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a projectile is fired at an upward angle from the top of a 165 m cliff with a speed of 195 ms what will be its speed
a uniform thin rod of length 07 m and mass 30 kg can rotate in a horizontal plane about a vertical axis through its
crossfire was a popular board game in which players attempted to propel a puck forward towards their opponets side by
a 12600-kg railroad car travels alone on a level frictionless track with a constant speed of 158 ms a 5350-kg load
a 042-kg particle has a speed of 80 ms at point a and kinetic energy of 75 j at point ba what is its kinetic energy at
a 200 kg block is on an inclined plane which makes up an angle of 52 degrees to the horizontal the coeff of friction is
the mars reconnaissance orbiter circles the red planet with a 119 period the mass of mars is 6421023 the radius is
a crate of mass 115 kg is pulled up a rough incline with an initial speed of 150 ms the pulling force is 100 n parallel
a 250kg child plays on a swing having support ropes that are 180m long a friend pulls her back until the ropes are 450
a 1500 kg mass is lowered 200 m and as it is lowered it runs a generator which lights a 100 watt light bulb assuming
a uniform disk of mass mdisk 47 kg and radius r 022 m has a small block of mass mblock 2 kg on its rim it rotates
an 820 kg skydiver jumps out of a balloon at an altitude of 1 280 m and opens the parachute at an altitude of 190 ma
a solid sphere of uniform density starts from rest and rolls without slipping a distance of d 4 m down a q 28deg
a transformer is to be used to provide power for a computer disk drive that needs 60 v rms instead of the 120 v rms
the magnetic field of the brain has been measured to be approximately 30 x 10-12 t although the currents that cause
calculate the heat capacity of a gas sample from the following information the sample comes to equilibrium in a flask
a capacitor has parallel metal plates separated by an air gap of 250mm the arrangement has capacitance of 285pf 1 pf
a turntable must spin at 337 rpm 353 rads to play an old-fashioned vinyl record how much torque must the motor deliver
an adventurous child of mass m releases herself at the top of a water-slide with an initial speed of 600 ms the slide
two forces f1 and f2 are acting on a mass m60 kg the force f1 50i 70j 20k in n the acceleration of the mass is given
a brick of mass 105 kg is attached to a thin massless cable and whirled around in a circle in a vertical plane the
an atwood machine is made with masses m1 100 g m2 120 g and pulley mass of 100 g what is the percent error in
a dinoflagellate takes 52 s to travel 06 mm approximate a dinoflagellate as a sphere of radius 350 microm ignoring the
a water tower supplies water through the plumbing in a house a 254-cm-diameter faucet in the house can fill a
a 1 uc charge is held 10 cm directly above the origin a -1 uc charge is held 5 cm directly to the right of the origina