A roller coaster starts from the top of a hill at rest with a potential energy of 3300 J.

Science requires theories that can be tested by research. true false

Which is an example of acceleration? A. a girl walks two miles per hour north for three hours. B. a boy walks two miles in one hour. C. a girl drives a total distance of 240 miles in just under four hours. D.

Name at least two things that aren't inherited

Use the periodic table to answer the following question. How many valence electrons does magnesium (Mg) have?

When coal is placed into a burner, what type of energy is being supplied to the burner

A trained attack octopus can crawl at a velocity of 0.3m/s. If the octopus crawls towards its victim for 30 seconds, what is the change in position (or distance) that the octopus crawled?

Which profession is responsible for a planes design? A) Aerospace engineering B) Aerospace mechanic C) Pilot D) Flight attendant

Distracted driving laws have been put in place due to scientific studies that have shown the dangers associated with wireless technology. DDT. plastics. vaccines.

An electric circuit consists of a variable resistor connected to a source of constant potential difference. If the resistance of the resistor is doubled, the current through the resistor is (1) halved (3) quartered (2) doubled (4) quadrupled

If it takes 20n to move a box, how much power will be needed to move the box a diatance