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a 90 kg bowling ball races down the lane at 15 ms before striking a bowling pin at rest with a mass of 85 kg if the 85
a 230 kg baseball is thrown with a speed of 41 ms what is the balls momentumif the above ball comes to rest in the
an archer lines up an arrow on the horizontal exactly dead center on a target she releases the arrow and it strikes the
in the railroad freight yard an empty freight car of massmrolls along a straight level track at10ms and collides with
a boy of mass 608 kg is rescued from a hotel fire by leaping into a firefighters net the window from which he leapt was
a girl is using a rope to pull a box that has mass of 30kg across a level surface with constant velocity the rope makes
a load of weight w is suspended from a cable of length l on a construction vehicle it all moves along horizontally at a
a 10-kg projectile launched over level ground has three times the kinetic energy at the moment of its launch as it does
a 841 kg crate slides on a horizontal surface the coefficient of kinetic friction between the surface and the crate is
the suitcase is released from rest at a height of 400m above the ground the suitcase has a speed of 370ms when it
in her bathroom mindy has an overhead heater that consists of a coiled wire made of nichrome that gets hot when turned
a portable cd player does not have a power rating listed but it has a label stating that it draws a maximum current of
if a 930-v emf is connected to the terminals a and b and the current in the 40- resistor is 168 a what is the value of
a copper wire has a resistance of 29 at 19deg c an aluminum wire has three times the length and two times the radius
a common flashlight bulb is rated at 0108 a and 328 v the values of current and voltage under operating conditions if
a small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a
an astronaut weighs 925 kg on earth while floating in space he pushes the side of his spaceship with a force of 150 n
two toy cars resting on a frictionless table top are separated by a spring compressed by tying it with a thread if the
a what is the density of neon gas at standard temperature and pressure the atomic mass of neon is 2018 atomic mass
given a system composed of three bowling balls 652 kg each one sliding east at a velocity of 20msecond the second
how much work does a steam crane need to do in order to lift a 108500 kg locomotive back onto the track if the
a 1026 kg car and a 2210 kg pickup truck approach a curve on the expressway that has a raduis of 264 mpart a at what
the air pressure inside the tube of a car tire is 431 kpa at a temperature of 145 degca what is the pressure of the air
a particle whose mass is 2 kg moves in the xy plane with a constant speed of 3 ms in the x-direction along the line y
in a conservative system how do they relate to each other since the subject here is work how are work and energy