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Two bicycle tires are set rolling with the same initial speed of 3.40 m/s along a long, straight road, and the distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 psi and goes a distance of 18.2 meter; the other is at 105 psi and goes a distance of 93.8 meter. Suppose that the net horizontal force is due to rolling friction only and take the free-fall acceleration to be g = 9.80 m/s2. Find the coefficient of rolling friction for the tire under low pressure?
Preparing to throw baton A in the air, you hold it at the midpoint and give it a twist with your forearm and wrist that applies a torque of 1.4 m·N for a time interval of 0.50 s. What would be the moment of inertia
A 2.0 kg ball is attached to a vertical post with two strings, one 2 m long and the other 1 m long. If the ball is set whirling in a horizantal circle, find the tension on each string
One mole of a monatomic gass initially at 273 K and 1 atm is compressed isothermally (T constant) from volume 22.4 L to 11. 4 L, Find the final pressure and draw a PV diagram, Labeling the initial and final states 1 and 2
A single turn current loop carrying a current of 4.0A, is in the shape of a right triangle with sides 50cm, 120 cm, 130 cm. The loop is in a uniform magnetic field of magnitude 75 mT whose direction is parallel to the current in the 130 cm side of..
Consider a Rankine cycle with water as the working fluid. Superheated vapor enters the turbine at 480°C and 100 bar and exits at 0.06 bar. determine the actual heat removed from the condenser
Two streams of air, one at 1 bar, 27C and velocity of 30 m/s and the other at 5 bar, 227C and 50 m/s velocity, Find the velocity of the stream issuing out of the nozzle
Two electric dipoles with charges +Q, where Q = 5 mC, Find the magnitude of the electric force between the two dipoles.
he boat continues for an additional 5.90 s with an acceleration of +0.518 m/s2. Following this, the boat accelerates at -1.49 m/s2 for 8.05 s. What is the velocity of the boat at t = 21.35 s? Find out the total displacement of the boat?
an electromagnetic wave strikes a 1.91-cm2 section of wall perpendicularly. the rms value of the waves magnetic field
A 21.0 kg child on a 1.00 m long swing is released from rest when theropes of the swing make an angle of 33.0° with the vertical. Neglecting friction, find the child's speed at the lowest position.
The average frictional force exerted on him by the pole has a magnitude of 815 N, and his speed at the bottom of the pole is 3.7 m/s. Explain how far did he slide down the pole?
a human hair is placed between the ends of two microscope slides forming a thin wedge of air between the slides as
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