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A balloon is filled with 5.45 liters of helium at a pressure of 1.25 atm and a temperature of 29.5° 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 20.0° C.
(c) Find the acceleration of the balloon if the rubber has a mass of 4.00 g.
A 8 kg stone is dropped from a height of 170 m. Find its kinetic and potential energies when it is halfway to the ground
When driving west toward the Rocky Mountains, you see a peak 2.8 degrees above the horizon. Your GPS gives your current elevation as 1500 m , and according to the map, you're 22.5 km (horizontally) from the peak. Find the peaks elevation.
The magnetic field in a radio wave traveling through air has amplitude 2.5 10-11 T and frequency 2.9 MHz. Find the amplitude and frequency of the electric field
Your new super power Heat-O-Matic insulated blender has both a violent chopping blade and a heating element, what amount of heat flowed into the water from the heating element
A car is traveling at 85.1 km/h at this speed the car has a fuel efficiency of 14.5 km/L. What is the average flow rate of gasoline
A parallel-plate capacitor with plate area3.5cm2 and air-gap separation 0.50?mm is connected to a 12-V battery, How much work was required to pull the plates to their new separation
Illustrate what are the possible weaknesses in the Kimberely Process? Illustrate what role do you think the three sectors will have in addressing these weaknesses?
A cue ball, which has a mass of 0.17 kg, collides head-on with a stationary 8-ball, what was the velocity of the cue ball before and after collision
A delivery man travels 34.0 m north, 23.0 m east, 12.0 m south, then takes an elevator 32.0 m up into a building. What is the magnitude of his displacement
While warming up for a match, a tennis player stands at the baseline of the court, 11.9 m away from the net, how far below the top of the net does it hit
A 3.00-kg block is connected to two ideal horizontal springs having force constants k1 = 28.0N/cm and k2= 19.0N/cm What is the maximum speed of the block
If she were to use the mattress as a trampoline losing contact with it for part of each cycle. What minimum amplitude of oscillation does she need.
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