Which law states that the orbit of each planet is elliptical and that the Sun is at one focus of each ellipse? A. Kepler's first law B. Kepler's second law C. Kepler's third law D. Newton's law of universal gravitation

Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health.

A magnetic field line must a. go on forever. b. form a closed loop. c. have a north and south pole. d. be created by a permanent magnet.

Hugs 5 things your dog might do when hugged

What are stars made from

Based on the second law of thermodynamics, how would you expect a system to change over time? A. It would become more organized B. Its randomness would increase C. It would become more efficient D. Its energy would increase

A circuit is built based on the circuit diagram shown. A diagram of a closed circuit with a power source on the left labeled 60 V. There are 3 resistors in parallel, separate paths, connected to it labeled 40 Ohms, 50 Ohms and 30 Ohms.

After harvesting their main crops, such as corn and wheat, many farmers plant a second crop called a cover crop. This cover crop grows during the fall and winter and is then plowed over in the spring. What is the main purpose of a cover crop? A.

A light wave is traveling straight up out of the ocean then moves out into the air how do you expect the movement of the light wave to change the light wave will

To verify that this expression for (vf) α has the correct units of velocity, you need to perform some unit analysis. begin by finding the equivalent of a volt in terms of basic si units.

Which of the following best describes transverse waves