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If our Sun were fourteen times as massive as it is, determine how many times faster or slower should the Earth move in order to remain in the similar orbit?
Jack was exposed to fast neutrons; he received a radiation dose of 160 rem on part of his hand, affecting 27.0 grams of tissue. The relative biological effectiveness (RBE) of these neutrons is 11.0.
Think about the Earth and Mars in their orbit around the Sun. Where is the center of mass located for this three body system? It is closer to the Earth, than it is to either the Sun or Mars. It is closer to Mars, than it is to either the Earth or the..
A spring with constant k=15 N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. it is then pulled down 6 cm and free. if the ball makes 30 oscillations in 20 seconds, what are its maximum speed.
Two disks, (Disk A and Disk B) each having the same mass and Inertia of I=1/2MR^2 are rolling on the floor and then up ramps. The ramp for Disk A has friction, How much farther does it roll
Consider the design of a solar-powered alternate power generation infrastructure that could maintain sufficient electrical power to meet current US annual demand.
A copper ball with a radius of 1.47 cm is heated until its diameter has increased by 0.198 mm. Assuming an initial temperature of 21.3°C, calculate the final temperature of the ball
Estimate the thickness of lead shielding needed to reduce the exposure rate 2.5 m from a 5.92x10^11 Bq point source of Cs-137 to 1.0 mR/hr.
A 0.07 kg bullet traveling at 599 m/s hits a 6.7 kg block of wood, What is the velocity (speed)of the wood block immediately after the bullet hits it
a an electron in a hydrogen atom has orbital angular momentum 5 hbar. what is the smallest total angular momentum it
A 10 kilogram block is placed on an ideal vertical spring that has been compressed 20 centimeter from its equilibrium length. Determine the speed of the block as it leaves the spring
A student sits on a swivel seat. Initially the student is at rest, holding a spinning bicycle wheel that has an angular velocity of 13.9 rad/s. Find the student's final angular velocity
A boy pulls on a wagon with a horizontal force of 75N. what is the average power generated by the child, in watts
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