Scientists tracking a flock of ducks found that they fly 740 km south in 12

hrs. What is their speed and velocity?

To practice problem-solving strategy 5.2 dynamics problems. a 30.0-kg box is being pulled across a carpeted floor by a horizontal force of 230 n, against a friction force of 210 n. what is the acceleration of the box

If a windbreak can reduce the speed of wind for distances up to 30 times the height of the trees, how far would these trees reduce the wind speed? 47 m 51 m 470 m 510 m

A research submarine has a 30-cm-diameter window that is 8.6 cm thick. The manufacturer says the window can withstand forces up to 1.2*106 N.

A star that is moving away from an observer has its visible light shifted toward which end of the spectrum? A. blue B. red C. yellow D. white

Anthony and Maelynn are watching a football game outside on a sunny day. Anthony is wearing a black shirt and Maelynn is wearing a white shirt. Which person will be warmer after the game? Explain your answer.

Molecules at room temperature move freely. What happens to the molecules when heat is removed until it freezes? Molecules group together Molecules slow down and contract Molecules speed up and expand Molecules move freely

A spring is used in a lab. It is vibrated at different frequencies and the wavelength is recorded. Using the graph of the data, what is the relationship found between frequency and wavelength? A) Frequency and wavelength are inversely related.

How do you describe the frequency of waves perceived by the observer from the moment the source appears to the moment it disappears?

What causes the stars to appear to move across the night sky?

Two waves collide and the temporary combined waves that results is smaller that the original wave. which term describes this interaction? A. destructive interference B. standing wave formation C. diffraction D. constructive interference