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Questions in physics

[Answered] A proton is ejected from the sun at a speed of \(2 \times 10^6 \, \text{m/s}\). How long does it take for this proton to reach Earth? Answer in hours.

[Answered] A car is moving east at 35 m/s. If it accelerates at 20 m/s² for a period of 22 seconds, what is its final velocity?

[Answered] Must a new substance be formed when you observe a chemical property? Explain.

[Answered] It takes the elevator in a skyscraper 4.5 seconds to reach its cruising speed of 11 m/s. A 70 kg passenger gets aboard on the ground floor. A. What is the passenger's weight before the elevator starts moving? B. What is the passenger's weight while the elevator is speeding up? C. What is the passenger's weight after the elevator reaches its cruising speed?

[Answered] Two cubes are made of silver and have equal edges. One of the cubes is hollow. Explain how to determine the volume of the space in the hollow cube. You may take measurements of the cube, but you may not damage the cube.

[Answered] A train travels at a speed of 30 miles/hour and covers a distance of 240 miles. How long did it take the train to complete its journey?

[Answered] What are the three statements of the cell theory?

[Answered] Find the water pressure at the base of the Hoover Dam if the depth of water behind it is 220 m.

[Answered] Orange Juice - Mass = 18 g - Density = 6 g/mL What is the volume?

[Answered] How far would a skydiver fall during the first minute of free fall?