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If a 20kg mass hangs from the right side of a massless bar 5 meters in length and a 5kg mass hangs from the left side of the bar, at what distance is the center of mass from the left end?
A small body of mass 0.13 kg is undergoing simple harmonic motion of amplitude 9.0 cm and period 0.10 s. What is the maximum value of the force acting on it? If the oscillations are produced by a spring, what is the spring constant?
The density of bcc iron is 7900 kg/m3 and its atomic weight is 56. Calculate the side of the cubic unit cell and the interatomic spacing
A satellite moves in a circular orbit around the Earth at a speed of 4420 m/s. Determine the period of the satellite's orbit
A motorist driving along a straight road at a constant speed of 60 -m/s. At time t=0 she passes a parked motorcycle police officer and begins to accelerate at the constant acceleration.
A mass m1 = 3.2 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.3 kg which hangs freely from the string, How much work is done by gravity on the two block system
Two point charges, q1= 2.40 nC and q2= -6.50 nC, are 0.100 m apart. Point A is midway between them; point B is 0.080 m from q1 and 0.060 m from q2 (see the attachment). Take the electric potential to be zero at infinity.
In fair weather, over flat ground, there may be a downward electric field of 155 N/C. (a) Assume that the Earth is a conducting sphere with charge on its surface.
A piece of copper wire has a resistance per unit length of 5.95 10-3 ?/m. Find the magnetic field strength at the center of the coil
An air traffic controller has two aircraft on radar. The first is at an altitude of 0.5 km, a horizontal distance of 3 km measured along the ground to the point directly underneath the plane, and a bearing of 115° west of north.
If an amount of heat equal to magnitude of the work done by friction is absorbed by the crate of fruit and the fruit reaches a uniform final temperature, what is its temperature change DeltaT.
A 0.400-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 23.0 N/m. How far does the putty-block system compress the spring
A 7.30 kg bowling ball strikes a 1.60 kg pin at rest head-on. What is the velocity of the pin after the collision
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