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a geologist finds that a moon rock whose mass is 820 kg hasan apparent mass of 618 kg when submerged in water what is
an arrow is shot horizontally from a height of 49 metersabove the ground the initial speed of the arrow is
the rms speed of the molecules in 19 g of hydrogen gas is 1800 msa what is the total translational kinetic energy of
you need to fit a copper collar tightly around a steel shaft that a has a diameter of 5600 cm at 20degc the inside
a uniform crate with a mass of 25 kg rests on a floor with acoefficient of static friction equal to 056 the crate is
clarice is standing at the edge of a steep cliff when a boulder comes loose from the edge and falls directly downward
a person ofmass 75 kg stands at the center of a rotating merry-go-roundplatform of radius 28 m and moment of inertia
a hollow cylinder hoop is rolling on ahorizontal surface at speed v 48 ms when it reaches a12deg inclinea how far up
at age 40 a man requires contact lenses f650 cm to read abook held 250 cm from his eyes at age 45 he finds thatwhile
gas is contained in an 70 lvessel at a temperature of 20degc and a pressure of 88 atma determine the number of moles of
a coil has 272 resistance and 0405 h inductance if the current is 492 a and is increasing at a rate of 442 a s what is
in a slow pitch softball game a 200 kgsoftball crosses the plate at 150 ms at an angle of 45 degreesbelow the
an unstable atomic nucleus of mass 17 x10-27 kg initially at rest disintegrates into threeparticles one of the
when red light in a vacuum is incident at the brewster angleon a certain type of glass the angle of refraction is
violet light and red light travel through air and strike ablock of plastic at the same angle of incidence the angle
an object is placed in front of a converging lens in such aposition that the lens f 136 cm produces a real
a canoe has a velocity of 0550 southeast relative to the earth the canoe is on a river that is flowing at 0510 east
a window washer is standing on a scaffold supported by avertical rope at each end the scaffold weighs 210 n and is 300
a 70 kg diver steps off a 10 m tower and drops straight downinto the water if he comes to rest 5 m below the surface of
two point charges are on the y-axis a 60 microc charge is located at y 150 cm and a -216 microc charge is located at y
a long solenoid with 100 turns cm and a radius of 700cm carries a current of 200 ma a current of 600 a exists in a
two capacitors give an equivalent capacitance of 950 pf when connected in parallel and an equivalent capacitance of 160
on planet x the pressure at a depth of 200 m below thesurface of a liquid nitrogen lake the pressure is500105nm2 at a
a 022 mmicrof capacitor is charged by a 15 v battery after being charged the capacitor is connected toa small electric
a 280g wood block is firmly attached to a very lighthorizontal spring the block can slide along a table