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A fireman 50.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 30.0° above the horizontal. If the speed of the stream as it leaves the hose is 40.0 m/s, at what height will the stream of water strike the building?
An electron moving parallel to the x axis has an initial speed of 3.70 x 106 m/s at the origin. Its speed is reduced to 1.40 x 105 m/s at the point x = 2.00 cm. Which point does the proton have a higher potential energy
The volume of 9 mol of a monatomic gas is increased from 3 L to 6 L at constant pressure. The initial temperature of the gas is 31?C. How much heat must be supplied to the gas
An 88? resistor has a current of 0.70A and is connected in series with a 130? resistor. What is the emf of the battery to which the resistors are connected
wile e. coyote carnivorus hungribilus is chasing the roadrunner speedibus cantcatchmi yet again. while running down the
to measure the acceleration due to gravity on a distant planet an astronaut hangs a 0.102-kg ball from the end of a
A certain speed boat weighs 5,880 N. It can accelerate from 0 to 40 m/s in 5 seconds. a) What is the mass of the boat?b) What is the acceleration?c) How large is the net force acting on the boat?
A 73.0 kg construction worker stands at the far end of the beam.What is the magnitude of the torque about the point where the beam is bolted into place .
The blood flow rate through the aorta is typically 95 cm3/s, and a typical adult has about 5.1 liters of blood. what is the speed of blood as it flows through the aorta
A red ball is thrown down with an initial speed of 1.2 m/s from a height of 25.0 meters above the ground. Then, 0.6 seconds after the red ball is thrown, What is the maximum height the blue ball reaches
A skater with an initial speed of 7.10 m/s stops propelling himself and begins to coast across the ice, eventually coming to rest. How far will the skater travel before coming to rest
A large solar panel on a spacecraft in Earth orbit produces 1.8kW of power when the panel is turned toward the sun. What power would the solar cell produce
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is Save = 1.23×109 W/m2. What is the RMS value of the electric field
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