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2 years ago

15

An audience of 2250 fills a concert hall of volume 32000 m^3. If there were no ventilation, by how much would the temperature of

the air rise over a period of 2.0 h due to the metabolism of the people (70 W/person)?

1 answer:

Nonamiya [84]2 years ago

7 0

246 and 64 minutes later

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You are on a train traveling east at speed of 18 m/s with respect to the ground. 1) If you walk east toward the front of the tra

dlinn [17]

Answer:

19.2 m/s

Explanation:

The train is moving at 18 m/s and you are walking in the same direction (east) so the speeds are added

18 + 1.2 = 19.2

If you were walking backwards (west) your velocity with respect to the ground would be

18 - 1.2 = 16.8

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3 years ago

3. An explosion of gas from a Hawaiian volcano blows a bunch of rocks into the sky. Each has 2000J of

anzhelika [568]

Answer: 3.906kg

Explanation:

K.E = 2000J

V = 32m/s

m =?

K.E = 1/2MV2

2000 = 1/2M x (32^2)

2000 = 1/2M x 1024

2000 = 512M

M = 2000/512

M = 3.906kg

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2 years ago

Explain relative velocity briefly

fomenos

Answer:

Explanation:

Relative velocity is defined as the velocity of an object B in the rest frame of another object A.

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3 years ago

2 What are the products of the following general reaction? acid + base _______ + _______ A. salt; water B. oxygen; hydrogen C. w

Llana [10]

Salt + water because salt dissolved in water

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2 years ago

As a ship comes into view over the horizon the top appears before the rest of the ship how does this demonstrate the earth is sp

valina [46]

Since its a sphere, the top is seen first because its the tallest part if the ship. If the earth was flat, the whole ship would be seen.

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3 years ago