A moving walkway has a speed of 0.4 m/s to the east. A Stationary observer sees a man walking on the walkway with a velocity of 0.3 m/s to the east. What is the man's velocity relative to the moving walkway?

How does dark energy affect the universe?

Which of the following is fact-based science rather than part of a personal belief system?

What subatomic particle has a nuetral charge?

Which describes a relationship based on the general theory of relativity? A. Acceleration in space and magnetism on Earth have opposite effects on objects. B. Acceleration in space and magnetism on Earth have the same effects on objects. C.

Which of the following types of electromagnetic radiation has the shortest frequency? Infrared waves Microwaves Ultraviolet waves X-rays

What happens to the resistance of a filament if it is replaced by a shorter wire?

One group of scientists feel that global warming affects the frequency of hurricanes. Another group of scientists believe that global warming does not affect the frequency of hurricanes, but it makes the average hurricane stronger.

In an experiment, all participants receive a treatment but those in the control group recieves a false treatments

When the volume increased, what happened to the density?

8. Chemical weathering occurs more rapidly in what kind of climates? A. Desertlike B. Cold with high snowfall amounts C. Cool and dry D. Warm with abundant rainfall