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a motorist drives north for 380 minutes at 670 kmh and then stops for 150 minutes he then continues north traveling 130
a 100-kg mass is placed on a 250o degree incline and friction keeps it from sliding the coefficient of static friction
a man and a boy carry a canoe 580 m long and weighing 371 n the canoe is held overhead in a horizontal position the boy
a truck driver has a shipment of apples to deliver to a destination 550 away the trip usually takes him 100 today he
in a 1-d elastic collision between two pucks on a frictionless air-hockey table the pre-collision velocity of puck a is
a billiard ball the 8-ball rests directly in front of the side pocket pool-hand peta calls the shot into the side
light from a sodium light with wavelength 589 nm illuminates two narrow slits the fringe spacing on a screen 180 cm
a rod of length l0 385m and radius r 283cm has one end attached to a wall and the other end is being compressed with
a sheet of glass n150 is coated with a 500 nm thick layer of cubic zirconia n218 assume the wavelengths of visible
a rectangular thin plate of mass m and sides of length a 2m and b 3m spins with constant angular velocity w500 rads
when point charges q1 21 c and q2 81 c are brought near each other each experiences a repulsive force of magnitude
while landing the rotor of a helicopter slows from an angular speed of 4500 rpm to rest in 5 seconds how many
the masses of the earth and moon are 598 times 1024 and 735 times 1022 kg respectively identical amounts of charge are
how much work is done by a person lifting a 20-kg object from the bottom of a well at a constant speed of 20 ms for 50
two charges are placed between the plates of a parallel plate capacitor one charge is q1 and the other is q2 414c the
what is the combined contact force on the log by ropes 1 and 2 in this case give your direction in terms of an angle in
string 1 in the figure has linear density 290 and string 2 has linear density 320 a student sends pulses in both
forces are vector quantities with units of newtons n 98 n of force are required to support 10 liter of water near the
the driver of a car slams on the brakes when he sees a tree blocking the road the car slows uniformly with an
the route followed by a hiker consists of three displacement vectors and vector is along a measured trail and is
use the ideal gas and van der waals equations to calculate the pressure when 225 mol h2 are confined to a volume of 165
the magnitude of the force exerted by a spring is given by f kx where x is the amount of stretchingcompressing of the
1 how many cubic centimeters are in a cubic kilometer2 the speed of sound in air at sea level is around 340ms express
the two vectors and in the figure below have equal magnitudes of 110 m and their angles are 1 30deg and 2 110deg a