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in the picture mass 2 is initially at rest and attached to a spring of constant k the spring is fixed to the wall mass
if the man falls with his knees and ankles locked the only cushion for his fall is a 0480 cm give in the pads of his
a 675 kg elevator starts from rest it moves upward for 348 s with constant acceleration until it reaches its cruising
a double slit is opposite the center of a 17-m wide screen 23 m from the slits the slit separation is 24 microm and the
a 20 kg block is projected down a plane that makes an angle of 20degree with the horizontal with an initial kinetic
in a playground there is a small merry-go-round of radius 120 m and mass 220 kg its radius of gyration see problem 85
a positive charge of 4 microcoulombs is located at the center of a spherical shell of inner radius 4cm and outer radius
a 20kg block of wood rests on a long tabletop a 50 g bullet moving horizontally with a speed of 150 ms is shot into the
a red laser pointer with a wavelength of 635 nm is shined on a double slit producing a diffraction pattern on a screen
a crate of mass 90 kg is pulled up a rough incline with an initial speed of 142 ms the pulling force is 98 n parallel
the mass of a star is 175middot1031 kg and it performs one rotation in 373 days find its new period in days if the
when a car going 30ms turns left around a curve of radius 35 cm the 60 kg passenger slides to the right how much force
a 991 -m ladder with a mass of 223 kg lies flat on the ground a painter grabs the top end of the ladder and pulls
on a level road a truck collides head-on with a compact car the fenders lock and the two cars travel as one unit after
a motorcycle which has an initial linear speed of 64 ms decelerates to a speed of 15 ms in 57 s each wheel has a radius
two children hang by their hands from the same tree branch the branch is straight and grows out from the tree trunk at
the hubble space telescope hst has excellent resolving power because there is no atmospheric distortion of the light
what is the magnitude of the electric field strength e such that an electron when placed in the field would experience
a baseball is thrown with an initial horizontal speed of 20 ms and an initial vertical speed of 10 ms find the
what is the electric potential at the surface of a gold atomrsquos nucleus which is assumed to be spherical the radius
a person is riding a bicycle and its wheels have an angular velocity of 269 rads then the brakes are applied and the
an induced emf occurs in a conducting loop of wire 112m long as its shape is changed from square to circular what is
a ldquo75 wattrdquo light bulb uses an average power of 75w when connected to an rms voltage of 120v what is the
a size-5 soccer ball of diameter 226 and mass 426 rolls up a hill without slipping reaching a maximum height of 350