A train travelling at 50km/h approaches another train moving towards the first at 90km/h. If they are 35km apart (on a straight track) how long does it take before they meet?

An object is moving to the right in a straight line. The net force acting on the object is also directed to the right, but the magnitude of the force is decreasing with time.

Long ago, it was believed that maggots came from meat. In the late 1600s, Francesco Redi hypothesized that maggots came from flies rather than from meat. Which of these experimental designs could be used to test Redi's hypothesis? A.

Which is more expensive to create coal or solar power

A man is standing at a distance of 2m from a large plane mirror. He moved 1m farther away from the mirror. How far is his Imago now, from him?

List two ways to measure the gravitational potential energy of a ball when it's dropped from different heights.

Four examples of fluids

Which best describes what occurs when a body accelerates?

What is the temperature change in 355 ml of water upon absorption of 34 kj of heat? (the specific heat capacity of water is 4.184 j/g∘c.) express your answer in degrees celsius?

When Cannon and Washburn measured stomach contractions with a balloon, they found that?

Which statement about the atomic nucleus is correct? a. The nucleus is made of protons and neutrons and has a negative charge. b. The nucleus is made of protons and neutrons and has a positive charge. c.