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A 12 gram ball is dropped form a height of 2.50m and is moving and is moving at 3.2m/s just before it hits the floor. Was energy conserved? If not, how much total mechanical energy was lost in the fall?
question1a 44.0 kg child is in a swing that is attached to ropes 1.90 m long.the acceleration of gravity is 9.81
The temperature of 1.3 kg of water is 34° C. To cool the water, ice at 0° C is added to it. The desired final temperature of the water is 11° C. determine how much mass m of ice should be added
What is an average velocity of the train throughout run
A 1.20 liter flask contains a certain quantity of ideal gas at 305 K. after that an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.30 times its unique value. What is the final temperature.
Electrons are ejected from a metallic surface with speeds ranging up to 4.5 105 m/s when light with a wavelength of ? = 625 nm is used. What is the work function of the surface
A 1.50cm diameter parallel plate capacitor with a spacing of 0.600mm is charged to 400V. What is the total energy stored in the electric field
Two people carry a heavy electric motor by placing it on a light board 2.30m long. One person lifts at one end with a force of 420N , find Where is its center of gravity located
With what minimum speed must you toss a 170g ball straight up to just touch the 12-m-high roof of the gymnasium, With what speed does the ball hit the ground
A spring loaded ballistic pendulum gun requires an increasing force to load. Calculate the speed of the ball as it leaves the gun
Two metal spheres are separated by a distance of 0.8 cm and a power supply maintains a constant potential difference of 850 V, what is the distance between the spheres at this time in nm
A stunt man whose mass is 70 kg swings from the end of a 3.10 m long rope along the arc of a vertical circle. Assume that he starts from rest when the rope is horizontal; find the tensions in the rope that are necessary to make him follow his circ..
A bug crawls outward from the center of a compact disc spinning at 160 revolutions per minute. The coefficient of static friction between bug's sticky feet and disc surface is 1.10.How far does the bug get from the center before slipping.
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