Why is stepping on a can considered a physical change?

A 12N force is applied to a 3kg box to accelerate it from rest to 3.4m/s. How long was the force applied?

A primitive air-conditioning unit for the use in places where electrical power is unavailable can be made by hanging up strips of linen soaked in water. the evaporation of the water cools the air. calculate the heat required to evaporate 5.

Electromagnetic energy travels inselect one: a. long stringsb. short stringsc. burstsd. waves

If a conductive part is connected to ground or to a conductive body that extends a ground connection it is?.

Your bedroom has a rectangular shape and you want to measure its size. You use a tape that is precise to 0.001 m and find that the shortest wall in the room is 3.547 m long.

12. Which of these describes the gravitational force from a planet?" O large and pulls objects toward itself small and pulls objects toward itself O small and pushes objects away from itself O large and pushes objects away from itself

In a laundromat, during the spin-dry cycle of a washer, the rotating tub goes from rest to its maximum angular speed of 4.7 rev/s in 8.3 s. You lift the lid of the washer and notice that the tub decelerates and comes to a stop in 17.5 s.

5. While a gas does 500J of work on its surroundings, 800J of heat is added to the gas. The mass of the gas is 300 grams, specific heat capacity is 1000 Joules/kg and the work is done keeping pressure constant.

A transparent film laminated to a fabric is identified in the study material as a. stretch fabric. b. PVC. c. a skin. d. two-faced fabric

Light from the sun travels through space to Earth's atmosphere. Which will light waves do when they move from empty space into matter made up of different gases? A. move at the same speed B. move faster as they transmit C. slow down and refract D.