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a pendulum bob swings a total distance of 4cm from end to end and reaches a speed of 10cms at the midpoint find the
a 5 kg piece of metal displaces 075 l of water when submerged what is the buoyant force on the piece of metal give your
a solenoid of radius 35 cm has 800 turns and a length of 25 cma find its inductanceapply the expression for the
a 200g block on a frictionless surface is pushed against a spring with spring constant 500nm compressing the spring by
in a double-slit experiment the slit spacing is 022m the distance to the screen is 330m and light of wavelength 662nm
the velocity of a 621-kg auto is changed from 100 ms to 440 ms in 702 s by an external constant forcea what is the
a 2590-kg van runs into the back of a 821-kg compact car at rest they move off together at 85 ms assuming the friction
a 99-kg fullback running at 82 ms collides in midair with a 126-kg defensive tackle moving in the opposite direction
a car moving at 8 ms crashes into a barrier and stops in 0050 s there is a 17-kg child in the car assume that the
small rockets are used to make tiny adjustments in the speeds of satellites one such rocket has a thrust of 35 n if it
a hockey player makes a slap shot exerting a constant force of 252 n on the hockey puck for 019 s what is the magnitude
a small ball of mass 050 g has an electric charge of 10 x 10-5 c the ball has an initial velocity of 20 ms directed
a beetle 450 mm long is examined with a simple magnifier of focal length 117 cm if the observers eye is relaxed while
a student doing part b of the experiment drops a ball from h0 100 cm and measures the height it rebounds to as h 54
a piston-cylinder device initially contains 1 m of nitrogen gas at 400kpa and 27 c a resistance heater is turned on
a baseball player stealing second base runs at 78 ms if he slides the last 36 m slowing to a stop at the base whats the
a 16320-kg airplane lands with a speed of 89 ms on a stationary aircraft carrier deck that is 115 m long find the work
a 30g dart is shot straight up at 10 ms at the same instant a 21g ball of cork is dropped from 28m above the dartwhat
a 500 g cart is released from rest 100 m from the bottom of a frictionless 300 degree ramp the cart rolls down the ramp
the skiing duo of brian 83 and ashley 46 is always a crowd pleaser in one routine brian wearing wood skis starts at
in the bohr-model hydrogen atom the single electron orbits the nucleus in a circle of radius a 5310 -11 making f 6610
two wheels can rotate freely about fixed axles through their centers the wheels have the same mass but one has twice
1 a spring system consists of a stationary spring and a 100-gram mass attached to one end that slides along a
two batteries are connected in parallel to power a wheelchair if each of the batteries has electromotive force 12v and
suppose a portable electric heater can be modeled by an ohmic resistor if the heater requires 600 watts to operate and