3 years ago

What is the term for movement in a particular direction

1 answer:

4 0

Hello User,

The specific term used is velocity. Velocity is the speed of an object in a specific direction.

"Live as if you were to die tomorrow. Learn as if you were to live forever." -Mahatma Gandhi

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A 70-kg boy is sitting 3 m from the ground in a tree. What is his gravitational potential energy

steposvetlana [31]

m x h x 9.8 m/s squared

70 kg x 3 m x 9.8 m/s squared= 2058 Joules

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3 years ago

Which statement best describes the isothermal process? A. the temperature remains constant B. the temperature increases at a con

Veronika [31]

Answer:

The answer would be A. - the temperature remains constant

Explanation:

An isothermal process is a change of a system, in which the temperature remains constant: ΔT = 0

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A rocky space object of varying size

kow [346]

That would be an asteroid

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A certain type of laser emits light that has a frequency of 4.2 × 1014 Hz. The light, however, occurs as a series of short pulse

bogdanovich [222]

Explanation:

It is given that,

Frequency of the laser light, $f=4.2\times 10^{14}\ Hz$

Time, $t=3.2\times 10^{-11}\ s$

(a) Let $\lambda$ is the wavelength of this light. It can be calculated as :

$\lambda=\dfrac{c}{f}$

$\lambda=\dfrac{3\times 10^8}{4.2\times 10^{14}}$

$\lambda=7.14\times 10^{-7}\ m$

$\lambda=714\ nm$

(b) Let n is the number of the wavelengths in one pulse. It can be calculated as :

$n=f\times t$

$n=4.2\times 10^{14}\times 3.2\times 10^{-11}$

n = 13440

Hence, this is the required solution.

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2 years ago

Why are renewable sources of energy better than nonrenewable sources?

Anton [14]

Because it does not produce waste, thus it doesn't harm the environment. also renewable sources are infinite.

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3 years ago

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