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(a) What minimum amount of energy does this acceleration require from the spaceship's fuel, assuming perfect efficiency?
(b) How much fuel would it take to provide this much energy if all the rest energy of the fuel could be transformed to kinetic energy of the spaceship?
Starting from rest, a 5.3 kg blockslides 2.1 m down a rough 30.0°incline. The coefficent of kinetic friction between the block andthe incline is µk = 0.436. Determine the work done by the force of gravity
When an AC generator is connected across a 12.0? resistor, the rms current in the resistor is 8.00A. calculate the average power delivered to the resistor
A dog on a merry-go-round undergoes a 1.2 m/s2 linearacceleration. If the merry-go-round's angular acceleration is .63rad/s2, how far is the dog from the axis of rotation?
The driver of a car wishes to pass a truck that is travelling at a constant speed of 20 meters per second. Initially, the car is also travelling at 20 meters per second and its front bumper is 24 meters behind truck's rear bumper.
A ping-pong ball has been electrostatically charged such that it has 2.5 x 1015 excess electrons. The ball has a massof 1.0 g. It is observed to float motionless in the presence of auniform electric field. What is the magnitude and direction of th..
A 2400-kg satellite is in a circular orbitaround a planet. The satellite travels with a constant speedof 6.67x10 3 m/s. What is the acceleration of the satellite
Starting from rest a 12 Kg block slides down a frictionless curved slide (h = 8m, the vertical height) from A to B. Find the work done by friction in stopping the block
A Carnot engine operates with an efficiency of 25.0% when the temperature of its cold reservoir is 263 K. Assuming that the temperature of the hot reservoir remains the same, what must be the temperature of the cold reservoir in order to increase ..
A .45kg rock is dropped 7.0 m into 4.0 kg of water. If all the rock's kinetic energy is converted to thermal energy in the water, what's the water's temperature increase
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. What is the average power generated by the lifting force
A 30 kg child rides a 9 kg sled down a frictionless ski slope. At the bottom of the hill, her speed is 7 m/s. If the slope makes an angle of 15° with the horizontal, how far did she slide on the sled?
A 320 kg rocket sled can be accelerated at a constant rate from rest to 1400 km/h in 2.0 s. What is the magnitude of the necessary net force.
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