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A proton has an initial speed of 3.2×105m/s.
What potential difference is required to bring the proton to rest? Express your answer using two significant figures.
What potential difference is required to reduce the initial speed of the proton by a factor of 2? Express your answer using two significant figures.
What potential difference is required to reduce the initial kinetic energy of the proton by a factor of 2?
Express your answer using two significant figures.
The weight of a star is usually balanced by two forces: the gravitational force, acting inward, and the force created by nuclear reaction, acting outward. Over a long period of time, the force due to nuclear reactions gets weaker, causing the grav..
A trap door, of length and width 1.65 m, is held open at an angleof 65.0 degree with respect to the floor. what is the torque exerted on the trap door by the rope
In a model AC generator, a 505 turn rectangular coil 7.0 cm by 20 cm rotates at 124 rev/min in a uniform magnetic field of 0.56 T. What is the maximum emf induced in the coil
The inner and outer surfaces of a cell membrane carry a negativeand positive charge, respectively. estimate the magnitude of the electric field in the membrane
Say you have a piston falling in a cylinder filled with water. The water is plumbed from the bottom of the cylinder to the top, What would the kinetic energy be at the end of a 20m descent
A 55.8-kg high-school student hangs from an overhead bar with both hands. What is the tension in each arm when the arms make an angle of 38.00 o with respect to the vertical
When ethanol (empirical formula C2H6O) burns, it combines with oxygen and forms carbon dioxide and water. Which of the following is the balanced chemical reaction for the burning of ethanol?
In the first stage of a two-stage Carnot engine, energy is absorbed as heat Q1 at temperature T1 = 530 K, What is the efficiency of the engine
a)What is the angular velocity of the earth (regarded as a particle ) about the sun and b)its average linear speed in its orbit. c) What is the acceleration of the earth with respect to the sun
An RL circuit with L = 3 H and an RC circuit with C = 5 µF have the same time constant, What is this common time constant
Assuming the Congress passes the Paycheck Fairness Act, and please list influences or consequences that the Act can bring to our country. ?short answer (In Your own Words)
A thin homogeneous plate has the shape of an equilateral triangle and is suspended from one apex, acting as a physical pendulum. Use the Lagrangian to obtain the equation of motion and find the frequency of small oscillations, assuming the motion tak..
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