Identify the frequency of vibrations
The springs of a 1000 kg car compress 6.5 mm when its 68 kg driver gets into the driver's seat. If the car goes over a bump, what will be the frequency of vibrations?
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A sealed evacuated container made of a perfect insulating material at 22^circ C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.
Consider the reaction, 2 Al(OH)3 + 3 H2SO4 Al2(SO4)3 + 6 H2O. How many grams of Al2(SO4)3 are generated when 152 g of H2SO4 reacts?
A rope having a total mass of 0.4 kg and total length of 4 m has a 0.6 m of the rope hanging vertically down off a work bench. How much work must be done to place all the rope on the bench?
The vinegar sold in the grovery stores is described as 5% v/v acetic acid. What is the mole fraction of acetic acid in this solution?
Methane reacts with oxygen to form carbon dioxide and water as shown: CH4 + 2O2 = CO2 +2H2O. If 72 grams of water is formed, how much methane must have reacted?
What is the rate of energy transfer by radiation from a metal cube 2.1 on a side that is at 750? Its emissivity is 0.40.
A parachutist with a camera, both descending at a speed of 11 m/s, releases that camera at an altitude of 140 m. What is the velocity of the camera just before it hits the ground?
The magnitude of F is 306 newtons and it points at 93o measured counterclockwise from the positive x-axis. What is the y component (in newtons) of F?
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