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Suppose a uniform meterstick is at rotational equilibrium when a 200 g mass is suspended at the 5 cm mark, a 130 g mass is suspended at the 85 cm mark, and the support stand is placed at the 40 cm mark. What is the mass of mthe meterstick?
A doubly charged helium atom whose mass is 6.6 ×10?27kg is accelerated by a voltage of 2700V, What is its period of revolution
If a 200 g ball is dropped from 100 meters what is its velocity just before it hits the ground? What is its velocity after it has fallen halfway to the ground (50m)? (neglect air resistance).
A spaceship is 1600 m long when it is at rest. When it is traveling at a certain constant speed its length is measured by external observers and it is found to be 795 m. How much time does the roast beef spend in the oven
Atomic particles are often characterized by their kinetic energy in MeV. What is the speed of the alpha particle with a 5.0MeV kinetic energy?
an electron in a certain region of space has an electric potential energy given by ux 7.6010-15 jx 4.8010-16 jmx3 in
A positively charged rod is brought close to one end of an uncharged metal rod but does not actually touch it. What type of charge does the end of the metal rod closest to the positively charged rod acquire?
q1. the critical angle for a special type of glass in air is 41.8. the index of refraction for water is 1.33. what is
Which means that the clock of a photon's clock
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with amplitude of 20.0 cm.
Spacecraft have been sent to Mars in recent years. Mars is smaller than Earth and has correspondingly weaker surface gravity. What is the orbital period of a spacecraft in a low orbit near the surface of Mars
A proton is released from rest in a uniform electric field of magnitude 421 N/C. Find the electric force on the proton. Find the acceleration of the proton.
the planet venus requires 225 days to orbit the sun which has a mass m 1.99 x 1030 kg in an almost circular
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