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Elden [556K]
3 years ago
8

A solid uniform ball of mass 1.0 kg and radius 1.0 cm starts from rest and rolls down a 1.0-m high ramp. there is enough frictio

n on the ramp to prevent the ball from slipping as it rolls down. A). What is the forward speed of the ball when it reaches the bottom of the ramp?
B). What would be the forward speed of the ball if there were no friction on the ramp?
C). Since the ball starts from the Same Height in both cases, why is the speed different?
Physics
1 answer:
Luba_88 [7]3 years ago
4 0
The correct answer is A
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Given the frequency of an electromagnetic wave, what else can you find immediately?
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Answer:

wavelength

Explanation:

An electromagnetic waves is produced due to interaction of oscillating electric and magnetic field when they interacts perpendicular to each other. For example, Gamma rays, X rays , ultraviolet rays, visible radiations, infrared rays, micro waves, radio waves.

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If the frequency of electromagnetic wave is unknown then we find the wavelength of wave. the formula used is

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Answer:

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Explanation:

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For maximum condition

\dfrac{dE}{dx}=0

K{Q}{(r^2+x^2)^{-3/2}}-\dfrac{3}{2}\times 2\times x\times K{Q}{(r^2+x^2)^{-5/2}}=0

r^2+x^2-3x^2=0

x=\dfrac{r}{\sqrt2}

At x=\dfrac{r}{\sqrt2} the electric field will be maximum.

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