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A marble is rolled down a ramp with a height of .15 m. The marble travels a distance of 1.38 m. What is the velocity of the marble? Please show work
A straight horizontal wire carries a current of 3.55 ?A. A proton is moving above the wire in a direction parallel to it but opposite to the direction of the conventional current in the wire, How far is the proton above the wire
In order to study the long-term effects of weightlessness, astronauts in space must be weighed (or at least "massed"). Find the mass of the astronaut
A proton is shot at 5 × 107 m/s toward a gold atom, with a mass 197 times that of the proton, What is the recoil speed of the gold nucleus
The nonconservative wind and lift forces take the balloon up, doing +9.70 104 J of work on the balloon in the process. Illustrate at what height above the surface of the earth does the balloon have a speed of 8.90 m/s?
how much kinetic energy does each electron have. Blocks of mass m_1 and m_2 are connected by a massless string that passes over the pulley.
A horizontal 790-N merry-go-round of radius 1.60 m is started from rest by a constant horizontal force of 55 N applied tangentially to the merry-go-round
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm . What is the acceleration of the object at t= 2.50 s ?
Two charged spherical conductors are connected by a long conducting wire, and a charge of 15 μC is placed on the combina- tion. One sphere has a radius of 4.05cm and the other a radius of 6.05cm.
A tetherball leans against the smooth, frictionless post to which it is attached, What is the force the pole exerts on the ball
The objective of a refracting astronomical telescope has a focal length of 3.60 m. What is the angular magnification of the telescope
Find out the tension in the two strings. string between m1 and m2 2 N string between m2 and the 3.00 kg mass
In coming to a stop, a car leaves skid marks 91m long on the highway. Assume a deceleration of 7.5m/s2, compute approximately the speed of the car just before braking.
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