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inna [77]
3 years ago
5

The equatorial diameter of earth is 7928 miles. If a mile equals 1.609 km, what is the earth's diameter in kilometers? in centim

eter?
Physics
1 answer:
tangare [24]3 years ago
7 0

diameter of earth in miles= 7928 miles

1 mile = 1.609 km

diameter of earth in km= 7928*1.609

                                         =12,756.152 km

Hope it helped u, pls thank if u find this helpful

and don't forget to put this answer as the brainliest.

^_^.

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A soccer ball of mass 0.35 kg is rolling with velocity 0, 0, 1.8 m/s, when you kick it. Your kick delivers an impulse of magnitu
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Answer:

position 9.58 m

Explanation:

In impulse exercises and amount of movement, we always assume that the contact time is small,

     I = Δp

With this expression we can calculate the final speed

     I = m Vf - m Vo

    Vf = (I + mVo) / m

    Vf = (1.8 + 0.35 1.8) /0.35

    Vf = 6.94 m / s

To calculate the acceleration of the ball we use Newton's second law, after finishing the impulse

     ∑ F = m a

     fr = m a

     a = fr / m

     a = -0.26 / 0.35

     a = -0.74 m/s²

A negative sign indicates that this acceleration is slowing the ball

Now we have speed and time acceleration, so we can use the kinematic equations to find the position at 1.5 s

   

      X = Vo t + ½ to t²

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7 0
3 years ago
Two round rods, one steel andthe other copper, are joined end to end. Each rod is 0.750 mlong and 1.50 cmin diameter. The combin
nikitadnepr [17]

Answer: a) Strain on Steel rod = 0.0001078

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c) strain on Copper Rod = 0.000189

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(Stress, σ) ∝ (Strain, ε)

The constant of proportionality is called Young's modulus, E.

σ = Eε

For steel, Younger Modulus as obtained from literature = 210GPa.

Strain = Stress/Young's Modulus

Stress = (Force or Load applied)/ Cross sectional Area.

Force applied For the steel = 4000N

Cross sectional Area = (π(D^2))/4

D = 1.50cm = 0.015m

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3 years ago
Complete this sentence. If the mass of an object blank, the weight of an object will blank
Archy [21]

If the mass of an object doubles, the weight of the object also doubles

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The mass and the weight of an object are related by the following equation:

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We see from the formula that the weight of an object is directly proportional to its mass. This means the following:

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Learn more about forces and weight:

brainly.com/question/8459017

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