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2 years ago

Can you solve a simple physics problem

Physics

1 answer:

mart [117]2 years ago

6 0

Answer:

0.41

Explanation:

A 49 N block has a mass of 5 kg:

49/9.8

A horizontal force of 50 N giving it an acceleration of 6 m/s^2 means that 30 N is taken up by the acceleration

This leaves 20 N to take care for friction. so the coefficient of friction is:

20/49 = 0.41.

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A series of optical telescopes produced an image that has a resolution of about 0.00350 arc second.

Mila [183]

Answer:

The smallest diameter is $D =122 \ m$

Explanation:

From the question we are told that

The resolution of the telescope is $\theta = 0.00350 \ arc \ second$

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From the question we are told that

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=> $\theta = (9.722*10^{-7}) * \frac{\pi}{180}$

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The smallest diameter is mathematically represented as

$D = \frac{1.22 \lambda }{\theta }$

substituting values

$D = \frac{1.22 * 1.7 *10^{-6}} {1.69 *10^{-8} }$

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3 years ago

An acorn with a mass of .0300 kg is hanging from a branch in a tree it is 2.50 M off the ground what is the potential energy of

Alekssandra [29.7K]

According to another source this is what I got
<span>0.735 J ( Ep-potential energy, m-mass,g-gravitational acceleration = 9.81m/s², h-height; Ep = m * g * h; Ep = 0.0300 kg * 9.81 m/s² * 2.5 m )
</span>Hope it helps

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2 years ago

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