Water waves change direction when they encounter water of different depths and begin to move at different wave speeds. This is called

A. reflection

B. constructive interference

C. the Doppler effect

D. refraction

In certain fireworks, potassium nitrate breaks down into potassium oxide, nitrogen, and oxygen. This is an example of a reaction. The opposite process is a reaction. NextReset

On which of the following objects will Earth exert a greater gravitational pull than on a pencil? A. A toothpick B. A piece of paper C. A paper clip D. A stapler

At an outdoor market, a bunch of bananas is set into oscillatory motion with an amplitude of 29.8981 cm on a spring with a spring constant of 19.1461 N/m. The mass of the bananas is 43.288 kg. What is the maximum speed of the bananas

If a force of 12 N is applied to an object with a mass of 2 kg, the object will accelerate at A. 0.17 m/s2. B. 24 m/s2. C. 6 m/s2. D. 12 m/s2.

Which of the following is a good safety precaution when planning a weight training program? Question 5 options: Don't overdo the weight Never lift alone Have a day of rest between workouts All of the above

What's the definition of: • cellular respiration • photosynthesis

What are the steps that are important to take for your safety during an earthquake? a. stay away from walls and windows c. stay away from electrical and gas lines b. get under a desk or table d. all of the above

You have an open air column of length 1.40 m in air at 24.2 °C. What is the frequency of the third harmonic?

Why do we use average force while solving momentum problems? How is net force related to the momentum of the object?

If you had a positive 8 score on the sit-an-reach test you