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A bicyclist starts from rest at the top of a hill and rolls down the hill without pedaling. Assuming there is no friction and the bottom of the hill is 20 meters below the top, what is the bicyclist's speed at the bottom of the hill?
The air inside a bicycle tire pump has 243 joules of work done on it as 66.5 joules of heat is conducted away from it
A spring with an unstrained length of 0.070 m and a spring constant of 2.4 N/m hangs vertically downward from the ceiling. What is the magnitude of the external electric field
Given the strategic decisions in the case, Classify three leadership actions that the industry would need to be consider to implement the decisions. Explain why these are critical to implementing the strategic decision.
A plane move through the air. This results in the air under thewing moving at speed v=50 m/s. what is the lift exerted on the plane in Newtons
An object that hangs form the ceiling of a staionary elevator by an ideal spring scilliates with a period T. If the elevator accelerates upward 2g , what will the period of oscillation of the object ?
A 650 kg weather balloon is designed to lift a 4600 kg package. What volume should the balloon have after being inflated with helium 0 degrees Celsius and 1 atm pressure to lift the total load.
A ceiling fan with 82cm diameter blades is turning at 70rpm. Suppose the fan coasts to a stop 29s after being turned off. Illustrate what is the speed of the tip of a blade 10s after the fan is turned off?
A child on a boat throws a 5.40 kg package out horizontally with a speed of 12.0 m/s. determine the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 26.5 kg and the mass of boat is 55.5 kg.
A 1051 kg coasts down a hill 40 m high with its engine off and the driver's foot pressing the brake pedal. How much energy was converted into heat on the way down
How does the intensity change as position increases? What is the position value corresponding to the highest light intensity, What is the relationship between light intensity and position
The masses of the particles are m1 = m3 = 5.0 kg and m2 = m4 = 8.0 kg. Find out the moment of inertia of the system about the z axis.
A projectile is fired straight upward at 141 m/a. how fast is it moving at the instant it reaches the top of its trajectory? Assume in its place that it was fired upward at 45. What would be its speed at the top of its trajectory.
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