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3 years ago

If a laptop of mass 1.4 kg is lifted to a table of height 0.8 m, how much gravitational potential energy is added to the laptop?

2 answers:

4 0

Potential Energy = mgh ,

mass = 1.4 kg, g ≈ 10 m/s², h = 0.8m

Potential Energy = mgh = 1.4 * 10 * 0.8 = 11.2 N

Potential Energy added = 11.2 N

Aleks [24]3 years ago

3 0

To calculate Potential Energy you need to Multiply 1.4*.8*9.8.... 9.8 is the acceleration due to gravity an they expect you to know to add 9.8 when you calculate Potential Energy. So the correct answer is 10.976 but rounded up is 11.

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Answer:

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4 years ago

A child holds one end of a 33.0-meter long rope in her hand and moves it up-and-down to produce a sinusoidal wave by moving her

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Answer:

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Explanation:

The formula which will help us to answer the question is:

V=f*λ

Where:

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3 years ago

A positive point charge (q = +8.65 x 10-8 C) is surrounded by an equipotential surface A, which has a radius of rA = 2.97 m. A p

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Answer:

$r_B = 1.88 m$

Explanation:

As we know that work done by electric force is given as

$W_e = -q\Delta V$

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so we will have

$W_{AB} = \frac{kq_1q_2}{r_A} - \frac{kq_1q_2}{r_B}$

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4 years ago

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When it’s about to be dropped

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