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An astronomical telescope is designed with an overall magnification of 80x. The objective has a focal length of 98.0 cm.
What should be the focal length of the eyepiece?
How far should the eyepiece be from the objective?
An ideal gas has a pressure of 2.5 atm, a volume of 1.0L at at temperature of 30 degrees Celcius. How many molecules are there in the gas
In a science museum, a 130kg brass pendulum bob swings at the end of a 13.7m -long wire. how many oscillations will the pendulum have completed
The aorta is a major artery, rising upward from the left ventricle of the heart and curving down to carry blood to the abdomen, what is the magnitude (in m/s2) of the blood's centripetal acceleration
A car is traveling along a straight road at a velocity of +27.6 m/s when its engine cuts out. For the next 1.40 seconds, Find the velocity of the car at the end of the initial 1.40-second interval
A circuit consists of an ideal ac generator, a 25 µF capacitor, and an 90? resistor, all connected in series. Find the average power supplied by the generator
The Earth is constantly being bombarded by cosmic rays, which consist mostly of protons. Assume that these protons are incident on the Earth's atmosphere from all directions at a rate of 1090. protons per square meter per second.
As a baseball is being thrown, it goes from 0.0 to 40.0 m/s in 0.17 s. What is the acceleration of the baseball
Tension is maintained in a string. The observed wave speed is 25 m/s when the suspended mass is 3.0 kg. (a) What is the mass per unit length of the string? (b) What is the wave speed when the suspended mass is 1.7 kg?
Find the work function of the emitting surface and the wavelength of the second source. Determine the net work done on the piano.
A 1.6kg , 20-cm-diameter turntable rotates at 50rpm on frictionless bearings. What is the turntable's angular velocity, in rpm, just after this event
A spherical capacitor of inner radius 10 cm stores 10nC of charge when charged with 10V. Find s capacitance, its outer radius and the volume between the two spheres
A cylinder of mass 8.0 kg rolls without slipping on a horizontal surface. At a certain instant its center of mass has a speed of 11.0 m/s. Determine the translational kinetic energy of its center of mass
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