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A 4.50g bullet is fired horizontally into a 2.35kg wooden block resting at the bottom of a 25 degree inclined surface. the coefficient of Kinetic friction between the block and the surface is 0.18. The bullet remains embedded in the block, which is observed to slide 0.275m along the surface before stopping. What was the initial speed of the bullet?
A car of mass = 1200kg traveling at 55.0km/hr enters a banked turn covered with ice. What is the radius r of the turn
when a bell is rung standing waves are set up around the bells circumference. what boundary conditions must be
A small ball rolls horizontally off the edge of a tabletop of height h. It strikes the floor a distance x horizontally away from the edge of the table, What is its speed at the instant it leaves the table
an electric generator consists of a rectangular coil of wire rotating about its longitudinal axis which is
You pull a 70 kg block up a 400 incline so that the tension of the rope is parallel to the incline. What is the net work done on the block
Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. What is the theoreti..
a child on a swing set swing back and forth if the length of the supporting cables for the swing is 2.1 m long, what's acceleration does to gravity or oscillation
On a hot summer afternoon, Keith is out fishing in a rowboat when he decides to jump into the water and go for a swim, what is its velocity in the opposite direction after he jumps
A 60 kg barrel is lifted 2.0 m in the air using a pulley system with a mechanical advantage of 3. How much work does the person do lifting the barrel
A particle whose mass is 6.0 grams and whose charge is 5 nC is released from rest when it is 20 cm from a second particle of charge 8 C. Find the magnitude of the particle's initial acceleration
in the produce section of a supermarket, five pears are placed on a spring scale. The placement of the pears stretches the spring and causes the dial to move from zero to a reading of 2.0kg. If the spring constant is 450 n/m, what is the displacement..
A helium-neon laser (? = 630 nm) is used in a single-slit experiment with a screen 7.5 m away from the slit. If the slit is 0.8 mm wide, what is the width of the central bright fringe on the screen
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