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Some heat engines can run on very small temperature differences. One manufacturer claims to have a very small heat engine that can run on the temperature difference between your hand and the air in the room.Estimate the theoretical maximum efficiency of this heat engine. Assume hand temerature is 32 °C and room temperature is 23?
A 2000-kg truck is sitting at rest (in neutral) when it is rear-ended by a 1000-kg car going 20m/s .After the collision, the two vehicles stick together. What is the final speed of the car-truck combination
Determine the magnetic moment due to a wireloop 13cm x 15cm, that carries a current of 200 mA, and is situatedin a magnetic field of 1.045 Tesla
Suppose a monatomic ideal gas is contained within a verticalcylinder that is fitted with a movable piston. find Through what distance does the piston drop
A force of -4.4 x 103 N exists between a positive charge of 8 x 10-4 C and a negative charge of -3 x 10-4 C. What distance separates the charges?
A motorboat traveling on a straight course slows uniformly from 60 km/h to 40 km/h in a distance of 50 m. What is the boat's acceleration
An RLC circuit is connected to a 220 V 60 Hz ac voltage source. Determine the power loss in the circuit
An 8.70kg block slides with an initial speed of 1.84 m/s down a ramp inclined at an angle of 28.2 with the horizontal. find the distance the block slides before coming to rest
Two forces, F1 and F2, act at a point. F1 has a magnitude of 9.80 Newton and is directed at an angle of 60 degree above the negative x axis in the second quadrant. Determine what is the x component of the resultant force
Two slits are 0.156 mm apart. Amixture of red light (wavelength = 665 nm) and yellow-green light (wavelength = 565 nm) falls on the slits. A flatobservation screen is located 2.32 maway.
Next to music, Greezy's favorite hobby is skydiving. He jumps out of a plane and, after opening his parachute, reaches a constant terminal velocity of 25 m/s. How much time does Greezy have
Very small forces can have tremendous effects on the motion of very small objects. From rest, how much time would it take for the electron to reach a speed of 3.0 × 106 m/s
A lens placed at the origin with its axis pointing along the x axis produces a real inverted image at x=-24cm that is twice as tall as the object
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