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For a balloon ride, the balloon must be inflated with helium to a volume of 1500 m3 at sea level. The balloon will rise to an altitude of about 12 km, where the temperature is about -52oC and the pressure is about 20 kPa. Assume the initial gas temperature and pressure to be 295 K and 1 atm.
How much helium should be put into the balloon?
A 2 centimeter diameter parallel plate capacitor with a spacing of 0.50 millimeter is charged to 200 Volt. Determine the total energy stored in the electric field
A cube of edge length l = 3.80 cm is positioned as shown in Figure P30.35. A uniform magnetic field given by B = (5.50 i + 4.00 j + 3.00 k) T , Calculate the flux through the shaded face
A playground merry-go-round of radius 1.9 m has a moment of inertia 272 kg.m2 and is rotating at 6 rev/min about a frictionless vertical axle. What is the new angular speed of the merry-go-round
When responding to sound, the human eardrum vibrates about its equilibrium position. What is the frequency (in Hz) of the eardrum's vibrations
q1. what is the acceleration of two falling sky divers mass 109.0 kg including parachute when the upward force of air
The current in a 100 watt light bulb is 0.760 Amp. The filament inside the bulb is 0.290 millimeter in diameter. Calculate the current density in the filament
Unpolarized light with I=120 w/m^2 travels in the x direction and passes through a linearly polarizing film oriented in the z direction, What is the final intensity of the beam passing through all three polarizing films
A ball of mass 8.0 kg is suspended by two wires from a horizontal arm, which is attached to a vertical shaft, What are the tensions in wires 1 and 2
Earth-orbiting satellites can be used to help study heavenly bodies such as asteroids. Let us first look at some basic orbital characteristics applicable to the motions of satellites, planets, moons, and asteroids. Go to http://www.fearofphysics.com ..
Air that initially occupies 0.144 m3 at a gauge pressure of 131.1 kPa is expanded isothermally to a pressure of 101.3 kPa, Compute the work done by the air
An incident x-ray photon is scatterted from a free electron that is initailly at rest. What is the magnitude of the electron after its collision
Positive charge is spread uniformly over the surface of a spherical balloon 70cm in radius, resulting in an electric field of 36kN/C at the balloon's surface. What is the net charge on the balloon
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