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A .120 kg child is standing at rest on a frozen pond. The child throws a 1.5 kg block initially at rest on a level frictionless surface. What is the speed by which the glob-block combination will move immediately after the collision?
Calculate the smallest number of whole logs (density, p, = 725kg/m3, radius = 0.0800 m, length = 3.00 m) that can be used to create a raft that will carry four persons
The electric field intensity between two parallel plates separated by 25mm is 8000 N/C. How much work is done by the electric field in moving a -2uC charge from the negative plate to the positive plate?
What is the final velocity of a hoop that rolls without slipping down a 6.50 m high hill, starting from rest
oppositely charged parallel plates are separated by 4.67 mm. a potential difference of 600 v exists between the
The acceleration of gravity on the surface of Mars is known to beabout 1/3 the acceleration of gravity on the Earth. find the mass ofMars in terms of the mass of the Earth
a block is on a horizontal surface a shake table that is moving back and forth horizontally with simple harmonic motion
Calculate the rotational inertia of a meter stick, with mass 0.83 kg, about an axis perpendicular to the stick and located at the 44 cm mark
An astronaut is traveling in a space vehicle that has a speed of0.455crelative to Earth. The astronaut measures his pulse rate at69.5per minute. What pulse rate does the Earth observer measure
Three resistors are connected in a system. A 40 ohm and 24 ohm resistor are connected in parallel and the 18 ohm resistor is connected in series with the parallel. Determine the total current delivered by the voltage source
A child is walking along the sidewalk at a constant speed of 1 m/s while pulling his dog sitting in a wagon. what is the frictional force exerted by the wagon on the dog
a major-league pitcher can throw a baseball in excess of 45.7 ms. if a ball is thrown horizontally at this speed how
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 25 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 35 cm.
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