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The objective lens of the refracting telescope at the Lick Observatory in California has a focal length of 57 ft.
What is the refractive power of this lens?
What focal length (mm) eyepiece would give a magnification of 1000x for this telescope?
In the railroad freight yard, an empty freight car of massmrolls along a straight level track at1.0m/s and collides with an initially stationary, What is the speed of the two cars after the collision
A public transportation bus makes the position-time graph over a 5.00 hour interval shown below. What is the average velocity (magnitude and direction) of the bus
An electron and a positron have masses of 9.11 10-31 kg. They collide and both vanish, with only electromagnetic radiation appearing after the collision. determine the energy of the electromagnetic radiation
A golfer tees off from the top of a rise, giving the golf ball an initial velocity of 43 m/s at an angle of 30o above the horizontal. How high is the rise above the fairway
A uniform cylinder of radius R and mass M is mounted so as to rotate freely about a horizontal axis that is parallel to, What is the rotational inertia of the cylinder about the axis of rotation
A person pushes a 19.7-kg shopping cart at a constant velocity for a distance of 21.3 m on a flat horizontal surface. What is the magnitude of the force that the shopper exerts
A hospital nurse walks 25 m to a patient's room at the end of the hall in 0.50 min. She talks with the patient for 4.0 min, What was the nurse's average speed
How much voltage is required to cause possible heart fibrillation in a man, which corresponds to 490 mA of direct current?
A jellyfish is floating in a water-filled aquarium 1.00m behind a flat pane glass of 6.00cm thick and having an index of refraction of 1.50. Where is the image of jellyfish located
The chemical atomic mass of hydrogen, with the two stable isotopes 1H and 2H (deuterium), is 1.00798. Use m(H1) = 1.007825 u, determine the natural abundance of 2H isotope
Three capacitors, C1 = 3.30 µF, C2 = 7.26 µF, and C3 = 1.23 µF, are connected in series, What is the charge on the positive plate of the capacitor C2
How many kilograms of water at 100.0 C could be converted to steam by the addition of 1.13 x 10^7 joules of thermal energy.
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