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Problem: A child with a mass of 48 kg is riding on a merry-go-round. If the child has a speed of 3 m/s and is located 2.5 m from the center of the merry-go-round,
Part A: What is the child's angular momentum?
Please show all work and steps to find the child's angular momentum.
two cars are moving. the first car has twice the mass of the second car but only half as much kinetic energy. when both
The K-shell ionization energy of iron is 8500 eV, What is the wavelength of Kalpha X-rays emmited by iron
an explorer is caught in a whiteout in which the snowfall is so thick that the ground cannot be distinguished from the
A 100-W electric-resistance heater inside the tank is energized for 10 minutes. Calculate the mass of CO2 in the tank and the temperature and pressure in the tank at the end of the 10 minutes period
White light is incident normally on a thin soap film having an index of refraction of 1.34. What is the thickness of the soap film
Discover the two lowest-order non vanishing terms in the multiple expansion of the potential due to a uniformly charged ring of radius a carrying total charge Q. take the origin at the center of the ring, and neglect the thickens of the ring.
The x-component of the electric field
X rays diffract from a crystal in which the spacing between atomic planes is 0.179nm. The second-order diffraction occurs at 51.0 degrees. What is the angle of the first-order diffraction?
a ball of mass 8.0 g with a speed of 20.5 ms strikes a wall at an angle 21.0o and then rebounds with the same speed and
Two trains running in opposite direction cross a man standing on the platform in 27 sec. and 17 sec. respectively and they cross each other in 23 seconds. Find the ratio of their speed
Two particles are fixed to an x axis: particle 1 of charge -8.93 × 10-7 C is at the origin and particle 2 of charge +8.93 × 10-7 C is at x2 = 11.3 cm. what is the magnitude of the net electric field
A physicist uses a cylindrical metal can 0.300m high and 0.070m in diameter to store liquid helium at 4.22 K; at that temperature the heat of vaporization of helium is 2.09×104J/kg. How much helium is lost per hour
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