What was the earliest solar system to exist?

When a water wave runs into you at the beach, what causes you to get knocked down? A. The wave's energy B. Air molecules in front of the wave C. Periodic motion D. Friction

Volume of an block is 5 cm3. If the density of the block is 250 g/cm3, what is the mass of the block?

Newton's third law of motion involves the interactions of a. one object and one force. c. two object and one force. b. one object and two forces. d. two objects and two forces.

SI unit for electrical current

a baseball is travelling (+30 m/s) and is hit by a bat. it leaves the ball travelling (-40 m/s) what is the change in velocity

Show your conversions on the right 8500 mm 2. 250 mg 3. 500000 g 4. 201 = 5. 0.5 Km 6. 350 mm

As one goes from left to right in a period, which of the following is true? A. The number of protons decreases. B. The number of valence electrons increases. C. both A and B D. none of the above

Which phrases describe organisms that formed index fossils

What will happen to plant height if the amount of available light is reduced due to global dimming? Which type of investigation would most likely be conducted to answer the following question?

A machine has an efficiency of 80%. How much work must be done on the machine so to make it do 50,000 J of output work?