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The electric motor of a model train accelerates the train from rest to 0.820 m/s in 18.5 ms. The total mass of the train is 875 g. Find the average power delivered to the train during the acceleration.
A typical flashlight battery will produce a 0.50-A current for about 3 h before losing its charge. Determine the total number of electrons
Object A, which has been charged to + 29.2 nC, is at the origin. Object B, which has been charged to - 28.9 nC, is at ( x,y ) = ( 0.0;{rm cm},; 1.50 cm ).What is the y-component of force (vec{F}_{rm A ; on ; B})_{rm y} on B due to A.
two gliders a and b with mass 0.50 kg and 0.30 kg respectively move toward each other at 2.0 ms on frictionless linear
How much work did movers do (horizontally) pushing a 140{rm kg} crate 10.60 m across a rough floor without acceleration, if the effective coefficient of friction was 0.700.
Consider light with an initial intensity, I0. Calculate the fraction of light that gets through the following setups: (a) A single polarizer, (b) Two polarizers with their transmission axes 30 degrees apart
a 15kg block is accelerated at 2.4m/s^2 up a frictionless plane inclined at 5 degrees to the horizontal, wth the speed increasing from 10m/s to 35m/s. what is the change in the blocks mechanical energy
A large parallel plate capacitor has plate separation of 0.90 cm and plate area of 361 cm2. How much work is done on the capacitor as the plate separation is increased to 1.80 cm
A truck can move up a road having a grade of 1.0-ft rise every 50-ft with a speed of 15 mi/h. how fast will the same truck move down the hill
Electrons which were initially at rest were subjected to a continuous force of 2×10-12 newton along the entire length of two miles (one mile is 1.6 kilometers) and reached speeds very near the speed of light.
The engine of a model rocket accelerates the rocket vertically upward for 2.0 s as follows: At t = 0, the rocket's speed is zero; at t = 1.0 s, determine the instantaneous acceleration of the rocket at t = 1.5 s
A coil consists of 212 turns of wire. Each turn is a square of side d = 18 cm, compute the magnitude of the induced emf in the coil
A 1.00 uF capacitor is connected in parallel with a 2.00 uF capacitor. The 1.00 uF capacitor carries a charge of +10.0 uC on one plate, Find the equivalent capacitance of the two capacitors
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