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snow_lady [41]
3 years ago
5

4) Kinetic energy is directly related to _______

Physics
1 answer:
TEA [102]3 years ago
6 0

Answer:

4) C.mass

5) C. Potential Energy

Explanation:

4) Kinetic energy (KE) of an object is the energy that it possesses due to its motion. If a mass is in motion ,it has a kinetic energy .

By definition

Kinetic.Energy=\frac{1}{2}*mass*velocity^{2}

what matters in Kinetic energy is the mass and the velocity only .

there fore the answer is

C.mass

5) Potential energy is the energy stored in an object, due to the object's position or arrangement.

By definition

Potential.Energy=mass*gravitaional.Acceleration*height

in potential energy the height matters.higher the height , higher the energy

therefore the answer is

C.Potential Energy

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When the starter motor on a car is engaged, there is a 290 A current in the wires between the battery and the motor. Suppose the
Tema [17]

Answer:

33.6\times10^{-4}}\text{ m} = 3.36 mm

Explanation:

From Ohm's law,

V = IR (Voltage = Current * Resistance)

R = \dfrac{V}{I}

The geometric definition of resistance is

R = \rho\dfrac{l}{A}

where \rho is the resistivity of the material, l  and A are the length and cross-sectional area, respectively.

A = \rho\dfrac{l}{R}

A = \rho\dfrac{l\timesI}{V}

Since the wire is assumed to have a circular cross-section, its area is given by

A = \pi\dfrac{d^2}{4} where d is the diameter.

\pi\dfrac{d^2}{4} = \rho\dfrac{l\timesI}{V}

d = \sqrt{\dfrac{4\rho l I}{\pi\times V}}

Resistivity of copper = 1.68\times10^{-8}. With these and other given values,

d = \sqrt{\dfrac{4\times1.68\times10^{-8}\times1.5\times290}{3.14\times 0.55}}

d = \sqrt{1128.43\times10^{-8}}

d = 33.6\times10^{-4} \text{ m}

5 0
3 years ago
Which kind of star is most likely to spend the longest time on the main sequence?
s2008m [1.1K]
A, a low-mass red star
6 0
3 years ago
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Why would north america will not be able to view the eclipse
Flauer [41]

The North America will not be able to view the eclipse because of its location on the earth caused by the tilting of the earth.

<h3>Effect of tilting of the Earth</h3>

The tilt of the Earth is what causes seasons to occur. These are the seasons in relation to the Northern Hemisphere.

The tilting of the Earth causes the difference in the amount of sun reaching each region of the earth like in the North America continent.

Thus, the North America will not be able to view the eclipse because of its location on the earth caused by the tilting of the earth.

Learn more about eclipse here: brainly.com/question/8643

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4 0
1 year ago
During a workout, the football players at State U ran up the stadium stairs in 61 s. The stairs are 130 m long and inclined at a
NeTakaya

Answer:

  P = 1097 Watt

Explanation:

given,

length of stairs, L = 130 m

inclination with horizontal,θ = 30°

mass of the football player = 105 Kg

time = 61 s

we know,

Power = \dfrac{work}{time}

Work = change in Potential energy

 h = L sin 30°

 h = 130 x 0.5

 h = 65 m

W = m g h

W = 105 x 9.8 x 65

W = 66885 J

now,

P = \dfrac{66885}{61}

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hence, the power output on the way is 1097 W

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3 years ago
What is the efficient functioning of working memory increased by
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Is limited in scope and was discovered during a study of epilepsy

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