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A 80 bike racer climbs a 1500 -long section of road that has a slope of 4.3 degrees.
By how much does his gravitational potential energy change during this climb?
A probe is traveling in deep space at a speed of 4000 m/s. It has a total mass of 5000 kg. It fires its rocket motor to brake to 3000 m/s, what is the probe's final velocity
At its narrowest point the femur bone in the human leg resembles a hollow cylinder that has an outer radius of roughly 1.1 cm, how much force will be required to rupture it
A certain superconducting magnet in the form of a solenoid of length 1.20 m can generate a magnetic field of 11.0 T in its core when its coils carry a current of 145 A. Find the number of turns in the solenoid
Two boats start together and race across a 56km wide lake and back. Boat A goes across at 56 km/h and returns at 56km/h. Boat B goes across at 28km/h, and its crew, realize how far behind it is getting.
The internal energy of a system changes becasue the system gains 176 J of heat and performs 312 J of work. During this return process, what work is involved
A ten pound car wheel has a moment of inertia of 0.52 kg m2. How much torque is required to stop the wheel in 43.21 s?
A ping-pong ball of mass 4 gm and traveling with a velocity of 4 m/s collides with stationary tennis ball of mass 5 gm. Calculate the magnitude of the velocity of the tennis ball after the collision
An 9.00-cm-diameter, 330g solid sphere is released from rest at the top of a 1.70-m-long, 20.0? incline. What is the sphere's angular velocity at the bottom of the incline
The moon's diameter is 3.48 x 10 6 m, and its mean distance from the earth is 3.85 x 10 8 m. what is the diameter of the moon's image on the screen
A series circuit is connected to a 220-V, 60-Hzpower supply. The circuit has the following components: a 16? resistor, Compute the rms voltage across the resistor
A pipe of 20 cm diameter is carrying a discharge of 0.1 m3/sec. If the diameter of the pipe is reduced to 5 cm at its end, calculate the velocity and velocity head at the pipe outlet.
A certain camera has f-numbers that range from 1.7 to 29. If the focal length of the lens is 57 mm, what is the range of aperture diameters for the camera
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