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A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 55.1 J, What is the kinetic energy of the system at the equilibrium point
a 3,000-kg vehicle collides with a 1,000-kg stationary vehicle. What was the speed of the 3,000-kg vehicle
A 41.9 g object is attached to a horizontal spring with a spring constant of 10.8 N/m, What is the velocity of the object when it is halfway to the equilibrium position
What is the magnitude of the average force required to stop 1200kg car in 9.0 if the car is traveling at 65km/h
A 2070 kg railroad flatcar, which can move with negligible friction, is motionless next to a platform. What is the speed of the flatcar if he then stands on it
One particle has a mass of 4.42 x 10-3 kg and a charge of +7.35 %u03BCC. A second particle has a mass of 8.69 x 10-3 kg and the same charge. Find the initial separation between the particles
A 0.600 kg ball falls directly down onto concrete, hitting it with a speed of 13.5 m/s and rebounding directly upward with a speed of 3.00 m/s. What is the impulse on the concrete
An object of mass 2.5 kg on a table is connected to a hanging object of mass 11.2 kg by means of a string via a pulley. Caculate the acceleration of the system
In the Michelson-Morley experiment, a null result, or a net fringe shift of ΔN = 0 was obtained when the Michelson interfero meter was rotated by 90°.
two 28.0 kg ice sleds that are placed a short distance apart, one directly behind the other. What are the final speeds of the two sleds
A hollow sphere of inner radius 6.8 cm and outer radius 7.8 cm floats half-submerged in a liquid of density 750 kg/m3. What is the mass of the sphere
A small block of mass 1.21 kg slides without friction on a horizontal table. Initially it moves in a circle of radius R0 = 0.62 m with a speed 1.8 m/s. What is the torque placed on the mass by the s
A uniform cord of length 4.0 cm and mass 26 g is initially stuck to a ceiling. What is the change in the gravitational potential energy of the cord
Engine oil (?=0.20Pa?s) passes through a 2.60mm diameter tube in a prototype engine. What pressure difference is needed to maintain a flow rate of 6.5mL/min
Suppose you want a capacitor bank with a total capacitance of 1.450 F and you possess numerous 2.50 mF capacitors. What is the smallest number you could hook together to achieve your goal
A 5.6cm diameter horizontal pipe gradually narrows to 2.9cm. When water flows through this pipe at a certain rate, What is the volume rate of flow
A geologist finds that a Moon rock whose mass is 9.64kg has an apparent mass of 6.25kg when submerged in water. What is the density of the rock
Three resistors, 20 %u03A9, 50 %u03A9, and 82 %u03A9, are connected in series, find the potential difference across this equivalent resistance
The electric potential energy stored in the capacitor of a defibrillator is 68 J, What is the potential difference across the capacitor plates
The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. What is the magnitude of the electric field in the membrane
a basball pitcher pitches with a horizontal velocity of 80mph(36m/s) the horizonatal distance from the point of release to home plate is 59ft. what is the intantous linear velocity of the sweet spot
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 32000 V. find the electron speed just before the electron strikes the scr
The physical therapist Is examining a rehab patient right knee in preparation for fitting them a knee brace. What is the name of the anatomical plane in which this flexion/extension motion occurs
You have been given 4.4584807 g of copper from which you are to fashion a wire whose resistance is 1.2941073 ohms. What will the diameter of the wire be that you fashion
while unloading furniture, a worker slides a heavy box down the ramp on the rope. find the mass of the box