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A 75kg astronaut is holding a 5kg ball while in deepspace. He wants to use the ball to travel backwards towards his ship by throwing the ball foward. He estimates that he can throw the ball with velocity 20m/s. What velocity will he acquire? and how long will it take him if his ship is 20m away?
two hockey players strike a puck of mass of .164kg, one from westward force of 1.10 x 10^3 Newtons, what is the degrees north of west
A spring with spring constant 33 N/m is attached to the ceiling, and a 4.5 cm diameter, 1.5 kg metal cylinder is attached to its lower end. what length of the cylinder is submerged
A hollow aluminum cylinder 21.0cm deep has an internal capacity of 2.000 L at 15.0°C. It is completely filled withturpentine and then warmed to 79.0°C. How much turpentine overflows
When cruising at 75 MPH on a highway, a car's engine develops 45 hp. The car's engine has a thermodynamic efficiency of 25% and 1 gallon of gasoline has an energy content of 1.3 × 108 J. How many gallons of gasoline are consumed each second
An ideal spring of outstretched length 0.20 m is placed horizontally on a frictionless table as shown above. Calculate the maximum speed attained the 8 kg block
A car with a mass of 800 kg moves up a hill inclined at an angle 15? to the horizontal with a constant acceleration of 2.5 ms?2. Find the force of the engine
A uniform plate of height 1.920 m is cut in the form of a parabolic section. The lower boundary of the plate is defined by: y = 1.000 x2. The plate has a mass of 1.17 kg.
assume a long, straight wire carries a current of 6.5 .what would be the frequency of vibrations.
A 2.63g aluminum bullet at 31.9 degrees C is fired at a speed of 204 m/s into a large block of ice at 0 degrees C, in which it embeds itself. What quantity of ice melts
A raindrop of mass 3.27 10-5 kg falls vertically at constant speed under the influence of gravity and air resistance, What is the work done on the raindrop by air resistance
A 4.30 capacitor that is initially uncharged is connected in series with a 7.90 resistor and an emf source with 225 negligible internal resistance. what is the voltage drop across the capacitor
The "tube length" of a microscope is defined to be the difference between the (objective) image distance and objective focal length: L=di%u2212fobjective. How far from the object should this lens be placed
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