What wave is used reflecting from the ionosphere?

Lord Kelvin's calculations for dating the earth were correct, but his assumption that earth was undergoing radiant cooling from combustion of the sun was incorrect, thus he arrived at an incorrect age of 15-20 million years old. a) true b) false

A business letter style that shows all text aligned to the left side of the page is called a. full block. b. left block. c. justified block. d. modified block.

There is a 12 V potential difference between the positive and negative ends of the jumper cables, which are a short distance apart. An electron at the negative end ready to jump to the positive and has a certain amount of potential energy.

A grasshopper jumps at a 65.0 degree angle at 5.42m/s. At what time does it reach its maximum height?

Calculate the moment of inertia of uniform circular disc of mass 500g, radius 10cm about 1. the diameter of the disc. 2. the axis tangent to the disc parallel to its diameter 3. the axis through the center of the disc and perpendicular to its plane

If you want your investment or savings account to be easily turned into cash without losing its value, you should consider the?

What is the definition of "gravitational potential energy"?

A number of food chains linked together

Inside a stereo speaker, you will find two permanent magnets: one on the cone and one near the cone. True of false?

When a hurricane nears land what causes the most damage