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A toy car of mass 3.0 kg is stationary and a child rolls a truck of mass 3.5kg straight toward it with a speed of 7.0 m/s. What are the velocities of the truck and the car with respect to the center of mass of the system consisting of the two toys?
8.95 H inductor with negligible resistance is placed in series with a 15.3 V battery, a 3.00 ? resistor, Calculate the current as time approaches infinity
What is the direction of the induced current in a wire loop that is over a magnetic field, in which the magnetic field is increasing but the loop is not moving?
A capacitor is connected across an ac generator whose frequency is 753 Hz and whose peak output voltage is 140 V. The rms current in the circuit is 3.0 A. What is the capacitance of the capacitor
a heavy flywheel rotating on its central axis is slowing down because of friction in its bearings. find its rotational speed at the end of the second minute
An electron drops from the L shell to the K shell and givesoff an X-ray with a wavelength of 0.0200 nm. What is the atomic number of this atom
On a clear day at a certain location, a 100 V/m vertical electric field exists near the Earth's surface. Compute the energy density of the electric field
A student sitting on a frictionless rotating stool has rotational inertia 0.97 kg*m2 about a vertical axis through her center of mass when her arms are tight to her chest. what's her new rotational velocity
If the frequency that is supplied is set at the circuit's resonance frequency, what is the rms voltage across each of the circuit elements
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. what is the magnitude of the average current in this region
The drawing shows three different resistors in two differentcircuits. The battery has a voltage of V = 27 V,and the resistors have resistancesof R1 = 50.0Ω,R2 = 25.0 Ωand R3 = 10.0 Ω. Determine the current through and the voltage across each resist..
After a day of testing race cars, you decide to take your own 1410 kg car onto the test track. While moving down the track at 10m/s, you uniformly accelerate to 31m/s in 10 s. What is the average net force that you have applied to the car througho..
A 31.0 omegacap.gif resistor and an 16.0 omegacap.gif resistor are connected in series across a 15.0 V battery. What is the voltage out of the battery
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