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A heat engine operates in a Carnot cycle between 76.0°C and 355°C. It absorbs 21000 J of heat per cycle from the hot reservoir. The duration of each cycle is 3.00 s. (a) What is the maximum power output of this engine? (b) How much heat does it expel in each cycle?
What intensity level of the horn's sound is observed by somebody waiting at an intersection 58m from the train.
A helicopter is ascending vertically with a speed of 5.30{rm m/s}. At a height of 120 {rm m} above the Earth, package is dropped from a window.
A box-shaped wood stove has dimensions of 0.75 m x 1.2 m x 0.40 m an emissivity of 0.80, Calculate its rate of radiation into the surrounding space
An ideal gas in a piston is placed in a refrigerator, which removes 686 J of energy from the gas via cooling. find the net change in the internal energy of the gas in the piston
The tip of a tuning fork goes through 480 complete vibrations in a time of 0.570s. Find the angular frequency. Find the period of the motion.
A 220 g air-track glider is attached to a spring. The glider is pushed in 12cm against the spring, and then released. A student with a stopwatch finds that 16 oscillations take 11.5.
A 41.7kg boy and a 56.4kg girl are on the surface of a frozen lake, 14.0m apart. Calculate the magnitude of the boy's acceleration
Playing near a road construction site, a child falls over a barrier and down onto a dirt slope that is angled downward at 42° to the horizontal, What is the coefficient of kinetic friction between the child and the slope
Illustrate what are his weight and mass on earth and in interplanetary space where there are no nearby planetary objects?
A uniform electric field of magnitude 2500N/C makes an angle of 27 degrees with a plane surface of area 0.355 m2. what is the net charge inside the box
Electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. The electric field at a point , which is 0.50 m from the center of the sphere, is 15,000 N/C and is directed radially outward. What is the maximum magnitude o..
A block sits on a plate that in turn rests on the surface of a fluid, what is the pressure P in the fluid just below the plate
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