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1 70-kg astronaut is loaded so heavily with equipment that on earth he can jump only to a height of 10 cm how high can
the bridge is 3910m long and is constructed of steel how much longer is the bridge on a warm summer day 300 c than on a
an electron is accelerated from rest through a potential difference of 3750 v it enters a region where b 40 x 10-3 t
a 50 loop circular coil has a radius of 30 cm it is oriented so that the field lines of a uniform magnetic field of
the body contains many small currents caused by the motion of ions in the organs and cells measurements of the magnetic
a man lifts a 13 kg crate directly upwards from the floor to a shelf 6 m high at constant speed neglect the very start
a child pulls a friend in a little red wagon with constant speed if the child pulls with a force of 16 n for 100 m and
to test the effects of high acceleration on the human body nasa has constructed a large centrifuge at the manned
mass a 11 kg and mass b 2 kg sit on the ground 1 m aparta what is size of the the gravitational forceon a from b non b
light from a hydrogen discharge passes through a diffraction grating and registers on a detector 15 m behind the
when a resistor is connected across the terminals of an ac generator 104 v that has a fixed frequency there is a
a merry go round has a moment of inertia of 1000 kgm2 when it is rotating at 262 radsec the motor shut off it then
a 1200 kg car is traveling at a constant speed of 13 ms up a hill that makes a constant angle with the horizontal the
a capacitor is connected across the terminals of an ac generator that has a frequency of 424 hz and supplies a voltage
a 035 kg cart traveling at 06 ms to the right collides with a stationary 055 kg cart after the collision the second
a speaker and two microphones are arranged inside a sealed container filled with neon gas the microphone closer to the
a red car and a green car identical except for the color move toward each other in adjacent lanes and parallel to an x
a step-up transformer has 10 turns on the primary coil and 500 turns on the secondary coil if this transformer is to
on a frictionless track a 055 kg cart is traveling at 070 msec when it runs into a spring that is anchored to the end
an object with mass 50 kg originally moves with 4 ms in the s direction on a horizontal surface and suddenly breaks
the inductance of a solenoid with 450 turns and a length of 35 cm is 55 mha what is the cross-sectional area of the
the angular speed can be represented as rads1 rev2p rad 253e7 revs the electrons travel around a circle of radius
after hitting a long fly ball that goes over the right fielders head and lands in the outfield the batter decides to
a rubber ball of mass 160 g is dropped from a height of 180 m onto a floor the velocity of the ball is reversed by the
a weather vane initially at rest has a moment of inertia of 0104 kg middot m2 about its axis of rotation a 285 g piece