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Two plates separated by a distance 18.3 mm are charged to a potential difference of 7.25 volts. A constant 6.81 N force pushes a -8.30 mC charge from the positively charged plate to the negatively charged plate. Using the concept of work-energy, calculate the change in kinetic energy ?T, potential energy ?U, and total energy ?E of the charge as it travels from one plate to the other. Assume the initial speed of the electron is 0.
A 1300kg car drives around a flat 190m diameter circular track at 30 m/s. What is the magnitude and direction of net force on the car.
A moving particle encounters an external electric field that decreases its kinetic energy from 8650 eV to 6910 eV as the particle moves from position A to position B. The electric potential at A is -56.5 V, and the electric potential at B is +28.1..
What is velocity of insect after it has accelerated
You are trying to overhear a juicy conversation, but from your distance of 15m. It sounds like only an average whisper of 20 dB. So you decide to move closer to give the conversation a sound level of 60 dB instead. How close must you come.
assume the coefficient of kinetic friction between m_{rm A} and the plane in the figure is mu_k = 0.15, and that m_{rm{A}} = m_{rm{B}} = 2.7{rm{ kg}}. What smallest value of mu _{rm{k}} will keep the system from accelerating.
A damped mass-spring system oscillates at 265 -Hz. The time constant of the system is 2.0 s. At t = 0, the amplitude of oscillation is 6.1 cm and the energy of the oscillating system is then 61.00 J.
A 3-kg steel ball strikes a wall with a speed of 13-m/s at an angle of 60.0° with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for 0.20s, what is the average force exerted by the wall on the..
What is the concentration of the Cd in the soil if the city of Des Moines adds 3 tons of compost/ acre-6 inches given the compost contains 50 ppm Cd
A student (m = 56 kg) falls freely from rest and strikes the ground. All through the impact with the ground, he comes to rest in a time of 0.04 s.
Illustrate what happens if the party against whom enforcement of an oral contract is sought admits in court that a contract was made?
A 180kg hoop rolls along a horizontal floor so that the hoop's center of mass has a speed of 0.130m/s. How much work must be completed on the hoop to stop it.
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20^circ {rm C}? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
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