What is the hang time based problem
The punter on a football team tries to kick a football so that it stays in the air for a long "hang time." If the ball is kicked with an initial velocity of 25.0 m/s at an angle of 61.0° above the ground, what is the "hang time"?
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A 9.780 g. gaseous mixture contains ethane (C2H6) and propane (C3H8). Complete combustion to form carbon dioxide and water requires 1.120 mol of oxygen. Calculate the mass percent of ethane in the original mixture.
How does the value in (a) compare to the surface tension of blood, which is approximately 0.05N/m? What is needed to adjust the surface tension in the lungs so that breathing is possible?
A 32.2 lb object is dropped from a 100 feet building. Determine the velocity and the kinetic energy at the 50 feet level and at 35 feet above the ground.
A articular brand of beef jerky contains 0.0552% sodium nitrite by mass and is sold in an 8.00 oz bag. what is the mass of sodium does the sodium nitrite contribute to sodium content of the bag of beef jerky?
A golf ball rolls off a horizontal cliff with an initial speed of 13.0 m/s. The ball falls a vertical distance of 13.0 m into a lake below. What is the speed v of the ball just before it strikes the water?
The condenser pressure is 10 kpa and both feedwater heaters are open heaters. Calculate the cycle thermanl efficiency and the net work per kg of steam?
The ball is launched at a speed of 43 m/s at an angle of 38° above the horizontal. When the ball lands, it is at the same level as the tee. (a) On the distant planet, what is the maximum height of the ball?
Careful measurements of an ideal gas in a closed, constant volume container indicate that the pressure of the gas is 8.80 atm at 41.3 G0 and 11.33 atm at a temperature of 90.1 G0.
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