Which of the following measures the total kinetic energy of the particles in a substance?

A. mass

B. entropy

C. enthalpy

D. temperature

How can pieces of rock in contact with a stream bed move?

Make a prediction based on your understanding of the cause-and-effect relationship between environment and trait: what happens when an environmental change is too extreme for the population of organisms to adapt?

What is weightlessness?

Which of the following is not true of mutations? A. Mutations can't result in a change in appearance. B. A mutation is permanent. C. Mutations can be passed from parent to child.

A 1100 kgkg safe is 2.4 mm above a heavy-duty spring when the rope holding the safe breaks. The safe hits the spring and compresses it 52 cm. What is the spring constant of the spring?

A merry-go-round rotates with a centripetal acceleration of 15 m/s2. If the outer horses are 7 m from the center of the ride, what is their velocity? O A. 11.8 m/s O B. 10.2 m/s O O C. 9.6 m/s D. 8.4 m/s

Which is not a part of the walking mechanism of the human body? a rigid bar a fulcrum a resistance a gear

Based on the periodic table above, which of the following elements is a metal?

Car crosses the first third of the road with unknown speed and the rest of the road with the speed of 50 km/h. What is the the speed in the first third if the average speed of a car is 30km/h?

1. A car speeds up from 10.0 m/s to 45.0 m/s in 4.0 s. What is its acceleration? In your response, show your work, the given and unknown quantities, the equation, and any necessary algebra.