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what is ideal efficiency ? calculate the ideal efficiency of an engine wherein fuel is heated to 2700 K and the surrounding air is 300 K?
A 2560 - ? resistor and a 1.9 - ?F capacitor are connected in series across a generator (60.0 Hz, 120 V). Determine the power delivered to the circuit
A 9180 kg ancient treasure chest lies at the bottom of the sea. Its volume is 0.839 m3. How much force is needed to lift the chest
The impact with the racket gives the ball a constant acceleration over a distance of 47 cm. Illustrate what is the magnitude of the net force acting on the ball?
A basketball of mass 610g and circumference 76cm is rolling without slipping on a gym floor. Treating ball as a hollow sphere, what fraction of its total kinetic energy is associated with its rotational motion.
A grandfather clock has a weight at the bottom of the pendulum that can be moved up or down. If the clock is running slow, what should you do to adjust the time properly?
A car rounds a curve that is banked inward. The radius of curvature of the road is R = 116, the banking angle is ? = 29°, and the coefficient of static friction is ?s = 0.27. Find the minimum speed that the car can have without slipping.
A guitar string is 0.7m long and is tuned to play an E above middle C (330Hz).
Force F = (6.0 N) i hat + (-9.0 N) k hat acts on a pebble with position vector r = (0.90 m) j hat + (-0.6 m) k hat, What is the resulting torque acting on the pebble about the origin
A NASCAR racecar rounds one end of the Martinsville Speedway. what is the racecar\'s centripetal (radial) acceleration
A solenoid with 1200 turns per meter has a diameter of 9.00 cm. A current I = 2.57 A flows in the clockwise direction, Find the magnitude of the magnetic flux through the loop
A 2inx4inx8ft is leaning against the wall, draw afree-body diagram of forces on it. what would be the minimum angle of the wooden bar with the floor
What is the greatest mass that can be accelerated upwards at 2.9 m/s2 if the stress in the cable is not to exceed the elastic limit of the cable, that is 2.2 108 Pa.
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