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A 0.76- air cart is attached to a spring and allowed to oscillate. If the displacement of the air cart from equilibrium is x= (10.0cm) cos [(2.00s^-1)t+ pi], find the maximum kinetic energy of the cart. Find the maximum force exerted on it by the spring?
Two 9cm diameter charged disks face each other, 25cm apart. Both disks are charged to - 80 nC.
A 7 kg sled is initially at rest on a horizontal road. determine the change in the kinetic energy of the sled
One displacement vector A has magnitude of 2.78 km and point due north. Another displacement vector B has a magnitude of 7.40 km and also points due north. Provide diagrams and calculate the magnitude and direction of A+B, B-A, A-B.
A 4.20-g bullet embeds itself in a 20.0-kg block, which is attached to a horizontal spring with a force constant of 950 N/m. find the speed of the bullet just before it hits the block
The intensity of sunlight that reaches the Earth's atmosphere is 1400 W/m2. What is the intensity of the sunlight that reaches Jupiter
An Escort and a Camaro traveling at right angles collide and stick together. The Escort has a mass of 1200 kg and a speed of 30 km/h in the positive x direction before the collision. What was the speed of the Camaro
A beam used in construction is made of steel, which has a coefficient of linear expansion of 1.3 × 10-5 K-1. find the change in the length of the beam due to cooling
What is the minimum rate of rotation, in revolutions per minute, required for the spheres to contact the cylinder wall
A 2.96 mA beam of electrons moving at 2.09x106 m/s enters a region with a sharply defined boundary, Find the transmitted and reflected currents
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 3.00 km. What is the distance they travel
a bullet of mass 50 g traveling at 400 m/s due north strikes a rock of mass 500 g at rest and ricochets off the rock going due east. How much energy was lost in the collision
A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end of the wire, What is the mass m of the stone
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