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Neglect air resistance for the following. A soccer ball is kicked from the ground into the air. When the ball is at a height of 12.6 m, its velocity is (5.5 + 4.5) m/s.
(a) To what maximum height will the ball rise?
_________
(b) What horizontal distance will be traveled by the ball?
____________
(c) With what velocity (magnitude and direction) will it hit the ground?
magnitude __________
direction ____________ ° below the horizontal
A flywheel having constant angular acceleration requires 4.6-{rm s} to rotate through 162 rad. Its angular velocity at the end of this time is 100 rad/s. Find out the angular velocity at the beginning of the 4.6s interval; the angular acceleration..
Lightning bolts can carry currents up to approximately 20 kA. We can model such a current as the equivalent of a very long, straight wire. If you were unfortunate enough to be 5.1 m away from such a lightning bolt, how large a magnetic field would y..
A capacitor with air between its plates is charged to 70 V and then disconnected from the battery. What is the dielectric constant of this glass
One fragment, whose speed immediately after the explosion is zero, falls vertically. Illustrate what is the horizontal speed of the other fragment?
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question1reduce equations of motion to an equivalent one-dimensional problem and discuss qualitative nature of the
A high-speed flywheel in a motor is spinning at 450rpm when a power failure suddenly occurs. The flywheel has mass 40.0kg and diameter 80.0cm. At what rate is the flywheel spinning when the power comes back on
A person who weighs 680 N is riding a 98-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 6.45 105 Pa, what is the area of contact between each tire and the ..
Find the work done by this force on the particle.
An irregularly shaped chunk of concrete has a hollow spherical cavity inside. The mass of the chunk is 41.5 kg, What is the radius of the spherical cavity
Measurements with microelectrodes have shown that a 0.30-nm-diameter potassium ion(K+) channel carries a current of 1.8 pA, How many potassium ions pass through if the ion channel opens for 1.0 ms
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