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A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 3.00 m/s, and her takeoff point is 1.80 m above the pool.
(a) How long are her feet in the air?
s
(b) What is her highest point above the board?
m
(c) What is her velocity when her feet hit the water?
Some of the first "microscopes" were really single-lens magnifying glasses made by Leeuwenhoek. These devices had magnifications as high as 200.
A 10.0 kg object oscillates at the end of a vertical spring that has a spring constant of 1.90 104 N/m. Calculate the frequency of the dampened oscillation
A radar transmitter contains an LC circuit oscillating at 2.10 1010 Hz. What is the common reactance of the loop and capacitor at resonance
The forward airspeed of an airplane is 75.0 m/s, and an airplane propeller turns at 2400 rpm. What is the maximum possible propeller radius
What is the wavelength of the electromagnetic waves used for cell phone communications in the 900-MHz band?
On a very muddy football field, a 100 linebacker tackles a 75 halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.9 north's and the halfback is sliding with a velocity of 7.9 east's.
Two capacitors C1 and C2 are connected in parallel to one another, Find the equivalent capacitance of the system if the C1, C2, C3 are respectively 4, 6, 3.6 uF respectively
A 13.6 kg object on a horizontal frictionless surface is attached to a spring with k = 519 N/m. find the initial potential energy of the block-spring system
In a 280-turn automobile alternator, the magnetic flux in each turn is ?B = 2.50 multiply.gif 10-4 cos ?t, where ?B is in webers, ? is the angular speed of the alternator, Determine the maximum emf in the alternator
Two radio waves are used in the operation of a cellular telephone. To receive a call, the phone detects the wave emitted at one frequency by the transmitting station or base unit. determine the difference between the two frequencies used in the ope..
A 68kg woman stands on a very light, rigid board that rests on a bathroom scale at each end. She is standing 1.5m from one scale, and, 0.5m from the other. What is the reading on each of the scales.
A cue stick hits a cue ball with an average force of 23.8 N for a duration of 0.0246 s. how fast is it moving after being struck
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