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A 9.9 cm long spring (k = 900 N/m) is compressed by 2.4 cm. What is the potential energy due to the spring in Joules?
a heat engine operates between a hot reservoir at 950 degree celcius, what is the maximum possible efficiency
Converting sunlight to electricity with solar cells has an efficiency of 15%. What is the theoretical maximum efficiency
what is the energy dissipated in the resistor for a battery with an emf of 12 volts connected to a 545-ohms resistor
Mars rotates on its axis once every 24.8 hours. What is the speed of a geosynchronous satellite orbiting Mars
A volleyball is spiked so that it has an initial velocity of 17.4 m/s directed downward at an angle of 48.8 ° below the horizontal. What is the horizontal component of the ball's velocity
Suppose a cylinder is resting on a horizontal platform on plane x-y with its axis parallel to the y axis, What is the motion (acceleration:linear as well as rotational) of the cylinder
A standing wave is set up in a 200-cm string fixed at both ends. The string vibrates in 5 distinct segments when driven by a 120-Hz source. What is the fundamental frequency for the string
q1. a propeller spins at 1780 revmin.a what is an angular velocity in rads?b what is an angular displacement of the
Consider a series RLC circuit where R = 549 ? and C = 1.25 ?F. However, the inductance L of the inductor is unknown. To find its value, What is the inductance of the inductor in millihenrys
a stel cable is used to keep a 2 m long 10 kg bar horizontal. one end of the bar is mounted to a wall. what tensional force now acts on the bar through the cable
A projectile is fired at 60.0 o above the horizontal. Its initial speed is equal to 150.0 m/s. Like most problems in this class (2010), ignore the effects of air unless told otherwise
A stone is thrown horizontally at 45.0 m/s from the top of a very tall cliff. Calculate its horizontal position and vertical position at 2.00 m intervals for the first 10.0 m
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