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a stell ball of mass m suspended by a thread of lenght l. the ball is then released when the thread is horizontal. at the bottom of this path, the ball strikes a block of mass M initially on a frictionless surface. the collision is elastic. find:
a. the speed of the ball just after colliion
b. the speed of the block just after collision
c. the fraction of the ball's kinetic energy that was converted to heat.
Two blocks made of different materials, connected by a thin cord, slide down a plane ramp inclined at an angle 32 degrees to the horizontal. Determine the tension in the cord
The specific heat of a certain 50 g metallic block is 900 J/kg K. If the block is at an initial temperature of 80 degrees Celsius, and dropped into a 50 g bucket of water at 1 degree Celsius, Find the final temperature of the system
A communications satellite with a mass of 400 is in a circular orbit about the Earth. The radius of the orbit is 2.8×10^4 as measured from the center of Earth. Compute the weight of the satellite on the surface of the earth.
A 1.80 MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward sound receiver as the heart beats.
You throw a 20-N rock vertically into the air from ground level. You observe that when it is a height 15.4m above the ground, Use the work-energy theorem to find its maximum height
An old-style TV set places 50 kV across two plates of a parallel plate capacitor. An electron is released very close to one plate, find the speed of the electron when it exits the hole in the plate
Two thin lenses with focal lengths of magnitude 15.0 cm, the first diverging and the second converging, are placed 12.00 cm apart. How far from the object is the final image formed
King Arthur's knights fire cannon from the top of the castle wall. The cannonball is fired at a speed of 60 m/s and an angle of 33. A cannonball that was accidentally dropped from the top of the castle wall hit the moat below in 1.80s.
An electron is constrained to the central axis of a ring of charge 1 coulomb and of radius 1 meter. Find the frequency of oscillation of the electron in Hertz
A 5 uF capacitor is initially charged to a potential of 16 V. It is then connected in series with a 3.75 mH inductor.
A man does 4,735 J of work in the process of pushing his 2.70 103 kg truck from rest to a speed of v, over a distance of 25.0 m. determine the horizontal force exerted on the truck
What mass (in grams) of steam at 100°C should be mixed with 257 g of ice at its melting point, in the thermally insulated container, to produce liquid water at 84.0°C.
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