Substance can undergo physical

change or chemical change?

What is difference between these

two kinds of changes?

What is the name of the device that senses the current flowing, tripping the circuit, and cutting off the electricity?

Why is it important to select a coordinate system when studying motion?

A person standing on a building ledge throws a ball vertically from a launch position 51 m above the ground. It takes 2.0 s for the ball to hit the ground. With what initial speed was the ball thrown? Express your answer with the appropriate units.

More damage is done and more life is endangered in a head-on collision of two cars, each traveling at 30 mph, than in a car crashing into a brick wall at 30 mph because:

What is a Punnett square for a dragon

When you lift a bowling ball with a force of 61.1 N, the ball accelerates upward with an acceleration a. If you lift with a force of 70.9 N, the ball's acceleration is 2.07a. Calculate the weight of the bowling ball.

Because stars are said to have a life cycle, we expect that they will eventually die cease to have an orbit continue to move in circular orbits create living organisim

You're driving down the highway late one night at 20 m/s when a deer steps onto the road 49 m in front of you. You reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 10m/s2. a.

Steam at 700 bar and 600 oC is withdrawn from a steam line and adiabatically expanded to 10 bar at a rate of 2 kg/min. What is the temperature of the steam that was expanded, and what is the rate of entropy generation in this process

Which data set has the largest range? A. 8, 9, 1, 2, 3, 4 B. 5, 6, 4, 5, 6, 4 C. 1, 5, 2, 4, 3, 5 D. 3, 9, 5, 7, 3, 6