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A Carnot engine operates between the temperatures 420K and 300K
a) How much heat must be given to the engine to produce 2600J of work?
b) How much heat is discarded to the cold reservoir as this work is done?
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24 degrees below horizontal. Find the length of time the car is in the air
She pumps the handle up and down, slowly lifting the car. What is the force exerted on the small piston during each downward stroke?
If this lens is then immersed in silicone oil with a refractive index of 1.52, what will the focal lens of the lens be in this environment
A 1,576-kg car is moving down a road with a slope (grade) of 11% while slowing down at a rate of 3.6 m/s^2. find direction and magnitude of the frictional force
At the bottom of the slope, the path levels out and become horizontal, the snow becomes less icy, and the skier begins to slow down, coming to rest in a distance of 160.00 m along the horizontal path.
Jessica's weight is 540 newtons. According to the Third Law, if the Earth pulls on Jessica with a force of 540 N, then Jessica pulls on the Earth with a force of 540 newtons that acts in the opposite direction.though , if Jessica stumbles while rol..
One method for measuring the speed of sound uses standing waves. A cylindrical tube is open at both ends, find the speed of sound in the gas in the tube
suppose that both cars start at the same point, how much sooner does the faster car arrive at a destination 35 km away.
An object is placed 11.7 cm to the left of a diverging lens of focal length -5.81 cm. Find the distance d that places the final image at infinity
write down the equations expressing conservation of momentum for the components in the x and y directions separately.
Many communications satellites orbit the earth in geostationary orbits. (They appear to remain in the same positions in the sky for observers on the earth's surface.) If such a satellite orbits at a height of 40,000 km, estimation the time delay in a..
Two carts on a frictionless air track are made to travel toward each other. As they collide they stick together. if the cart on the left has a mass of 250 grams and is moving at 0.2 meters per second to the right.
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