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A uniform bar balances 26.6 cm from one end. When a 0.740 kg mass is hung from that end, that balance point moves 8.56 cm toward that end. What is the mass of the bar?
The electric potential immediately outside another charged conducting sphere is 190 V, Determine all possible values for the radius of the sphere
A horizontal beam of electrons initially moving at 4.0x10^7 m/s is deflected vertically by the vertical electric feild between oppositely charged parallel plates
The escape velocity of a bullet from the surface of planet Y is 1791 m/s. Calculate the escape velocity from the surface of the planet X
A massless spring hangs from the ceiling with a small object attached to its lower end. What is the frequency of the oscillation
A 540 g ball swings in a vertical circle at the end of a 1.2 m-long string. When the ball is at the bottom of the circle, What is the speed of the ball at that point
A 77.4 kg manm lifts a 1.3 kg box from the floor a height of 1.1m in 2.1 seconds, what is the change in gravitational potential energy
Use the table shown below to determine the energy in eV of the photon emitted when an electron jumps down
The membrane of the axon of a nerve cell is a thin cylindrical shell of radius r = 10-5 m, length L = 0.42 m, and thickness d = 10-8 m. Find the electric field through the membrane
What is the highest height reached by the rocket. what is its initial speed as it leaves the ground.
the football has a mass of .40kg and the quarterback that threw the ball accelerated it from rest to 25 m/s in a distance of .60m. what force did the player's hand exert on the ball
If you are designing a lander for Venus in the shape of a hemisphere 2.6m in diameter, how many newtons of inward force must it be prepared to withstand due to the Venusian atmosphere
A cylinder with a piston contains 0.300 moles of oxygen at 2.20×10^5 pa and 340 K . The oxygen may be treated as an ideal gas. Find the internal-energy change during the final cooling
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