How much time would it take for an airplane to reach its destination. If it traveled at an average velocity of 790km/hr east for a distance of 4,700 kilometres

Suppose you bought a cup of coffee each morning on your way to school. You wish to drink the coffee when you reach your class and have time to settle down which is about 30 minutes from the time of purchase.

How do you figure out mechanical energy

The mass of an electron is 9.11 * * 10 -31 -31 kg. 1) How far apart would two electrons have to be in order for the electric force exerted by each on the other to be equal to the weight of an electron?

Suppose you have measured the diffraction pattern of a grating with d = 0.19 mm and have found that the spots were separated by s = 1.8 cm. Now you want to determine d for an unknown grating.

A rocket's acceleration is 6.0 m/s 2. Assuming it starts at 0 m/s, how long will it take for the rocket to reach a velocity of 42 m/s? 250 s 0.14 s 7.0 s 290 s

A block sliding along a horizontal frictionless surface with speed v collides with a spring and compresses it by 2.0 cm. What will be the compression if the same block collides with the spring at a speed of 2v?

How does work get affected when a object is lifted up instead of using a ramp

Choose the correct statement. a. Usually, when one form of energy is converted to another, no energy is wasted. b. The total amount of energy in the universe is gradually decreasing. c. This statement illustrates the first law of thermodynamics. d.

A 10 cm3 block of paraffin (a type of wax) weighs 0. 085 N. It is carefully submerged in a container of gasoline. One cm3 of gasoline weighs 0.0069 N. a. What is the weight of the gasoline displaced by the paraffin? b.

What is a device made by joining two different materials to form a circuit that produces an electric current? a. convertor b. resistor c. semiconductor d. thermocouple