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A uniform electric field of 1.5 × 104 N/C is oriented in the positive x direction. A uniform magnetic field of 5 T is oriented in the negative x direction. A proton, which is free to move, is initially at rest and located at the origin at time t = 0. Ignore gravity.
(a) What is the net force on the proton?
(b) What is the velocity (magnitude and direction) of the proton after it has moved 6 m from the origin?
(c) As the proton moves, does its electric potential energy increase, decrease or remain the same?
(d) What is the change in the proton's electric potential after it has moved 6 m from the origin?
The potential energy of a particle moving in the x-y plane is U=a/(x^2+y^2)^1/2, where a is a constant. What is the force on the particle
What least heat is needed to bring 80 of water at 20 to the boiling point and completely boil it away? (answere in Joules).
A transformer for an answering machine takes an ac voltage of amplitude170V as its input and supplies a8.4V amplitude to the answering machine. How many turns does the secondary have
A simple harmonic oscillator consists of the block of mass 1.90 kg attached to a spring of spring constant 196 N/m. while t = 3.00 s, position and velocity of the block are x = +0.129 m and v = +3.415 m/s.
Consider a a series circuit containing an inductor (100 mH), a capacitor (40 microF) and a resistor (50 ohms). It is connected to the AC mains (f = 60 Hz, VRMS = 120 V), What is the new value of capacitance
Explain by how much time elapses while the auto moves the 180 ft? If the acceleration is constant, how much time elapses while the auto moves the 180 ft.
A 2.71 g sample of KCl from the chemistry stockroom is found to be radioactive, and it is decaying at a constant rate of 4490 Bq. Calculate the half-life of this nuclide
he flux passing through a part of the surface of a sphere, of area 0.010 m^2 is 4.0 (N/C)·m^2. Determine the charge enclosed by the sphere
An open-pit coal mine consumes 71hectares of land, down to a depth of 23m, each year. What volume of earth, in cubic kilometres, is separate in this time.
A radiator with a constant temperature of 150o C has a surface area of 5.00 m2. Calculate its rate of heat loss by radiation to the environment
A hotel elevator ascends 140 {rm m} with a maximum speed of 4.59 {rm m/s}. Its acceleration and deceleration both have the magnitude of 1.93 {rm m/s^2}. How long does it take to make complete trip from bottom to top.
A 60-kg student traveling in a car with a constant velocity has a kinetic energy of 1.2 X 104 J. What is the speedometer reading of the car
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