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a 20-cm-diameter vertical cylinder is sealed at the top by a frictionless 18kg piston the piston is 79cm above the
phil mickelson launches a gold ball from the tee with a speed of 450 ms at 35 degrees above the horizontal it lands on
a merry-go-round accelerates from rest to 078rads in 34 s assuming the merry-go-round is a uniform disk of radius 70 m
a fuel pump sends gasoline from a cars fuel tank to the engine at a rate of 644 10-2 kgs the density of the gasoline
in proton-beam therapy a high-energy beam of protons is fired at a tumor the protons come to rest in the tumor
a spherical balloon has a radius of 675m and is filled with helium the density of helium is 0179 kgm3 and the density
a submarine dives to a depth of 190 feet in the ocean what is the force in pounds acting on a hatch that has a area of
a scuba diver and her gear displace a volume of 697l and have a total mass of 729kg what is the buoyant force on the
a bungee cord is stretched between two poles with a force of 383 n the length of the cord is 28 meters and it has a
a softball player swings a bat accelerating it from rest to 26 revs in a time of 20s approximate the bat as a 90 kg
a 528 hz sound wave travels through a substance the wavelength of the sound wave is measured to be 32 meters what is
a 681 kg crate is lifted to the top of a building with an acceleration of 337 ms2find the force exerted by the cable on
a glass u-tube with a uniform diameter of 0850 cm is used to determine the density of an oil as shown in the figure
an airplane has an effective wing surface area of 15 m2 that is generating the lift force in level flight the air speed
a train slows from 40ms to 10ms in 3 seconds if its mass is 50000kg what was the change in momentum what was the
a 500-kg elevator is pulled upward with a constant force of 5500 n for a distance of 500 ma what is the work done by
a basketball player jumps straight up and then lands 049 seconds after leaving the ground find the initial velocity of
you propose a new temperature scale with temperatures given in m you define 00 m to be the normal melting point of
a tuning fork is set into vibration above a vertical open tube filled with water the figure the water level is allowed
an ice sheet with area 100 m x 100 m and uniform thickness of 120 m floats in the arctic ocean assume that the density
an investigator collects a sample of a radioactive isotope with an activity of 44times105bq 72hourslater the activity
three vectors have the same magnitude of 12 units they make angles of 2 times and 3 times with respect to the x axis
a very massive object -almost innitely massive - moving with velocity v1 100ms hits a very light object - massless -
jack was exposed to fast neutrons he received a radiation dose of 300rem on part of his hand affecting 280grams of
a speaker which is to be treated as the source point emits sound at a frequency of 4x103 hz and a power of 28 watts