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Q. Is the kinetic energy of the bullet-bob system immediately after the collision greater than, less than, or the same as the kinetic energy of the system just before the collision?
Q. A ball rolls horizontally off the edge of a tabletop that is 0.72 m high. It strikes the floor 2.80 m away from the edge of the table. What is the initial (horizontal) velocity of the ball? Ignore air resistance.
What minimumdistance are they from each other? The angle may be too large to use small angle approximation. suppose in units of m.
Find the angle with respect to the ground
What is the number of conduction electrons. A centrifuge rotor has a moment of inertia of 3.40 x10-2 kg·m2. How much energy is required to bring it from rest to 8000 rpm.
determine the time the inhabitants of alpha station. A woman who weighs 600N at earth's surface stands on top of a very tall ladder so she is one earth radius above earth's surface. how much does she weigh.
in what direction must storm now sail to reach. The car is uniformly accelerated during the entire time. What net force is exerted on it.
A cube of ice is taken from the freezer at -8.0°C and placed in a 97 g aluminium calorimeter filled with 286 g of water at room temperature of 20°C. The final situation is observed to be all water at 19°C. What was the mass of the ice cube.
On a workday an average decibel level of the busy street is 89 dB, with 100 cars passing a given point every minute. If the number of cars is reduced to 30 every minute on a weekend, what is the decibel level of street.
How long would it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation change is 324.
A rubber ball is bouncing along the lever floor. after each bounce it only goes back up to half of the height that it just fell from. make a proportional sketch displaying this ball bouncing six times.
A third listener is positioned along the positive y-axis. What is her y-coordinate if same wave front reaches her at the same instant it does the first two listeners.
Distance between focal plane and lens
A luge and its rider, with a total mass of 104 kg, emerges from a downhill track onto a horizontal straight track with the initial speed of 53 m/s. suppose they stop with the constant deceleration of 2.30 m/s2.
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