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Jose, whose mass is 45.0kg, is riding his 5.0-kg skateboard downthe sidewalk with a constant speed of 6.0 m/s when he rolls acros a10.0-m- long patch of sand on the pavement. The sand provides aforce of friction of 6.0N. What is Joses's speen as he emerges from the sandy section?
A 94.0 cm pendulum is released from a small angle. After 113 oscillations the amplitude is one half of its original value. The damping is proportional to the speed of the pendulum bob. Find the value of the damping coefficient, ?, (in Hz).
At a playground you let your kid sister (30 kg) kneel on the surface (near the edge) of a 2.5 meter diameter merry-go-round. What is the constant angular acceleration
Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 23.0m/s as it leaves the hose nozzle. Find the angle of elevation of the hose
one solenoid is centered inside another. the outer one has a length of 45.0 cm and contains 6800 coils, what is the EMF induced in the inner solenoid
The magnitude of the air resistance that opposes its downward motion is 258 N. Explain what is the magnitude of the acceleration of the rock?
A solid steel rod of length 120-cm and mass 450 grams, is rotated about its center with an angular acceleration 23 rad/s2. What is the moment of inertia of the rod, What is the net torque acting on the rod
The primary winding of an electric train transformer has 400 turns and the secondary has 50. If the input voltage is 120V(rms), what is the output voltage
A silver wire has a cross sectional area A = 2.0 mm2. A total of 9.4 × 1018 electrons pass through the wire in 3.0 s. What is the drift velocity of these electrons
Compute the kinetic and potential energies of an airplane weighing 5.00 tons flying at a height of 30.0 × 103 ft at 500. mph. Give answer in both SI and Engineering English units. Assume standard gravity.
Two batteries are connected in parallel to power a wheelchair. find the current provided to the motor
A uniform linear charge density of 4.0 nC/m is distributed along the entire x axis. Consider a spherical (radius = 5.0 cm) surface centered on the origin. Determine the electric flux through this surface
In frozen Minnesota the Winter Sports Carnival includes some unusual events. Since it is dangerous to run on ice, each runner runs on ice, With what speed does the crowd see the woman moving
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