1. A boat carrying a load of bricks is floating in a canal lock. One of the crew members throws a brick overboard, and it sinks. Does the level of the water in the lock rise or fall? Explain your answer.
2. You are standing in your driveway. You measure the pressure inside a bicycle tire with your tire gauge and get a reading of 60 psi. You then don your space suit, take the tire into outer space and repeat the measurement, this time getting a reading of 75 psi. Air was neither added to nor removed from the tire, and its temperature did not change. What explains this discrepancy?
Please explain!!! :) I'm having a lot of trouble with concept questions. Thank you!
2. You are standing in your driveway. You measure the pressure inside a bicycle tire with your tire gauge and get a reading of 60 psi. You then don your space suit, take the tire into outer space and repeat the measurement, this time getting a reading of 75 psi. Air was neither added to nor removed from the tire, and its temperature did not change. What explains this discrepancy?
Please explain!!! :) I'm having a lot of trouble with concept questions. Thank you!
-
1. density of water is less than that of brick. While on boat, amount of water(whose volume is greater than that of the brick) whose weight equals that of the brick is displaced due to the brick. But, after the brick is thrown, only water of volume equal to that of the brick is displaced due to the brick. So, the level will fall.
2.On earth, atmospheric pressure of approx. 15 psi acts on the guage. So, the reading gets reduced while measuring on earth.
2.On earth, atmospheric pressure of approx. 15 psi acts on the guage. So, the reading gets reduced while measuring on earth.