Which of the following machines most likely has the greatest efficiency?

a

A. Airplane

B. Automobile

C. Bicycle

D. Human body

My science fair project is: Texting Versus Talking - Effects of Cell Phones on Reaction time. What should I research?

As your rockets went upwards how would you describe how the energies changed?

How could you increase the number of snowmen destroyed by the sled sliding down the hill? SledAQ1 A. Increase the starting height of the sled. B. Increase the mass of the sled. C. Increase the starting kinetic energy of the sled. D. All of the above.

White light is observed when ___ wavelengths strike the retina.

What term is used to describe a system that loses energy to objects that are not part of the system? a. raised b. low c. open d. closed

What is the purpose of a free body diagram? A. to show the velocity of an object B. to show the acceleration of an object C. to show the forces acting on an object D. to show the direction of motion vectors of an object

An initially uncharged air-filled capacitor is connected to a 5.83 V charging source. As a result, 3.41*10-5 C of charge is transferred from one of the capacitor's plates to the other.

Which objects are inclined planes? Check all that apply. a nail a staircase a seesaw a wheelchair ramp a slide

In a reaction with water, a base will accept a proton from the water; therefore, the water must be acting as an acid. True or False

What are the three properties of gravity