When starting a heavy train, why will train engineers sometimes back up, stop, and then proceed forward? (This technique is called "bunching slack.")

Obesity refers to gradual weight gain as a person grows older

Explain whether an editorial article in a newspaper, expressing the views of the editor, should be classified as a valid source of information.

When one end of a short metal bar is heated the opposite end will eventually become hot. which of the following process transfers the heat through the bar A conduction B radiation C convection D condensation

Which of the following situations demonstrates balanced forces? A. a child on a moving seesaw B. a car driving on a straight freeway at 60 miles per hour C. a clock's pendulum in motion D. a rock thrown upward, being acted on by gravity

What causes a spring tide?

At what temperature did the substance in the test tube into a solid?

What occurs when the velocity of Earth is doubled? a. The orbit of Earth around the Sun becomes smaller b. The orbit of Earth does not change c. The Earth escapes the Sun d. The orbit becomes more elliptical

When is a body said to be at rest

27. Calculate the impulse when an average force of 10 N acts on a cart for 5.0 s.

A boy on a bicycle is resting at the top of a hill then he rides his bicycle down the hill describe how the boy potential and kineti energy differ at the top middle and bottom of the him