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A horizontal force P is exerted on a 20-kg box to slide it up a 30 degrees incline. The friction force retarding the motion is 80 N. How large must P be if the acceleration of the moving box is to (a)zero and (b) 0.75m/s2?
A pendulum is made up of a 2.0 kilogram mass suspended on a thin aluminum wire. Determine the length of the pendulum wire at the equator
A 12.0 g bullet is fired horizontally into a 100 g woodenblock that is initially at rest on a frictionless horizontalsurface and connected to a spring having spring constant 150 N/m. what was thespeed of the bullet at impact with the block
The activity of a radioisotope is found to decrease by 30% in 11 days. What is the amount of radioisotope remaining
A bullet of mass M1 and velocity V is embedded on an object of mass M2 at rest. Calculate the height that increases the system after the collision
A cannon is fired horizontally from atop a 40.0 m tower. The cannon ball travels 145 m horizontally before it strikes the ground.With what velocity did the ball leave the muzzle.
Two sound sources radiating in phase at a frequency of 580Hz interfere such that maxima are heard at angles of 0 and 24 from a line perpendicular to that joining the two sources. Find out the seperation between the two sources. The velocity of sou..
A square plate has a side length of 1.2 m. An applied torque of 300 N•m gives the plate an angular acceleration of 4.8 rad/s2 about an axis through the centre of the plate
A block of mass 50 kg is free to slide on a horizontal frictionless surface. A constant force F acting 20° above the horizontal is applied to the block. What is the magnitude of the applied force F
What is the volume of a cube with the Length of cube = 3.2 cm, Width of cube = 3.1 cm, Height of cube = 3.1 cm in m^3?
Draw a FBD for both sets of washers when you had 5 suspended on each side. Calculate and label the magnitude of all forces
A block with mass m = 0.1 kilogram is located on a wedge inclined at an angle theta = 30o above the horizontal. Determine the position of the block when it first comes to rest
Two identical capacitors store different amounts of energy: capacitor A stores 3.3 10-3 J, and capacitor B stores 2.5 10-4 J. Find the voltage across the plates of capacitor A
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