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Two carts are put back to back on a track. cart A has a spring-loaded piston; cart B which has twice the inertial mass of cart A is entirely passive. when the piston is released, it pushed against cart B and the carts move apart. how do the magnitudes of the final momenta and kinetic energies compare?
A box of textbooks of mass 24.7 kg rests on a loading ramp that makes angle a with the horizontal. The coefficient of kinetic friction is .25 and the coefficient of static friction is .37. Find out the minimum angle at which the box starts to sl..
A 4.5- kg box of books is pulled up a 3.66- m-long inclined plank to a height of 1.4 m. What percent of the work is lost to friction
a soccer ball is kicked with an initial horizontal speed of 5 m/s and an initial vertical speed of 3m/s. find the ball's verical speed at the apex of the flight
It is proposed that future space stations create an artificial gravity by rotating. What rotation period will provide "normal" gravity
The current in a 100 watt lightbulb is 0.800 A. The filament inside the bulb is 0.220 mm in diameter. What is the current density in the filament
The amplitude of a system moving with simple harmonic motion is doubled. The total energy will the be:
A 50g ball of clay traveling at speed v0 hits and sticks to a 1.0kg block sitting at rest on a frictionless surface. what os the speed of the brick after the collision
A solid disk rotates in the horizontal plane at an angular velocity of 0.049 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
You have probably never noticed time dilation effects in everyday life. Calculate the speed that a friend would have to move with respect to you so that your measured time intervals are 1.00% larger than hers
Find out the angular velocity
Suppose you throw a rock from an initial height h0 at a speed v0 and angle ? from the horizontal. Neglect drag or friction, Determine the coordinate system and draw a diagram of the trajectory. Draw the free-body diagram and find the net force
A cigarette lighter in a car is a resistor that, when activated, is connected across the 12-V battery. Suppose a lighter dissipates 32 W of power. find the resistance of the lighter
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