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topjm [15]
3 years ago
7

How much dirt is there in a hole 3 feet deep, 6 ft long and 4 ft wide?

Physics
1 answer:
katrin [286]3 years ago
5 0
V = l x w x h
v = 3 x 6 x 4
v = 72
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How is it possible for the same object to have different amounts of gravitational potential energy?
Arlecino [84]

Answer:

In Newtonian mechanics, the gravitational energy possessed by a mass, because of the gravitational field produced by a second mass.

Explanation:

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A motorcycle travels 90.0 km/h. How many seconds will it take the motorcycle to cover 2.10 x 103 m?
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You wish to cook some pasta and so take some water and heat it on a stove. If you use 2000 grams of water with an initial temper
Ronch [10]

Answer:

the stove energy went into heating water is 837.2 kJ.

Explanation:

given,

mass of water = 2000 grams

initial temperature = 0° C

Final temperature = 100° C

specific heat of water (c) = 4.186 joule/gram

energy = m c Δ T                            

            = 2000 × 4.186 × (100° - 0°)

            = 837200 J                          

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hence, the stove energy went into heating water is 837.2 kJ.

3 0
3 years ago
How do I solve for the maximum speed and height given those accelerations? (please give the formula so I can solve these types o
Sphinxa [80]
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5 0
3 years ago
A coin of mass m rests on a turntable a distance r from the axis of rotation. The turntable rotates with a frequency of f. What
Crank

Answer:

\mu = \frac{r (2\pi f)^{2}}{g}

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N = normal force acting on the coin

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Angular velocity of turntable is hence given as

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static frictional force is given as

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The  static frictional force provides the necessary centripetal force , hence

Centripetal force = Static frictional force

m r w^{2} = \mu mg\\r w^{2} = \mu g\\\\\mu = \frac{r w^{2}}{g} \\\mu = \frac{r (2\pi f)^{2}}{g}

3 0
3 years ago
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