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A toy car of mass 2.0 kg is stationary and a child rolls a truck of mass 3.5kg straight toward it with a speed of 4.0 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.
Find density of the object
Consider a series RLC circuit where R = 549 ? and C = 1.25 ?F. However, the inductance L of the inductor is unknown. To find its value, What is the inductance of the inductor in millihenrys
A 107A A current circulates around a 2.20-mm-diameter superconducting ring. What is the ring's magnetic dipole moment
2.0 kg block is attached to a spring with spring constant 22 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 46 cm/s.
A hydrogen atom is in the ground state. It absorbs energy and makes a transition to the n = 6 excited state. What are the photon wavelengths of transitions
An x-ray tube is operated at 40600 V. Calculate the minimum wavelength of the radiation emitted by this tube. find the spacing between reflecting planes in the crystal
school yard teeter-totter with a total length of 5.50 and a mass of 36.00 is pivoted at its center. A 19 child sits on one end of the teeter-totter. Where should a parent push vertically downward with a force of 250 in order to hold the teeter-tot..
Assume you are a medieval knight attacking a castle with a cannon. The cannonball leaves the cannon with a speed of 40.7 m/s, What is the time of flight of the cannonball
A conducting spherical shell with a total uniformly distributed charge of -4Q on the combination of inner and outer surfaces has a point charge at the center of the shell
Estimate the force exerted on your fingertip if you place it at this point. Assume area of the fingertip to be 1.4cm^2
A possible spacecraft design uses a solar sail made of aluminized plastic. what is its acceleration at the radius of the Earth's orbit
The Earth can be approximated as a sphere of uniform density, rotating on its axis once a day. The mass of the Earth is 5.97×1024 kg, the radius of the Earth is 6.38×106 m, and the time of rotation for the Earth is 24.0 hrs.
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