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A 500 kg rocket sled can be accelerated at a constant rate from rest to 1500 km/h in 2.1 s. What is the magnitude of the required net force?
You're carrying a 3.2-m-long, 25 pole to construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. How much force must you exert to keep the pole motionl..
A transformer has 400 primary turns and 1510 secondary turns. The input voltage is 120 V and the output current is 16.0 A. Assume 100 percent efficiency. What is the output voltage
q1. a 36.0 kg uniform beam is attached to a wall with the hinge while its far end is supported by a cable such that the
question1a race car starts from rest on a circular track of radius 407 m. the cars speed increases at the constant rate
How much work is done by the motor when the motor when the position of the arm is moved from x=0.150m to x=0.750m? what is the power of the motor in watts
An open-topped freight car with mass 24000 is coasting without friction along a level track. Since the rain is falling downward, how is it able to affect the horizontal motion of the car
What is lemmings kinetic energy
The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0° angle with the ground. Explain how far up the ladder can an 900 N person climb before the ladder begins to slip?
An electric car accelerates for 8.0 s by drawing energy from its 345-V battery pack. During this time, Find the minimum horsepower rating of the car
A hydrogen atom consists of a single proton and a single electron. Experimentally it is found that it takes 13.6eV of energy to strip the electron from the proton. calculate the size of the hydrogen atom
two forces are applied to a stump by two tractors. one is a 150 n force to the east. the other is 100 n in a direction
a 100 MeV particle decays into two particles. one of these two particles has a mass of 10 MeV and a speed of 3/5. a) what are the mass and speed (in the initial particle rest frame) of the second particle
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