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A pendulum bob with a mass of 0.39 kg is attached to a 1.5 m long string as shown. As the pendulum bob swings from point A, where the angle is (theta) =37 degrees, to point B at the bottom of its arc, decide the change in its gravitational potential energy.
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Three blocks, each of mass 12 kg are on the frictionless table. A hand pushes on the left most box (A) such that the three boxes accelerate in the positive horizontal direction as shown at a rate of a = 1.1 m/s2. What is the net horizontal force on b..
The motor of a ski boat produces a power of 38000 W to maintain aconstant speed of 15.3 m/s. What is the tension in the rope pulling the skier
A cart of mass M1 = 5.00 kg and initial speed = 4.00 m/s collides head on with a second cart of mass M2 = 3.00 kg at rest. find the speed of M2 after the collision
A particle moves along the x axis. Its position is given by the equation 2.00 + 3.00t - 4.00t^2 with x in meters and t in seconds. Find out (1) its position at the instant it changes direction and (2) its velocity when it returns to the position i..
A particle known as a pion lives for a short time before breaking apart into other particles. what is the lifetime according to a hypothetical person who is riding along with the pion
Two forces F1 and F2 are acting on a mass M=6.0 kg. The force F1 = 5.0i + 7.0j + 2.0k, in N. The acceleration of the mass is given by a = 2.0i + 7.0j + 5.0k, in m/s2. Calculate the magnitude of F2.
in most projectile motion problems air resistance is neglected. this oversimplification is acceptable in only a few
determine the fraction of the energy radiated by the sun in the visible region of the spectrum 350 nm to 700 nm. assume
You are in a kayak which can move at a velocity of 2.6 m/s when in still water. You are attempting to cross a river which is 110 across, How long does it take you to get to the other side
An electric charge is uniformly distributed throughout a 12cm radius non conducting sphere. what is the volume charge density of the sphere
a rectangle frame of conducting wire has negligible resistance and width w and is held vertically in a magnetic field
A uniform ladder of mass (m) and length (L) leans against a frictionless wall. If the coefficient of static friction between the ladder and the ground is 0.51, what is the minimum angle (theta) between the ladder and the floor at which the ladder wil..
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