Does aliens exist in this world

A man is sitting on a chair. Identify the true scenario from the following options: The man exerts a greater downward force on the chair than the upward force exerted on him by the chair.

What does the force diagram look like for a book at rest on a desk?

When a trebuchet counterweight is hoisted by soldiers, what form of energy is transferred into the machine as work?

A car is moving towards a student at constant speed. The student notices that the sound the car makes gets louder and louder as the car approaches.

Calculate the amount of charge travelling through a car battery when a current of 800.00 A is produced for 1.2 min.

The electric field near the earth's surface has magnitude of about 150n/c. what is the acceleration experienced by an electron near the surface of the earth? express your answer to two significant figures and include the appropriate units.

Minerals are considered to be Answer made out of rocks the building blocks of rocks extremely rare and valuable difficult to find

the solubility product of lead fluoride is 3.6 x 10-8. what is its solubility in 0.10M NaF solution, in grams per liter

A passenger on a bus moving east sees a man standing on a curb. from the passenger's perspective, the man appears to

Which of the following is the best example of a proper hypothesis? Water will flow faster through tightly packed soil than through loosely packed soil. I think there is no effect on hearing if you listen to loud music for only three hours a day.