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A model-train car of mass 275 gtraveling with a speed of 0.50 m/s links up with another car ofmass 410 g that is initially at rest.
a) What is the speed of the cars immediately after they have linked together?b) Find the initial kinetic energy.c) Find the final kinetic energy.
An ultrasound unit is being used to measure a patient's heartbeat by combining the emitted 2.0 MHz signal with the sound waves reflected from the moving tissue of one point on the heart. What is the maximum speed of the heart tissue
two blocks with masses of 1 kg and 2 kg are initially held together in place as shown in the figure below see
A liquid of refractive index 'n' is filled in a beaker of height 'h'. Find the amount by which a coin at its bottom seems to be raised.
A 5.20 microFarad parallel-plate air capacitor has a plate separation of 5.00mm, Calculate the energy density in the region between the plates, in units of J/m^3
q1. a .3kg baseball travelling at 48 ms approaches a waiting batter. when the ball is hit its back sailing away at 80
derive from the uncertainty principle a formula for the relative spread of the spectral line that corresponds to the
A .41m copper rod w/ mass .17 kg carries a current of 13A in the positive x direction. Let upward be the positive y direction. What is the magnitude of the minimum magnetic field
In a popular amusement park ride, a rotating cylinder of radius R = 3.10 m is set in rotation at an angular speed of 4.20 rad/s, as in the figure shown below. The floor then drops away, leaving the riders suspended against the wall in a vertical posi..
a solid aluminum ingot weighs 71.0 n in air. a. what is its volume? b. the ingot is suspended from a rope and totally
A capacitor consists of square conducting plates 28cm on a side and 5.5mm apart, carrying charges ± 1.8?C, Find the stored energy
part a calculate the magnitude of the force required to give a 0.145-kg baseball an acceleration a1.00ms2 in the
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
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