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Use the ideal gas as a model to estimate the rms speed of a free electron in a metal at the following temperatures.
A) 273 K
B) 2700 K (a typical temperature of the cathode in a CRT).
A point charge of -6.8 µC is at the origin. What is the electric potential due to this charge at (-2.0 m, 0)? What is the electric potential to this charge at (2.0 m, -2 m)?
Top professional pitchers can throw fastballs at speeds of100mph. Given that 1 mph=0.447m/s. WHat is this speed in meters per second
An ideal gas is compressed at constant pressure to one-half its initial volume. a)If the pressure of the gas is 150kPa , and 770J of work is done on it, find the initial volume of the gas.
A 4 kg box is raised from rest adistance of 6 m by a vertical force of110 N. Find the final kinetic energy of the box
If the radius of the equipotential surface of a point charge is 22.5 meter and is at a potential of +2.00kV (compared to zero at infinity), find the magnitude and sign of the point charge
A circular coil (500 turns, radius=.195m) is rotating in a uniform magnetic field. At t=0 s. Find the magnitude of the magnetic field at the location of the coil
A neutron star will be detected from Earth as a pulsar by itsregular radio pulses only if. What is believed to be the maximum mass for a neutronstar?
A parallel-plate capacitor has circular plates with radius 45 centimeter and spacing 1.0 millimeter. Obtain the magnetic field between the plates on the symmetry axis
The mass of the moon os 7.3*10^22 kg and its radius is 1.74*10^6m. What is the acceleration due to gravity on the surface of the moon? What is the weight of an astronaut if his mass is 75kg?
A tank of helium gas used to inflate toy balloons is at a pressureof 15.5x108 Pa and a temjperature of 293K. The tank'svolume is 0.020 m3. How large a balloon would it fill at1.00 atmoshpere and 323K?
a physics teacher performing an outdoor demonstration suddenly falls from rest off a high cliff and simultaneously
A nonrotating cylindrical disk of moment of inertia I is dropped onto an identical disk rotating at angular speed w. what is the final common angular speed of the two disks
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