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A 45.7-g golf ball is driven from the tee with an initial speed of 50.1 m/s and rises to a height of 23.3 m.
(a) Neglect air resistance and determine the kinetic energy of the ball at its highest point.
(b) What is its speed when it is 6.97 m below its highest point?
An electric dipole consists of charges +2e and -2e separated by 0.78nm. It is in an electric field of strength 3.4 x 106 N/C. Calculate the magnitude of the torque on the dipole
A parallel-plate capacitor in air has a plate separation of 1.35 cm and a plate area of 25.0 cm2. Determine the charge on the plates before and after immersion
A butterfly at eye level is 26 cm in front of a plane mirror. You are behind the butterfly, 48 cm from the mirror. What is the distance between your eye and the image of butterfly in the mirror.
Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, find the oxygen concentration at the interior end of the tube
Using energy considerations, compute the average force the beam exerts on the pile driver while the pile driver is brought to rest.
The automobile afterwards undergoes a uniform acceleration of -4 m/s2 because of a red light and comes to rest. It remains at rest for 54.6s and next accelerates back to a speed of 25.6m/s at a rate of 2.85m/s2.
A fancy sports car moves past an observer on a corner at a speed of 0.5c. what time interval will be shown on the driver's watch
Starting from rest, a 98 kg firefighter slides down a fire pole. The average frictional force exerted on him by the pole has a magnitude of 800N, and his speed at the bottom of the pole is 3.2 m/s. How far did he slide down the pole.
Imagine holding the above plastic block under water. When released, what is the upward acceleration of the block
a 200kg ball is shot from a 2200kg cannon horizontally and positivly at 200m/s. what is the cannons speed, in respect of Earth
Consider a car undergoing these two displacements: D1 (3 km, 4 km) and D2 (4km, -3 km). how far will the car then be from its starting point
Old MacDonald had a farm, and on that farm he had a gate (see below). The gate is 3m wide and 1.8m high, with hinges attached to the top and bottom. The guy wire makes an angle of 300 with the top of the gate and is tightened by a turn buckle to a..
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