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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?
in a particular region of the earth's atmosphere, the electric field above the earth's surface has been measured to be 153 N/C downward at an altitude of 241m, Calculate the volume charge density of the atmosphere
An insulated Thermos contains 110cm3 of hot coffee at 90 °C. You put a 12g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Care for the coffee as thoug..
A boat is pulled by two locomotives through a canal of length 2.04 km, What is the net work done on the boat by the two locomotives
The weight of passengers on a roller coaster increases by 52% as the car goes through a dip with a 35m radius of curvature. What is the car's speed at the bottom of the dip
How much energy is stored by the electric field between two square plates, 6.0cm on a side, separated by a 1.0mm air gap
A 13g rifle bullet traveling 150m/s buries itself in a 3.7 kg pendulum hanging on a 2.9 m long string, which makes the pendulum swing upward in an arc. Resolve the horizontal component of the pendulum's maximum displacement.
If the bullet leaves the gun at a speed of 280 m/s, by how much will it miss the target.
The speed limit for both roads is 35 mi/h, and the driver of the northward-moving vehicle claims he was within the speed limit when the collision occurred.
A gas is allowed to expand isothermally until it reaches its final volume and its pressure is 2.97 atm. Find the heat absorbed by the gas during this process
A 1.02 liter flask contains a certain quantity of ideal gas at 315 K. Then an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.60 times its original value. What is a final temperature.
When a potential difference of 12 V is applied to a wire 6.8 m long and 0.26 mm in diameter the result is an electric current of 3.0 A. What is the resistivity of the wire
A gymnast is performing a floor routine. In a tumbling run she spins through the air, How much time does this maneuver take
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