What did the protoplanets become?

a. nebulae

b. planets

c. solar nebulae

d. planetesimals

Describe how community leaders can use science to make decisions that benefit society.

A mysterious rocket-propelled object of mass 45.0 kg is initially at rest in the middle of the horizontal, friction-less surface of an ice covered lake. Then a force directed east and with magnitude F (t) = (16.8 N/s) t is applied.

A body of mass m=1kg is moving straight-line and its path as a function of time is given by the following function: s = A - Bt+Ct - Dr, here C=10m/s2 and D=1m/s3 are some constants.

Identify a necessary part of the process by which legal immigrants become citizens.

Which of these would have a volume equal to about 2 cm³? A. 2 grains of rice B. a pair of turtle doves C. 2 African elephants D. a pair of dice from a board game

Calculate the speed of a wave on a guitar string which has a mass of 55 g and a length of 30 cm if the tension in the string is 200 N

During a free fall Swati was accelerating at - 9.8m/s2. After 120 seconds how far did she travel? Use the formula = 1/2 * t2 to solve your answer. (Do not forget to keep units in your answer.)

How do sinkholes form?

What is the result of wave motion on water particles? A.) Water particles are pushed forward as they move up and down. B.) Water particles barely move forward as they move up and down. C.) Water particles are pushed down as they move side to side. D.

Nitric acid (HNO3) and potassium hydroxide (KOH) combine in a neutralization reaction to form water and a salt. Which of the following correctly identifies the salt that is produced? OHK NOK2 KNO3 HOH