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You are watching Olympic athletes practicing archery when you wonder how fast an arrow is shot from a bow. With a flash of insight you remember your physics and see how you can easily determine what you want to know by a simple measurement. You ask one of the archers to pull back her bowstring as far as possible and shoot an arrow horizontally. The arrow strikes the ground at an angle of 86 degrees from the vertical at a distance of 100 feet from the archer. What is the answer to your query?
Assume you have a 1.1 μC point charge. Determine how far in meters from the charge will the potential be 75 Volt if it is zero at infinity
question1two vessels a and b each have n molecules of the same perfect monoatomic gas. firstly the two vessels are
To test the quality of a tennis ball, you drop it onto the floor from a height of 4.66 m. What is its average acceleration during that contact
A solid cylinder of radius 'a' and mass M rolls without slipping down an inclined plane of angle α. Show that the acceleration is constant and equal to a = 2/3 g sin α.
After inverting the tube 100 times, the temperature of the lead shot is found to have increased by 30C
Interestingly, there have been some studies using cadavers to decide the moment of inertia of human body parts by letting them swing as a pendulum about a joint. In one study, the center of gravity of a 5.0 kg lower leg was found to be 18 cm from the..
magnetic resonance imaging needs a magnetic field strength of 1.5 t. the solenoid is 1.8 m long and 75 cm in diameter.
How much mass is lost in the fission of the nuclear fuel in a 1000 MW power plant in one year? (assume that the power plant is 33% efficient)
What is average kinetic energy of each helium atom
a 10 lb sphere 6 inches in diameter and a 10lb hoop 12 inches in diameter roll down a 30 degree slope find the
plan a free-body diagram for the charge.
What uniform magnetic field, applied perpendicular to a beam of electrons moving at 7.30 x 106 m/s, is required to make the electrons travel in a circular arc of radius 0.460 m?
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