Why are most cells 70 percent water?

What features should you look for in a crash helmet, and why?

A note on a piano vibrates 262 times per second. What is the period of the wave?

What is the wavelength of an earthquake wave if it has a speed of 9 km/s and a frequency of 15 Hz?

Fossils allow scientists to determine when and for how long a certain species lived. What can scientists deduce from this discovery? A. earth's life has changed over time B. which fossils are heavier C. the food sources that were available D.

the skate shop owner wants 30 percent of each order to include longboards. he wants to know how many longboards to order out of 50 skateboards

What experimental term is it when a ruler is dropped to the floor?

Where is most of the energy from incoming waves focused? A. spit B. headland C. underwater D. barrier beach

Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that there is a newly discovered planetary system with three planets.

A car with a mass 1200 kg accelerates at 1.89 m/s2. What is the total force exerted by the car on the road (answer in N to two decimal places) ?

How Long will it take a plane flying north from Miami to reach New York City 1800 km away if the average velocity of the plane is 940 km/h