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An air track is tilted so that it makes a small angle with the horizontal. An air cart of mass 0.05 kg is given an initial velocity of 5 m/s as measured by photogates. It travels 5 m in 2 seconds up the air track. As the cart moves up the air track, it is observed to slow down and momentarily come to rest. It then begins to slide down the track. Assume negligible friction. What is the speed of the cart when it reaches its starting point again? What is the magnitude of the acceleration for the air cart?
Suppose a ski-jumper lands at a point 63 m down an incline of 35 degrees, What was her speed at take-off
A diver can change his rotational inertia by drawing his arms and legs close to his body in the tuck position, what was his angular velocity when he left the diving board
The conducting rod shown in Fig. 30-50 has length L and is being pulled along horizontal, frictionless, conducting rails at a constant velocity. At what rate does this force do work on the rod
A rms AC voltage of 118 V at 60 Hz is applied to an RLC circuit with 11.8 mH inductor, 0.171 µF capacitor, and 43.1 ? resistor in series. What is the power consumed in the circuit
Household wiring made of aluminum wire with cross-section area 3.1 x 10^-6 m^2 carries a current of 4.5 A. what is the power loss over 5.2 m of wire
A series RLC circuit has R=18kohm, C=14microF and L=0.2H. What is the value of the impedance at this frequency
What is the temperature at point B?What is the work done BY the gas in the transition A to B? What is the efficiency of a Carnot cycle running between the lowest and highest temperature of the cycle above
An electron in the n = 6 state of a hydrogen atom makes a transition to the n = 3, What is the wavelength of the photon emitted
A 0.70 kg ball is moving horizontally with a speed of 7.7 m/s when it strikes a vertical wall. What is the magnitude of the impulse of the ball
The membrane that surrounds a certain type of living cell has a surface area of 5.35 10-9 m2 and a thickness of 9.90 10-9 m. How much charge resides on the outer surface
You measure an electric field of 1.26×106 N/C at a distance of 0.149 m. from a point charge. find the magnitude of the charge
A coil is wrapped with 309 turns of wire on the perimeter of a circular frame (of radius 50cm). Each turn has same area, equal to that of the frame.
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