supposed to vacuum cleaner uses 120 J of electrical energy. If 45 J used to pull air into a vacuum cleaner, how efficient is the vacuum cleaner?

8. The amount of water pressure you experience while swimm your weight the area of the pool. the volume of the water in the pool. how deep you are in the water. Which of the following is NOT

Two billiard balls of equal mass are traveling straight toward each other with the same speed. They meet head-on in an elastic collision.

What is the molarity of a solution that contains 6 moles of solute in 2 liters of solution?

The hypothesis that simple organic molecules could form spontaneously from inorganic molecules in the early Earth's atmosphere was first proposed by Miller and Urey Charles Darwin Watson and Crick Oparin and Haldane

A girl delivering newspapers travels 1 blocks west, 3 blocks north, then 4 blocks east. what is the magnitude of her resultant displacement? answer in units of blocks.

Hot air balloon rises because a) molecules become lighter when heated b) molecules move faster and farther apart when heated c) molecules are less attracted by gravity when heated d) molecules become charged and repel each other when heated

If the diameter of the space station is 730 m, how many revolutions per minute are needed for the "artificial gravity" acceleration to be 9.80m/s2?

A person who has dissociative identity disorder: O A. cannot remember who he or she is. O B. has panic attacks when confronted. C. has two or more distinct personalities OD hears voices

Which force most likely created this mountain? compression gravity sheaning tension

What is the opposition of sublimation?