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saveliy_v [14]
3 years ago
7

3. Work and Conservation of Energy:Calculate the height of a building if 20,000 J energy is required to 200 kg of water from a w

ellto a tank on the top of the building.of lift

Physics
1 answer:
Maru [420]3 years ago
5 0
Work = mgh,        where m = mass, g = acceleration due to gravity, h = height

Let g ≈ 10 m/s²,   mass = 200 kg

2000 J = 200 * 10 * h

200 * 10 * h = 2000

h = 2000/(200* 10)

h = 1

The height of the building is 1 m.
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tensa zangetsu [6.8K]

Answer:

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ΔL = (10 N. m) × (70 × 10⁻³s) = 700 × 10⁻³ kg.m²/s = 0.7 kg.m²/s

2. The rotational inertia I relates the angular momentum L to the angular velocity w

L = Iw

w = L/I

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I = 1.2 × 10⁻³ kg.m²

w = (0.7 kg.m²/s)/(1.2 × 10⁻³ kg.m²) = 583.3 rad/s

4 0
3 years ago
A student moves a box across the floor by exerting 56.7 N of force and doing 195 J of
Paha777 [63]

Answer:

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8 0
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What does it mean to say that a wave is a cyclic, or periodic, disturbance
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3 years ago
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babunello [35]

Answer:

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