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A Carnot engine has an efficiency of 0.325, and the temperature of its cold reservoir is 414 K.
(a) Determine the temperature of its hot reservoir.
(b) If 3950 J of heat is rejected to the cold reservoir, what amount of heat is put into the engine?
The springs of a 1300kg car compress 6.00 mm when its 68 kg driver gets into the driver's seat. If the car goes over a bump, what would be the frequency of vibrations.
When a potential difference of 172 V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge density of 23.0 nC/cm2
Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), Determine the radius of the path
A driver traveling at 72 km/hr sees an animal dash out onto the road and slams on the brakes. What was the driver's reaction time
Two blocks are connected by a string. The smooth inclined surface makes an angle of 35 degrees with the horizontal, and the block on the incline has a mass of 5.7 kg . The mass of the hanging block is = 2.9 kg.
Four wires meet at a junction. In two of the wires currents I1 = 1.55 A and I2 = 2.15 A enter the junction. Find the current in the fourth wire and indicate its direction
Geologists measure conductive heat flow out of the earth by drilling holes (a few hundred meters deep) and measuring the temperature as a function of depth, what rate is the earth losing heat via conduction?
A piece of Nichrome wire has a radius of 5.50 10-4 m. It is used in a laboratory to make a heater that uses 3.00 102 W of power, estimate the necessary length of wire
A cardboard tube of radius R and length L has a uniform charge density on its surface. Find the potential at a point on the axis of the tube at a distance d from the center.
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of single wavelength. It then falls on two slits separated by 0.410 . In resulting interference pattern on a screen 2.10 away, adjacent bri..
A hot air balloon is a bit like a bubble in water. It rises in air when the mass of relatively cool surrounding air displaced by the balloon is greater than the mass of the balloon, What is the buoyancy
An inquisitive physics student and mountain climber climbs a 55 m cliff that overhangs a calm pool of water. At what time after release of the first stone will the two stones hit the water
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