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Q. tom the cat (10kg) is chasing Jerry the mouse across a table surface 2.0m above the floor. Jerry steps out of the way at the last moment, and Tom starts sliding at a speed of 3.0m/s. The coefficient of friction between Tom and the table is 0.25, and he slides 0.5m before reaching the edge.
a)calculate the force of kinetic energy acting on Tom
b)calculate the speed at which Tom leaves the edge of the table
c)calculate the distance from the edge of the table where Tom hits the floor
An asteroid is discovered heading straight toward Earth at 13km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 mins, after which the asteroid is moving at 28 degrees to its original path at a..
A rectanbular tank is placed on wheels and is given a constant horizontal acceleration a. display that, at steady state, the angle made by the free surface with the horizontal is given by tan(delta)=a/g.
Sally travels by car from one city to another. She drives for 24 min at 63.0 km/h, 52.0 min at 42.0 km/h, and 18.0 min at 81.0 km/h, and she spends 5 min eating lunch and buying gas.
Find out an acceleration of mass and tension in the string
An oil drop carries one excess electron and weighs 9.2 10-15 N. What electric field strength is necessary to suspend drop so it is motionless.
A 0.390 kg iron horseshoe that is initially at 745 °C is dropped into a bucket containing 24 kg of water at 46 °C. What is the final equilibrium temperature? Overlook any heat transfer to or from the surroundings.
What is a quantum well: give an example of structure, growth method to make quantum wells and quantum states i.e. outline quantization using diagrams
suppose that r2/r1 = 10.0 cm and ignoring any air inside the shell, find the temperature of the outer surface of the shell.
An airplane is flying in a horizontal circle at a speed of 100 m/s. The 80.0-kg pilot does not want her radial acceleration to exceed 7g. (a) What is the least radius of the circular path? (b) At this radius, what is the force causing the centripe..
Two charged spheres are 8.45cm apart. They are moved, and the force on each of them is found to have been tripled. How far apart are they now.
A 1348 kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 13.6 s, then the motor stops. The rocket altitude 29.6 s after launch is 2091 m. You can avoid any effects of air resistance. What was the rock..
An electron is accelerated by a 4.5 kV potential difference. How strong a magnetic field must be experienced by the electron if its path is a circle of radius 5 cm.
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