The orbits of planets being elliptical was one the planetary laws developed by

A. Copernicus.

B. Ptolemy.

C. Kepler.

D. Brahe.

Which of these waves cannot travel in a vacuum? (1 - microwave (2 - light wave (3 - sound wave (4 - electromagnetic wave brainliest for correct!

A pitcher exerts 100.0 N of force on a ball with a velocity of 45 m/s. What is the pitcher's power? A 50.0 kg sailor climbs a 28.3 m rope ladder at an angle of 45 degrees with the mast. How much work did he do? An inclined plane is 5.00 m long and 2.

A cell membrane consists of an inner and outer wall separated by a distance of approximately 10nm. Assume that the walls act like a parallel plate capacitor, each with a charge density of 10?5C/m2, and the outer wall is positively charged.

The current flowing through a lamp is 1.5 A. It is plugged into a 120-V outlet. What is the resistance of the lamp

Understanding the effect of any confounding variables on the dependent variable is important to the outcome of an experiment. T/F

A circuit featuring multiple paths through which current can flow is best classified into which category? A. a series circuit B. an open circuit C. a parallel circuit D. a short circuit

The material that is most difficult to recycle is

1. Which part of an atom has a negative electric charge? A. Protons B. Electrons C. Neutrons D. Both protons and neutrons

What a graph shaped like the one below most likely represents the relationship between volume and

What is the magnetic force (in newtons) on a particle traveling in a 1.5 T magnetic field if q = 7.5 microcoulombs and v = 1.75 * 106 m/s at a 45° angle to the magnetic field? Answer with three signficant digits.