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On the Apollo 14 mission to the moon, astronaut Alan Shepard hit agolf ball with a 6 iron. The acceleration due to gravity on themoon is 1/6 of its value on earth. Suppose he hits the ball with aspeed of 14.0 m/sat an angle 20.0 ^\circ abovethe horizontal.
a) How much farther did the ball travel on the moon than itwould have on earth?
b) For how much more time was the ball in flight?
copper has 8.5 x 10^28 electrons per cubic meter. if a current of 1.55 A is flowing in the wire, what is the average drift speed of the electrons along the wire
A variable-speed drill, initially turning at 300 rpm, speeds up to 1300 rpm in a time interval of 0.3 s
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
A car traveling on a flat (unbanked), circular track accelerates uniformly from rest with a tangential acceleration of a. determine the coefficient of static friction between the car and the track
Illustrate what is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing? How much work does the tension in the ropes do as the child swings from the initial position to the bottom?
X-rays with a wavelength of 7.02 x 10^-12 m strike a stationary electron and the reflected photon is scattered 75 degrees relative to the incident photon
A laser beam is reflected by a plane mirror. It is observed that the angle between the incident and reflected beams is 22 degrees.If the mirror is now rotated so that the angle of incidence increases by 5.0 degrees, what is the new angle between t..
The nucleus of an atom consists of protons and neutrons (no electrons). A nucleus of a carbon-12 isotope contains six protons and six neutrons.
An unpolarized laser has an average power of .6 mW. At a distance of 10 m it forms a circle with a diameter of 2 mm. Intensity = 5.23 x 10^-4. Erms= .444 v/m. what is the speed of light in the polarizer
A mass-on-a-spring system has a spring constant k =372 N/m and a mass m =0.46 kg. If it is given an initial displacement of0.27 m and then released, what is theinitial potential energy of the oscillator?
Starship Voyager has acquired some really cool propulsion technology that enables it, how much did the population of Earth age during the trip
a spring is compressed by 2cm and launches a block up an incline (ignore friction). what maximum distance will it travel
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