String exerting an average force
An 87.7-g arrow is fired from a bow whose string exerts an average force of 115 N on the arrow over a distance of 75.0 cm. What is the speed of the arrow as it leaves the bow?
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The first person is initially moving forward with a speed of 2.40 m/s, and the second person is initially at rest. What are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and the ice.
If we completely hydrolyzed 0.18 kg of water in a 8.2 L container at 300 K, what would be the total final pressure of the system in atmospheres?
An electric field of 7.80 105 V/m is desired between two parallel plates, each of area 37.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate?
What was the impact of European expansion on the indigenous people of the American, European society, and the new American civilization?
The acceleration of gravity is 9.8 m/s2 .Determine the magnitude of the change in the block's kinetic energy.Determine the change in the block's potential energy.Assumed: The frictional force is constant. Determine the magnitude of the frictional
What is the density of a block of unknown material with a mass of 14.72 g if the dimensions are:
Friction and air resistance are negligible. What speed does the ball have when the cable makes an angle of 30 degrees with respect to the vertical?
A 0.8 kg stone attached to a string is whirled in a horizontal circle of radius .18 as in the figure below. The string makes an angle of 25° with the vertical. Find the tension in the string.
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