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A spherical balloon is made from a material whose mass is 3.00 kg. The thickness of the material is negligible compared to the 1.4-m radius of the balloon. The balloon is filled with helium (He) at a temperature of 301 K and just floats in air, neither rising nor falling. The density of the surrounding air is 1.19 kg/m3. Find the absolute pressure of the helium gas.
A house painter stands 3 m above the ground on a 4.9-m-long ladder that leans against the wall at a point 4.7 m above the ground. find the force of friction that the driveway exerts on the bottom of the ladder
A fighter jet is attempting to land on an aircraft carrier with a runway length of 320m. How far will the jet have to travel before it stops
Suppose the speed of light in a vacuum were only 25.5 mi/h. Find the length of the bicycle being ridden at a speed of 20.0 mi/h as measured by an observer sitting on the park bench, given that its proper length is 1.59 m.
A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.0m x 2.0m. On a certain day, How much energy is 'lost' through the window in one day
Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass, including its contents, of 7.0 kg, and the other has total mass of 5.0 kg. If the 5.0 kg cart is moving at 3.0 m/s after the spring is allowed..
A 17.0 m-long copper wire, 2.10 mm in diameter including insulation, is tightly wrapped in a single layer with adjacent coils touching, What is the length of the solenoid
Find the basic and actual transmission losses between two antennas separated by 30 meters operating at 10 MHz when the gain of each antenna is 1.65 dB
A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 41.0 J, What is the kinetic energy of the system at the equilibrium point
A particle with charge q is at rest when a magnetic field is suddenly turned on. The field points in the z-direction. What is the direction of the net force acting on the charged particle?
A skateboarder shoots off a ramp with a velocity of 6.80m/s, directed at an angle of 59° above the horizontal. The end of the ramp is 1.10 m above the ground.
The inlet of the pipe shown has a cross sectional area of 202.0cm2, and the outlet has a cross sectional area of 75.0cm2. What is the volumetric flow rate in the horizontal pipeline
A plastic bar is rubbed with fur, and the bar aquires a net charge of +8.34 uC. Determine the net charge on the fur
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