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3 years ago

7

one of the lady spartans was falling to the ground after dunking the winning basket. At the end of her fall, she was falling 4 m

/s. If she was 60kg, how much potential energy did she have at the top of her jump?

1 answer:

Tresset [83]3 years ago

8 0

Answer:

15 is the correct answer I.t.

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How much force is needed to accelerate a 2500 kg car at a rate of 3.5 m/s^2?

Sati [7]

F = ma

F = applied force in newtons = to be determined

m = mass of the car = 2,500 kg

a = acceleration of the car = 3.5 m/s²

F = (2,500 kg)(3.5 m/s²)

F =8750

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4 years ago

A machinist with normal vision has a near point at 25 cm. The machinist wears eyeglasses in order to do close work. The power of

Alik [6]

Answer:

17.4 cm

Explanation:

Power of lens = +1.75 diopters

Focal length of lens

$f=\frac{100}{1.75}=\frac{400}{7}$

This is a convex lens as focal the diopter given is positive which makes the focal length positive. Image distance will be negative.

v = -25

$\frac{1}{v}-\frac{1}{u}=\frac{1}{f}\\\Rightarrow \frac{1}{-25}-\frac{1}{u}=\frac{1}{\frac{400}{7}}\\\Rightarrow -\frac{1}{u}=\frac{7}{400}+\frac{1}{25}\\\Rightarrow \frac{1}{u}=-\frac{7}{400}-\frac{1}{25}\\\Rightarrow \frac{1}{u}=-0.0575\\\Rightarrow u=-17.4\ cm$

∴ The new near point is 17.4 cm

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3 years ago

Write<br>any<br>to increase<br>magnitude of current in dynamo

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Answer:

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Hope this helps

plz mark it as brainliest!!!!!!

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3 years ago

What is the metric unit for time?

spin [16.1K]

The base unit of time in the metric and SI system is the second.

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What is the lateral surface area of a cylinder with height of 7 m and a base diameter of 4 m (to the nearest whole number)?

yuradex [85]

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3 years ago