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Your roommate is working on his bicycle and has the bike upside down. He spins the 56.0cm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second.
Part A What is the pebble's speed?
Part B What is the pebble's acceleration?
A surfer is zipping northeast across the river with a velocity of 10 m/s relative to the water. what is the true velocity of the surfer
A man is standing on a platform that is connected to a pulley arrangement, as the drawing shows. What pulling force should the man apply to create an upward acceleration of 1.20 m/s2
Two capacitors, C1 = 6.00 µF and C2 = 14.0 µF, are connected in parallel, and the resulting combination is connected to a 9.00-V battery. (a) Find the equivalent capacitance of the combination.
A capacitor of value C is connected across a battery of voltage V. The capacitor is fully charged. Find the new charge on the capacitor
Calculate the electric force that exists between two objects that are 0.500m apart and carry charges of 0.00450C and 0.00240C. Is this force attractive or repulsive
You apply a potential difference of 4.50 V between the ends of a wire that is 2.50 m in length and 0.654 mm in radius. What is the resistivity of the wire
2.50 kg block slides down the inclined plane at a 20.0degree angle as shown below. Calculte the work done by the force of friction
Assume the sound speed in air is 343 m/s. A jet aircragt's engines emit an 850 Hz roar. What frequency do you hear if the aircraft approaches you at 540mph
A laser emits 1.00 x10^20 photons/sec. The laser has a wavelength of 473 nm. What is the power output of the laser
To keep a door closed, a wooden stick is wedged between the floor and the doorknob. The stick exerts at B a 45-lb force directed along line AB. Swap that force with an equivalent force-couple system at C.
A 69N box of clothes is pulled 8.9 m up a 30° ramp by a force of 100 N that points along the ramp. If the coefficient of kinetic friction between the box and ramp is 0.22, compute the change in the box's kinetic energy.
A rock is thrown vertically upward from ground level at time t = 0. At t = 1.9 s it passes the top of a tall tower, What is the height of the tower
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