$

Explanation:

The speed of the crate = Constant

Therefore, the acceleration of the crate = 0 m/s²

The net force applied to the crate, $F_{NET}$ = 0

Therefore, the force of with which the crate is pulled = The force resisting the upward motion of the crate

However, we have;

The force resisting the upward motion of the crate = The weight of the crate + The frictional resistance of the ramp due to the surface contact between the ramp and the crate

The work done on the system = The energy to balance the resisting force = The weight of the crate × The height the crate is raised + The heat generated as internal energy to the system

The weight of the crate × The height the crate is raised = Gravitational Potential Energy = $E_g$

The heat generated as internal energy to the system = $E_{int}$

Therefore;

The work done on the system = $E_g$ + $E_{int}$ .

6 0

3 years ago

Your friend says their laptop speakers

Lilit [14]

The sound comes from the speakers which produce sound waves which is the music, the volume could be changed producing a louder sound or a quieter sound which means that the speakers could produce more sound waves or less sound ways ( depends on the volume )

5 0

3 years ago

Can someone help me

Nady [450]

The answer is D 10x21

7 0

3 years ago

If Earth's mass was cut in half, what would happen to your mass? Group of answer choices

Alex777 [14]

Answer:

nothing, mass is not affected by gravitational force

Explanation:

Weight is the gravitational force a planet exerts on a mass on the surface.

It is the product of the mass of an object with the gravitational acceleration that the planet produces.

The weight is the gravitational force

$W=mg$

where,

m = Mass of the object

g = Acceleration due to gravity = 9.81 m/s²

Mass is the property that matter has which opposes the force being applied to it. It is intrinsic to the object itself and does not change according to the gravitational force. But, the weight changes.

5 0

4 years ago