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A water heater consisting of a metal coil that is connected across the terminals of a 21.0-V power supply is able to heat 160. mL of water from room temperature to boiling point in 35.0 s. What is the resistance of the coil?
An electric field of 11.0 N/C directed due north is superposed on an existing electric field of 15.3 N/C directed due east
The magnetic field of the earth at a certain location is directed vertically downward and has a magnitude of 50.0 µT. FIND magnitude of the magnetic force the field exerts on the proton
Compute the scalar product V.F
A certain freely falling object requires 1.10s to travel the last 32 m before it hits the ground. From what height above the ground did it fall.
A 69.20-kg free runner jumps off a wall at a velocity of 6.95 m/s at an altitude of 2.37 m above the ground. What is the free runner's kinetic energy when he jumps off the wall
Unpolarized light with an intensity of 650 W / m2 is incident on a polarizer with an unknown axis. What is the angle between the axes of the polarizers
four charges are placed at the corners of a square of side 4 cm. What is the electrostatic potential energy of this system relative to infinity
What wavelength of electromagnetic waves is needed so that the first strong interference maximum in the Bragg reflection occurs when the waves strike the planes at an angle of 15.0o, At what other angles will strong interference maxima occur
A piston in a gasoline engine is in simple harmonic motion. If the extremes of its position relative to its center point are ± 4.50 cm, find the maximum velocity and acceleration of the piston
A neutral sodium atom has an ionization potential of X=5.1eV. Sodium has mass number A=23. What is the minimum speed of a free electron that can ionize a sodium atom in the ground state?
A sphere with radius 0.15m has density p that decreases with distance r from the center of the sphere according to p= 2.75*10^3 kg/m^3 - (9.5*10^3kg/m^4)r
A woman with mass 55.0kg is standing on the rim of a large disk that is rotating at 0.470rev/s about an axis perpendicular to it through its center. Calculate the magnitude of the total angular momentum of the woman-plus-disk system
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