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One object is at rest, and another is moving. The two collide in a one-dimensional, completely inelastic collision. In other words, they stick together after the collision and move off with a common velocity. Momentum is conserved. The speed of the object that is moving initially is 21 m/s. The masses of the two objects are 2.6 and 7.0 kg. Determine the final speed of the two-object system after the collision for the case (a) when the large-mass object is the one moving initially and the case (b) when the small-mass object is the one moving initially.
A 1000 kg roller coaster starts from rest at height H= 25 m above the bottom of a 14 m diameter loop. What is the downward force of the track on the car
submarine on the ocean surface receives a sonar echo indicating an underwater object. The echo comes back at an angle of 20 degree above the horizontal and the echo took 3.04s to get back to the submarine What is the object's depth?
A ball of mass m = 3 kg is attached to a vertical pole by two ropes and moves in a horizontal circle at a constant speed. Find the tension in the lower rope
An electric utility company supplies a customer's house from the main power lines (120 V) with two copper wires, find the power delivered to the customer
A uniformly charged sphere has a potential of 490 V on it's surface. At a radial distance of .24m from this surface the potential is 120 V. What is the radius of the sphere
A novice skier, starting from rest, slides down a frictionless 41.0 incline whose vertical height is 230.How fast is she going when she reaches the bottom.
Calculate velocity of the skydiver of mass m=80kg as a function of time. The air drag coefficient D=100g/m=0.1kg/m.
A solenoid 110 cm long and 2.40 cm in diameter carries a current of 16 A. Find the length of wire forming the solenoid
An infinite line of positive charge lies along the y axis, with charge density ? = 2.80 ?C/m. Find the magnitude of the net force exerted on the dipole
You are sitting in a stationary boat and your friend is sitting in another boat nearby. Ocean swells (long waves) are passing by. What is the period of the swell
A 190 kg block is pulled at a constant speed of 4.4 m/s across a horizontal floor by an applied force of 138 N directed 37° above the horizontal. Illustrate what is the rate at which the force does work on the block?
A useful model of a water molecule is sketched in the figure below, with point charges of 5.2 10-20 C at the H sites, What is the total electric potential energy of this model of a water molecule
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