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Calculate the electrical energy expended in a device across which the circuit voltage drops by 20.0 volts in moving a charge of 4 coulombs.
A 9.0 volt battery is connected to four resistors in a parallel circuit. The resistors have 7.0 Ω, 5.0 Ω, 4.0 Ω, and 2.0 Ω respectively. What is the total resistance in the circuit?
Photoelectrons with a maximum speed of 7.00 × 106 m/s are ejected from a surface in the presence of light with a frequency of 8.00 × 1014Hz. If the mass of an electron is 9.10 × 10-31 kg, calculate in joules the maximum kinetic energy of a single electron.
Titanium with Z = 22 has how many electrons in n = 3?
In comparing the gravitational force and the electrical force between two protons, the electrical force is _____ relative to the gravitational force.
A plate of glass by parallel faces having a refractive index of 1.51 is resting on the surface of water in a tank. A ray of light coming from above in air makes an angle of incidence35.5^\circ with the normal to the top surface of the glass.
A garden hose is attached to a water faucet on one end and a spray nozzle on the other end. Find the gauge pressure of the water
Write essay on Fourier Transform: Time-Frequency Analysis
The hammer throw is a track-and-field event in which a 7.30-kg ball (the hammer) is whirled around in a circle several times and released. It then moves upward on the familiar curved path of projectile motion and eventually returns to the ground s..
Electromagnets that produce large magentic fields use water cooling to prevent excessive heating of the magnet's coils. How many liters of water must circulate by the coils each second if the temperature of the coils is not to exceed 49°C
A simple pendulum has a mass of 0.550 kg and a length of 4.00 m. It is displaced through an angleof 55.0° and then released. What is the maximum angular acceleration
a proton and an electron are separated by 3.5 nm, what is the magnitude of the force on the electron and proton
A 0.150-kg block of ice is placed against a horizontal, compressed spring mounted on a horizontal tabletop that is 1.20 m above the floor. The spring has force constant 1900 N/m and is initially compressed 0.045 m. The mass of the spring is negligibl..
mike jumps 1 m down onto a walkway. his downward motion stops in 0.020 seconds. if he forgets to bend his knees what force is transmitted to his leg bones
If the backpack begins to slide when the spring ( = 150 ) stretches by 2.40 , what is the coefficient of static friction between backpack and table.
A carpenter is driving a nail into a board. The 1.25 kg hammer moves at 8.85 m/s when it strikes the nail. find the increase in temperature of the nail after 3 blows from the hammer
q1. the international space station orbits the earth at the average altitude of 362 km. assume that its orbit is
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