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A stargazer has an astronomical telescope with an objective whose focal length is 185 cm and an eyepiece whose focal length is 1.20 cm. He wants to increase the angular magnification of a galaxy under view by replacing the telescope's eyepiece. Once the eyepiece is replaced, the barrel of the telescope must be adjusted to bring the galaxy back into focus. If the barrel can only be shortened by 0.40 cm from its current length, what is the best angular magnification the stargazer will be able to achieve?
Illustrate what is its average acceleration during a stop from that velocity? Express your answer in m/s2. Consider the car's initial velocity to be a positive quantity.
Two cars are traveling along a straight road. Car A maintains a constant velocity of 110 km/h and car B maintains a constant speed of 110 km/h. At t= 0, car B is 45 km behind car A. How far would car A travel from t = 0, before it is overtaken by c..
This procedure has actually been used to "weigh" astronauts in space. A 42.5- chair is attached to a spring and allowed to oscillate. What is the mass of the person
q1. a race car has a mass of 718 kg. it starts from rest and travels 45.0 m in 3.0 s. the car is uniformly accelerated
Zinc has a work function of 4.30eV. What is the longest wavelength of light that will release an electron from a zinc surface, What is the maximum possible speed of the electron
A ball dropped from 50 cm rebounds to a height of 33cm. Find the fraction of the original energy lost
An unknown capacitor is charged by a 100-V source through a 1 M? resistor. determine the capacitance of the capacitor
Two coils of wire are placed close together. Initially, a current of 2.3 A exists in one of the coils, What is the mutual inductance of the two-coil system
a double-slit arrangment prduce bright interference fringrs that are seprated by 2.60 mm when the wavelengt is 589nm. what is the bright fringe separation
A sailor drops a wrench from the top of a sailboat's vertical mast while the boat is moving rapidly and steadily straight forward. Where will the wrench hit the deck
Several ice cubes (pi = 0.9167 g/cm3) of total volume Vi = 240 cm3, Calculate the amount of heat energy Qm in J needed to melt the ice cubes (Lf = 334 kJ/kg)
What electric potential energy will a fourth charge q4 = 4mC and located at the origin with respect to the other three charges experience and what is the pendulums period for small angle oscillations?
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