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An airtight box has a removable lid of area 1.60 10-2 m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 7.50 104 Pa. The inside of the box is completely evacuated. What is the magnitude of the force required to pull the lid off the box?
A straight filament 7.00 m in length that is uniformly charged has a total positive charge of 2.0 uC, calculate the electric field at the surface of the cylinder and the total electric flux through the cylinder
What is the total translational kinetic energy in a test chamber filled with nitrogen (N2) at 2.22×105 Pa and 20.7°C? The dimensions of the chamber are 1.00 m × 4.30 m × 6.50 m. The ATOMIC weight of nitrogen is 28.0 g/mol, Avogadro's number is 6.022 ..
A crude model of the human vocal tract treats it as a pipe closed at one end.Find the effective length of the vocal tract in a person whose fundamental tone is 550Hz . Sound speed in air at body temperature is 354 m/s.
A laser used to repair a detached retina has wavelength of 532nm. How many photons are in each pulse
A metallic sphere has a charge of +4.2 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 9.8 109 electrons are transferred. What are the charges of the sphere and the rod now?
Older freezers developed a coating of ice inside that had to be melted periodically; an electric heater could speed this defrosting process. What is the resistance of the wire
What is the magnitude of displacement
A proton travels with a velocity of v = (1.5 x 10^5)m/s i + (4.0 x 10^5)m/s j ? and then enters a magnetic field B = (1.5T)i? . Describe the motion the proton will experience
When a certain element is bombarded with high-energy electrons, Determine the atomic number Z of the element.
Runner A is initially 4.8 km west of a flagpole and is running with a constant velocity of 4.2 km/h due east. Runner B is initially 4.0 km east of the flagpole and is running with a constant velocity of 5.2 km/h due west. What will be the distance of..
The work function for copper is 4.70 eV. Find the cutoff wavelength for copper
A dc motor with its rotor and filed coils connected in series has an internal resistance of 3.2 ?. What is the power delivered to the motor
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