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0.45-kg book slides off of your stack of books 1.75m above the ground, the eraser bounces back up to a height of 1.52m. How much energy is lost during the bounce (in J)? Having lost this energy, how fast does the eraser leave the ground after the bounce?
After doing some exercises on the floor, you are lying on your back with one leg pointing straight up. If you allow your leg to fall freely until it hits the floor, what is the tangential speed of your foot just before it lands? Assume the leg can..
What is the average power dissipation in a series of RC circuit if R=5.00 k-ohm, C=3.00 ?F and V= (170V)cos300t
A rock is tossed straight up with a velocity of 21m/s When it returns, it falls into a hole 10m deep. What is the rock's velocity as it hits the bottom of the hole
consider a system of particles in three dimensions with momentum p and energy E=cIpI,c being the constant.the system is maintained at the inverse temperature 'bita' , volume 'V' and chemical potential 'mu'.
A boy scout starts a fire by using a lens from his eyeglasses tofocus sunlight on kindling 4.6 cm fromthe lens. What is the maximum magnification that can be achieved
A beam of hydrogen molecules, H2, is directed toward a wall, at an angle of 60° with the normal to the wall. What is the beam's pressure on the wall
A convex spherical mirror, whose focal length has a magnitude of 20.6 cm, is to form an image 13.0 cm behind the mirror. What is the magnification of the mirror
neon sign requires 12,000 V to operate which is supplied by a transformer. If the primary on the transformer has 10 turns and is connected to a 120-V outlet, how many turns does the secondary have
A 14.2-g piece of Styrofoam carries a net charge of -0.69 µC and is suspended in equilibrium above the center of a large, horizontal sheet of plastic that has a uniform charge density on its surface. What is the charge per unit area on the plastic..
An object moves in a circular path at a constant speed. What is the direction of the net force acting on the object?
Dermatologists often remove small precancerous skin lesions by freezing them quickly with liquid nitrogen, which may have a temperature as low as 78.1 K. What is this temperature on the (a) Celsius and (b) Fahrenheit scales?
A particular heat engine has a useful power output of 4.90 kW and an efficiency of 27.0%. In each cycle, Find the time interval for each cycle
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