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A 1200 kg truck is accelerating uniformly from rest to 20.0 m/s east while travelling 30.0 m east across the level ground. The coefficient of friction between the tires and the road is 0.45. What is the acceleration of the truck? What is the force of friction? How much work was done during the acceleration?
Four charges are placed in a three-dimensional space. The charges have magnitudes +1nC, 4nC, +1nC, and 9nC. what will be the electric flux through that surface
A charge particle of mass .0020kg is subjected to a 6 T magnetic field which is acts as a right angle to its motion. if the particle moves in a circle of radius .20m at a velocity of 5.0 m/s. what is the magntiude of the charge on the particle.
A 4.25-kg watermelon is dropped fromrest from the roof of a 20.5-m-tallbuilding and feels no appreciable air resistance.
A fight breaks out at club event in Hollywood. As a result, a chair hits a 4.0 meter long metal baron the stage. Find at what speed did the sound pulse travel through the metal bar
A particle executes simple harmonic motion with an amplitude of 7.1 cm. At what displacement (in cm) from the midpoint of its motion will its speed equal one half of its maximum speed?
Two point charges lie along the y-axis. A charge of q1 = -7 uC is at y = 6, and a charge of q2 = -6.5 uC is at y = -4 m. Locate the point (other than infinity) at which the total electric field is zero.
An object has a volume of 0.25 m^3 and weighs 3000 N. What will be its apparent weight when submerged in water
An 78.3 centimeter long pendulum with a 0.516 kilogram bob is released from rest at an initial angle of θ0 with the vertical. At the bottom of the swing, Find what angle does the pendulum make with the vertical
A sled and rider with a combined mass of 55 kilogram are at the top of a hill a height of 35 meter above the level ground below. After the push, find the total mechanical energy of the sled and rider at the top of the hill
A ball is dropped from the top of a 46.0m -high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 26.0m/s. How far above the base of the cliff does this happen
You want to construct a physical pendulum with a period of 4.0 s at a location where g = 9.8m /s2. (a) What is the length of a simple pendulum having this period?
A rotating fan completes 1190 revolutions every minute. Consider the tip of a blade, at a radius of 17.0 cm. (a) During what distance does the tip move in one revolution? What are (b) the tip's speed and (c) the magnitude of its acceleration? (d) Wha..
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