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2 years ago

An entertainer pulls a table cloth off a table leaving behind the plates and sliverware undisturbed is an example of

Physics

1 answer:

umka2103 [35]2 years ago

5 0

Answer:

D. Newton's first law

Explanation:

Newton's first law of inertia says that an object will remain how it is, unless affected by an outside force. In this case, the plates want to remain stationary(not moving). Therefore, if you pull the table cloth fast enough, the force of friction produced will be small enough so that the Inertia of the plates will overcome the force of friction.

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dsp73

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thus, if we triple the net force applied to the object:
3F = maa = 3F / m
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3 years ago

A 1.5 kg ball is dropped from a height of 2.Gm. Assuming energy is

Vikki [24]

Answer:

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2 years ago

When the number of electrons striking the anode of an x-ray tube is increased, the ____ of the emitted X-Ray increases.

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2 years ago

What is speed of light in crown glass?

german

Answer:

1.97 x 10^8 m/s

Explanation:

refractive index of crown glass with respect to air, n = 1.52

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Let v be the speed of light in crown glass.

By use of the definition of refractive index

$n = \frac{c}{v}$

where, n be the refractive index of crown glass, c be the speed of light in vacuum and v be the speed of light in crown glass

$1.52 = \frac{3 \times 10^{8}}{v}$

$v = \frac{3 \times 10^{8}}{1.52}$

v = 1.97 x 10^8 m/s

Thus, the speed of light in crown glass is 1.97 x 10^8 m/s.

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2 years ago

Describe the relationship between a moving object's mass and its kinetic energy.

Paladinen [302]

Answer:

$E=\dfrac{1}{2}mv^2$

Explanation:

If m is the mass of the object and v is the velocity of the object. The kinetic energy is due to the motion of an object. It is given by the relation as follows :

$E=\dfrac{1}{2}mv^2$

The above formula is used to find the kinetic energy of an object.

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3 years ago