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Two carts are put back to back on a track. cart A has a spring-loaded piston; cart B which has twice the inertial mass of cart A is entirely passive. when the piston is released, it pushed against cart B and the carts move apart. how do the magnitudes of the final momenta and kinetic energies compare?
A space vehicle is coasting at a constant velocity of 28.5 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.523 m/s2 in the +x direction.
a ball is thrown horizontally from a 20-m-high building with a speed of 5.0 m/s , Make a sketch of the balls trajectory
The vitreous humor, a transparent, gelatinous fluid that fills most of the eyeball, What are ranges of wavelength, frequency and speed of light
A motor is connected to a solid cylinder with a diameter of 1.2m and a mass of 51kg. Write down Newton's 2nd Law for this object
A heat pump uses an ideal Carnot cycle to heat a house. The outside air has a temperature of 294 K, In the scenario described in the previous question, how much energy is transferred out of the outside air
The quartz crystal in a digital watch has a frequency of 32.8 kHz. What is its period of oscillation?
A model rocket with mass 1.67kg starts from rest on the ground and accelerates upward with engine force 46.8N. find the work done by the rocket engine
A person pushes on a stationary 125 N box with 69N at 30degrees below the horizontal, What is the friction force on the box
Gold, which has a density of 19.3 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber.
A yo-yo is made of two solid cylindrical disks, each of mass 0.052 kg and diameter 0.070 m, joined by a (concentric) thin solid cylindrical hub of mass 0.0053 kg, What fraction of its kinetic energy is rotational
When an 81.0 kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2.10 x 10^3 J. By how much does the potential energy of a(n) 20 kg child increase when the child climbs a norma..
If 11.6 g of gold is deposited on the negative electrode of an electrolytic cell in a period of 3.03 hours, then what is the current through the cell during this period
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