Which type of reaction occurrs without being started by some outside force

Mr. Llama walked from his house to the stop sign down the street. He walked two miles to the stop sign and then returned back to his house. What is the distance that he walked? Question 2 options: A. 3 feet B. 2 miles C. 4miles D.

A long straight wire has fixed negative charge with a linear charge density of magnitude 4.6 nC/m. The wire is to be enclosed by a coaxial, thin-walled, nonconducting cylindrical shell of radius 2.2 cm.

When the elevator is mobing upwards but its slowing to a stop at the top floor. what is the direction of the net firce on the rider?

According to Boyle's Law, increasing the pressure of a gas will have which effect on its volume? increase decrease random effect

A friend tells you that a scientific law cannot be changed. State whether or not your friend is correct and then briefly explain your answer.

What is the source of energy for the process of evaporation?

How could you compare the energy carried in two different longitudinal waves

The instantaneous velocity of an object is the blank of the object with a blank

Which of the following best describes the earth's average surface temperature for the past 900,000 years? A. a steady warming trend B. fairly steady temperatures until recently C. prolonged periods of cooling and warming D.

What should you always include in a great summary? (Select all that apply) A. investigation plan B. possible errors C. predictions D. new questions