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The 1st man to orbit the Earth was Soviet cosmonaut Yuri Gagarin, on April 12, 1961. His spacecraft, Vostok I, was a sphere about 2.3 m in diameter, and it reached a maximum altitude above Earth's surface of 327 km. What was the spacecraft's speed at this point in its orbit?
A Two balloons of identical volume (radius 11.5 m) are filled with gas. The first with helium, the second with hydrogen (H2) gas. What is the lift created by each one
Two 29.0%u2212cm -focal-length converging lenses are placed 14.0cm apart. An object is placed 39.0cm in front of one lens. Where will the final image formed by the second lens be located
A sailboat on the ocean has a mast of height 18.5 m. When viewed through a pair of binoculars the mast has an angular size of 0.065 rad. compute the distance between the observer and the sailboat
The sunlight reaching the earth has a maximum electric field 810 V/m. compute the maximum magnetic field associated with it.
As the temperature of ice is increased, it changes first into a liquid and then into a vapor. How might one produce liquid carbon dioxide
A 1348 kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 13.6 s, then the motor stops. The rocket altitude 29.6 s after launch is 2091 m. You can avoid any effects of air resistance. What was the rock..
A long solenoid with 10.0 turns/cm and a radius of 7.00 cm carries a current of 20.0 mA. What is the magnitude of the magnetic field there
A closely wound rectangular coil of 95.0 turns has dimensions of 21.0cm by 48.0cm. What is the average emf induced in the coil
In the quark model of fundamental particles, a proton is composed of three quarks: two "up" quarks, each having charge +2e/3, and one "down" quark, having charge -e/3. Suppose that the three quarks are equidistant from one another. Take the distance ..
A uniform electric field exists in the region between two oppositely charged plane parallel plates, find speed of electron when it strikes second plate
An object-spring system oscillates with an amplitude of 3.4 cm. If the spring constant is 210 N/m and object has a mass of 0.50 kg, obtain the maximum acceleration of the object
The maximum strength of the earth's magnetic field is about 7.0 x 10-5 T near the south magnetic pole. What is the minimum number of turns (area per turn = 0.021 m2) that the coil must have to produce an rms voltage of 170 V
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