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Questions in physics

[Answered] If I'm given the applied force of an object, the normal force, and the acceleration, how do I find the mass?

[Answered] A car accelerates uniformly from rest to a speed of [tex]$23.7 \, \text{km/h}$[/tex] in 6.5 seconds. Find the distance the car travels during this time.

[Answered] What is meant by the frequency of a wave? What is the unit?

[Answered] A stone is dropped from a bridge 45 meters above the surface of a river. It takes the stone 4.6 seconds to reach the water's surface. Find the average velocity of the falling stone.

[Answered] A tennis ball is thrown vertically upward with an initial velocity of 8.0 m/s. a) What will be its velocity when it returns to its starting point? b) How long will it take to reach its starting point?

[Answered] The speed of a car is decreased uniformly from 30 meters per second to 10 meters per second in 4.0 seconds. What was the car's acceleration?

[Answered] A driver starts his parked car and within 5 seconds reaches a speed of 60 km/h as he travels east. What is his acceleration?

[Answered] What is the reason behind the high surface tension of water?

[Answered] Match each term to its correct definition: A) Protostar - A hot cloud of gas not quite hot enough for nuclear reactions. B) Shell of gas - Gas thrown off by a star when it finishes its red giant stage. C) Nebula - Cloud of dust and gas. D) Main sequence star - A stable star using hydrogen in fusion reactions. E) White dwarf - A small cooling star in which fusion reactions have finished. F) Red giant - A star that has used up most of its hydrogen and expanded greatly. Then, arrange the names in the correct order.

[Answered] What is electrostatic repulsion?