A standing wave is the result of:

refraction

diffraction

reflection

resonance

How much time is needed to push a 5,000 N car 50 meters if you are using a machine with a power of 4,500 W?

An electron moving parallel to a uniform electric field increases its speed from 2.0 * * 1077 m/sm/s to 4.0 * * 1077 m/sm/s over a distance of 1.3 cmcm. What is the electric field strength?

On December 26, 2004, a great earthquake occurred off the coast of Sumatra and triggered immense waves (tsunami) that killed some 200000 people.

Hydroelectric power uses: wind water coal the sun

Which of the following is not a major function of the roots? A. Development of root pressure that drives movement B. Providing a membrane in which osmosis moves water across C. Uptake of nutrients D. Photosynthesis

Hat is a scientific theory? Make up your own scientific theory.

Which of the following is an example of a velocity? O A. 12 m/s O B. 45 km/hr south O C. 55 km/hr D. - 5 m/s2 east

What was the total weight (lbf) of chocolate in the vat? the specific gravity of chocolate is approximately 1.24?

You are in the lab and are given two rods set up so that the top rod is directly above the bottom one. The two straight rods 50-cm long are separated by a distance of 1.5-mm each with 15 A of current passing through them.

What is the explanation for feather beds being warm