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In state-of-the-art vacuum systems, pressures as low as 1.00 10-9 Pa are being attained. Calculate the number of molecules in a 1.80-m3 vessel at this pressure and a temperature of 26.0°C.
A hydrogen atom is in its first excited state (n = 2). Using the Bohr theory of the atom, calculate (a) the radius of the orbit, (b) the linear momentum of the electron.
Compute the final equilibrium temperature.
a spherical void of radius r has cut inside the sphere, find the electric field inside the void if its center is displaced by vector R
a very long, straight solenoid witha cross-sectional area of 6.25cm^2 is would with 44 turns of wire per centimeter, What is the average inducted emf in the secondary coil
A researcher would like to perform an experiment in a zero magnetic field, which means that the field of the earth must be cancelled. What current is needed in the solenoid's wires
An idealized voltmeter is connected across the terminals of a 16.5-V battery, and a 79.5-?appliance is also connected across its terminals. How much power is being dissipated by the appliance
One end of a cord is fixed and a small 0.440-kg object is attached to the other end, What is the tension of the string at this moment
A uniform electric field of magnitude 435 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. What is the work done by the field on the electron
A converging (lens f=+12cm) in contact with a diverging lens gives a combined focal length of +36 cm, calculate the focal length of the diverging lens
A skier traveling 12.0 m/s reaches the foot of a steady upward 18° incline and glides 11.2 m up along this slope before coming to rest. What was the average coefficient of friction
An x-ray tube accelerates electrons from rest at 5.0×10 14th m/s(squared) power through a distance of 20cm . (Such high accelerations are possible because electrons are extremely light.) Find the electrons'velocity after this acceleration. Find th..
How much work is done by an applied force that moves two charges of +8.6 µC that are initially very far apart to a distance of 4.9 cm apart
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