1. Which of the following arrangements of three masses (hanging off the horizont

Question

1.     Which of the following arrangements of three masses (hanging off the horizontal rod) would result in a balanced mobile?

Mass 1                          Mass 2              Mass 3

2. The diagram shows three positions of a mass as it bounces on a spring. The spring is attached to a ceiling. What is true at point C, the lowest point of the oscillation?

I.              Speed = 0 m/s

II.            Acceleration = 0 m/s

Which of the following arrangements of three masses (hanging off the horizontal rod) would result in a balanced mobile? The diagram shows three positions of a mass as it bounces on a spring. The spring is attached to a ceiling. What is true at point C, the lowest point of the oscillation? An ideal gas is held in a rigid container whose volume is 0.25 m³. It is heated from 100ºC, where it is at a pressure of 2 x 105 Pa, to a final temperature of 250ºC. What is the change in pressure of the gas? A piece of solid lead weighing 6.5 kg at 327ºC (its melting point) receives 150,000 joules of heat. In what state is the lead after this occurs? The latent heat of fusion for lead is 23,200 J/kg.

Explanation / Answer

1) 3.

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