The molecular formula of caffeine if C8H10N4O2. What is the empirical formula?

A worker pushes horizontally on a large crate with a force of 170 N, and the crate is moved 3.6 m. How much work was done

II) Choose the correct answer: 1) Two particles, X and Y, are 4m apart. X has a charge of 2Q and Y has a charge of Q. The force of X on Y: A. has twice the magnitude of the force of Y on X B. has half the magnitude of the force of Y on X C.

A. Your friend strikes a gong across the room from you. How does the gong make a sound? How does the energy of the sound reach you? Why don't you feel a push of air when you hear the sound? Write three or four sentences to state your answers. b.

IF a particular galays has a total mass of 10 to the 59 grams and the average star in that galaxy has a mass of 10 to the 34 grams, approximately how many stars are there in that galaxy?

Why can't we breath under water?

What is three example of technology

Lisa has three classes that each last 50 minutes qhat ia the total nuber of minutes of minutes of the three classe?

Which has a greater speed a heron hat travels 600m in 60 seconds or a duck that travels 60 m in 5 seconds? Explain

A machine shovel moves dirt at the rate of 1,100 pounds of dirt 1 foot in 1 second. How many horsepower is this?

Two descriptions about physical quantities are given below: Quantity A: It is a force. Quantity B: It changes when the object travels from Earth to Earth's moon. What quantities are these most likely describing? A.