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Bogdan [553]
4 years ago
6

I tried to solve for it 3 times but I still got it wrong. HELP?!?!

Physics
1 answer:
QveST [7]4 years ago
3 0
The answer is = 793.00m
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A crane lifts a load of bricks of weight 20 000 N to a height of 10.0 m. Calculate the work done or energy transferred by the cr
Oxana [17]

Explanation:

here we have mass(m);20 000N in kg will be 9.8kg

acceleration due to gravity (g): 10m/s

height (h) : 10m

so work done will be,

W=mgh

9.8x10x10

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A ball is dropped from a cliff and has an acceleration of 9.8 m/s^2 how long will it take the ball to reach a speed of 24.5 m/s
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The color of a star is primarily determined by its _____. composition size apparent brightness age surface temperature
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a/ Compute the quantity of heat released by 25.0 g of steam initially at 100.0oC, when it is cooled to 34.0°C and by 25.0 g of w
Svetach [21]

Answer:

When put into steam

Explanation:

When a certain amount of steam at boiling temperature condenses (turning into water), the amount of heat released is

Q_1 = m\lambda_v

where in this case

m = 25.0 g = 0.025 kg is the mass of steam at 100.0°C

\lambda_v=2.256\cdot 10^6 J/kg is the latent heat of vaporization of water

So,

Q_1=(0.025)(2.256\cdot 10^6)=56400 J

Instead, the amount of heat released when the water at 100.0°C is cooled down to 34.0°C is given by

Q_2=mC\Delta T

where

m = 25.0 g = 0.025 kg is the mass of water

C=4.19\cdot 10^4 J/kg K is the specific heat of water

\Delta T=100-34=66^{\circ}C is the change in temperature

Therefore,

Q_2=(0.025)(4.19\cdot 10^3)(66)=6913 J

Since Q_1>Q_2, we can say that your hand will burn more in the first case.

5 0
3 years ago
Pls can anyone solve this​
gayaneshka [121]

Answer:

3 pls give me brainliest

Explanation:

8 0
3 years ago
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