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A balloon is filled with 4.75 liters of helium at a pressure of 1.05 atm and a temperature of 28.0° C.
(a) Find the mass of the helium.
(b) Find the buoyant force on the balloon if it is placed in the atmosphere with air pressure at 1.00 atm and temperature at 26.0° C.
(c) Find the acceleration of the balloon if the rubber has a mass of 4.00 g.
A particle of mass 4m is placed at a distance of 2.00 m from another particle of mass m. how far will that be orbiting around the earth
What is the charge on a 1.0 cm length of wire. What is the net force exerted on the skier.
An 8 g bullet is fired into a 2.5 kg ballistic pendulum and becomes embedded in it. If the pendulum raises a vertical distance of 6cm, compute the initial speed of the bullet.
At the interface between the steel and the brass the strain in the steel will be higher than the strain in the brass.
A Mercedes-Benz 300SL (m = 1700 kg) is parked on a road that rises 20° above the horizontal. What is the magnitude of the normal force
A proton travels through uniform magnetic and electric fields. The magnetic field is in the negative x direction and has a magnitude of 2.77 mT. what is the magnitude of the net force acting on the proton
In a period of 1.4 s, 5.0 1023 nitrogen molecules strike a wall of area 8.9 cm2. find the pressure exerted on the wall
You exert a force of 21 N on the head of a thumbtack. The head of the thumbtack has a radius of 5 mm. What is the pressure on your thumb
Unpolarized light with an intensity of 980 W / m2 is incident on a polarizer with an unknown axis. What is the angle between the axes of the polarizers
An electron enters a region of space containing a uniform 0.0000179-T magnetic field. Its speed is 151 m/s, Find the radius r of the electron\'s path
Four or five gram blocks of metal are sitting out in the sun and absorb the same amount of heat energy. Use the following specific heat capacity data to resolve which block will increase its temperature the most.
question1a 30-kg girl is bouncing on a trampoline. throughout a certain interval after leaving surface of the
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