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An electron is 0.030 m from a proton and has velocity 10 m/s towards the proton. What is the speed of the electron
A lens in Lick Observatory's 36-inch refracting telescope has a thickness of 1.96 inches at its center and an index of refraction n=1.52. What is the light speed in the lens
A parallel-plate capacitor has plates of dimension 1.5cm x 3.0cm separated by a 1.5mm thickness of paper, what is the capacitance of this device
In a defribrillator, which delivers the electric energy stored in the 175x10^-6F capacitor to restore the heart's regular beating, find the energy stored in the charged-up defribrillator
The spacing between the plates of a 1.0x10^-6F capacitor is 0.05mm. what is the surface area of the plates
A researcher is trying to shoot a tranquilizer dart at a 1.8-m-tall rhino that is 150m away. What is the magnification of the telescope
790-loop circular armature coil with a diameter of 10.5 cm rotates at 75.0 rev/s in a uniform magnetic field of strength 0.75 T
A copper rod 87cm long is used to poke a fire. The hot end of the rod is maintained at 103%u2218C, What is the temperature of the rod 26cm from the cool end
If there are 5000 lines per cm are ruled on a diffraction grating instrument, Find the spacing of slit used in the experiment
A ball with mass 2.5 kg is moving in outer space with a velocity of 6.0 m/s horizontally, Find the final velocity of the pair
You are standing on a brigde that is 50.0 m above a dried up riverbed. what is the minimum spring constant that the bungee cord must have for you not to hit the riverbed
A transverse wave is travelling in a denser medium is incident on a rarer medium. How the phase of the wave is affected
An 80.0 kg painter climbs a 2.45 m ladder that is at an angle of 25 degrees with a vertical wall. What is the work done by gravity as the painter climbs the ladder
A rifle bullet of mass 8.6 g is fired into a 1.23 kg block where it becomes embedded. what was the initial speed of the bullet
The maximum speed of a 4 kg mass attached to a spring is 0.68 m/s, and the maximum force exerted on the mass is 12 N. What is the frequency of this system
A fire truck siren produces a steady single tone of frequency 500 Hz when at rest. When the fire truck is at rest
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.70 104 m/s, and the radius of the orbit is5.00 106 m. What is the orbital speed of the second satellite
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. What is the radius of the chamber
How much work has been done by an ideal gas, when the temperature of 5 moles of the gas increases by 2 Kelvin in an isobaric process
A circus clown weighs 900 N. The coefficient of static friction between the clown's feet and the ground is 0.4. What is the minimum pulling force that the clown must exert to yank his feet out from un
A father racing his son has two-fifths the kinetic energy of the son, who has one-third the mass of the father. The father speeds up by 1.0 m/s, What is the original speed of the father
A capacitor is charged to a potential of 12.0 V and is then connected to a voltmeter having an internal resistance of 3.50M%u03A9. What is the time constant of the circuit
0.45 kg of a metal at 90degreesC is added to 0.40 kg of whater at 20.0degreesC. If the final temp of the mixture is 26.0degreesC, what is the specific heat of the metal
The magnetic fild inside a superconducting solenoid is 4.50 T. The solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. Determind the magnetic energy density in the field
An electromagnetic wave produced by a dipole antenna is traveling in free space and has an rms electric field amplitude of 17 N/C. find the rms amplitude of the magnetic field