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The "hot shot" heat engine operating between 40A?°C and 380A?°C has an efficiency that is 60% of that of an ideal Carnot engine operating between the same temperatures. If the "hot shot" engine absorbs heat at a rate of 60 kW, at what rate does it exhaust heat?
41 kW
60 kW
36 kW
57 kW
A piece of Styrofoam packing material is dropped from a height of 1.80 meter above the ground. Find what is the acceleration when the speed is 0.150 m/s
a orbiting satellite stays over a certain spot on the equator of rotating earth. what is the altitude of the orbit
compare the supply chain practices of two or more different companies in the same industry or similar industries.
Compute the acceleration of a 0.55m diameter car tire while the car is travelling at a constant speed of 25m/sec. b. compare this with the acceleration experienced by a jet car tire diameter 1 when setting a land speed record of 310m/sec.
At a grocery store, a spring scale (spring constant 450 N/m) hangs near the produce section. What is the velocity of the pan immediately after the oranges land on the pan
You are going to go across Mississippi river from East to West bank by rowing your kayak. You know you can row 3 m/s in still water. What direction you should aim at in order to go across the river in the shortest time
A box is sliding down an incline tilted at an angle of 14 degrees above horizontal. The box is sliding down the incline at a speed of 1.7 m/s. How far does the box slide down the incline before coming to rest
In a head on collision, a car of mass 1.10 x 10^3 kilogram going northward at 25.0 m/s collides with a car of mass 1.50 x 10^3 kilogram going southward at 30.0 m/s. Obtain the amount of mechanical energy dissipated during the collision
Heather and Jerry are standing on a bridge 46 above a river. Heather throws the rock straight down with a speed of 20. Jerry, at accurately the same instant of time, throws a rock straight up with the same speed. Overlook air resistance.
A -10nc charge is located at the origin. What is the strength of the electric field at the position (x,y) = (-5.0cm, -5.0cm).
A star of radius 7.8 × 105 km rotates about its axis with a period of 66 days. Estimate the period of the neutron star
A solid, uniform disk of radius 0.250 m and mass 61.6 kg rolls down a ramp of length 4.60 m that makes an angle of 16° with the horizontal. Find the speed of the disk's center of mass when it reaches the bottom of the ramp
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