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A spring of constant 290N/m is used to launch a 1.0kg block along a horizontal surface whose coefficient of sliding friction is 0.25. If the spring is compressed 16cm, how far does the block slide?
You shoot a 47-g pebble straight up with a catapult whose spring constant is 310 N/m. How high above the starting point does the pebble fly
A mountain climber stands at the top of a 52.8m cliff hanging over a calm pool of wat. Find the velocity of the first stone at the instant both stones hit the water
a glass window pane is 1.2 m wide 1.5 m wide and 3 mm thick. the temperature at the inner surface of the glass is 22o c
What must be the temperature of the cold reservoir in order to increase the efficiency to 29.0%
A stationary charged particle at the origin creates an electric flux of 487 N ? m2/C through any closed surface surrounding the charge. Find the electric field it creates in the empty space around it as a function of radial distance r away from the ..
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water while a large ball requires a lot of force. calculate the diameter of the ball
As an electron moves through a region of space, its speed decreases from 6.40 106 m/s to 2.20 106 m/s. Did the electron move to a higher potential or a lower potential
A 80kg person at the fair rides the famous "spinning bottomlesscylinder", (r = 4m). what is the minimum centripetal force needed
a robot unloads a completed component from a machine and places it on a gravity conveyor. the conveyor accelerates from
question a rifle of 8lb fires a bullet weighing 0.8oz which leaves the rifle with a muzzle velocity of 2000 fts. what
A particle with a charge of 4.10 is in a uniform electric field directed to the left. What work was done by the electric force
a golf ball of mass 0.050 kg is at rest on the tee and has a velocity of 102 ms immediately after being struckif the
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