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Ira Lisetskai [31]

2 years ago

6

A diver swims in a pool that is 30 m deep. the diver swims 20 m above the bottom. if the diver descends to 10 m above the bottom

, what is the absolute pressure?

1 answer:

Oksana_A [137]2 years ago

5 0

30-20= 40 thus, 27 degrees

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A runner runs around the track consisting of two parallel lines 96 m long connected at the ends by two semi circles with a radiu

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An enemy spaceship is moving toward your starfighter with a speed of 0.400 c , as measured in your reference frame. The enemy sh

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3 years ago

What is the mass of a sample of water that takes 2000 kJ of energy to boil into steam at 373 K? The latent heat of vaporization

GREYUIT [131]

Answer : The mass of a sample of water is, 888.89 grams

Explanation :

Latent heat of vaporization : It is defined as the amount of heat energy released or absorbed when the liquid converted to vapor at atmospheric pressure at its boiling point.

Formula used :

$q=L\times m$

where,

q = heat = 2000 kJ = $2\times 10^6J$ (1 kJ = 1000 J)

L = latent heat of vaporization of water = $2.25\times 10^6J/kg$

m = mass of sample of water = ?

Now put all the given values in the above formula, we get:

$2\times 10^6J=(2.25\times 10^6J/kg)\times m$

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3 0

3 years ago

A person is making homemade ice cream. She exerts a force of magnitude 28 N on the free end of the crank handle on the ice-cream

Alecsey [184]

Answer:

$P = 43.2 Watt$

Explanation:

As we know that the handle is moving with uniform speed

so we can find the speed as

$v = \frac{2\pi R}{T}$

now we have

$R = 0.27 m$

T = 1.1s

now we have

$v = \frac{2\pi (0.27)}{1.1}$

$v = 1.54 m/s$

now we know that power is given as

$P = F.v$

F = 28 N

$P = 28(1.54)$

$P = 43.2 Watt$

8 0

2 years ago