An element found in period 4 would have how many energy levels/shells?

A scientist adds different amounts of sugar to 5 bottles of water. He then tests which bottle mice drink out of the most often. What is the dependent variable in this experiment? A. The amount of sugar added to each bottle B.

A sound wave has a frequency of 741 hz in air a wavelength of 0.47m what is the temperature of the air as soon as the below city of sound at 0°C is 235 m/s

State newton's law of universal gravitation

On the seashore, pebbles that are rough and uneven become smooth and rounded. Explain how the become smooth and rounded.

Moving waves can be described either as a function of time or as a function of a. amplitude. b. frequency. c. speed. d. position.

A short term affect of anorexia might include wight loss

True or false / the thermal energy of an object is the total energy of the particles in a material

A bucket of water of mass 16.0kg is suspended by a rope wrapped around a windlass, that is a solid cylinder with diameter 0.350m with mass 11.4kg. The cylinder pivots on a frictionless axle through its center.

Which principle explains how fiber optics can transmit data in the form of light pulses over large distances with little loss in signal strength? total internal reflection the index of refraction the index of reflection total internal refraction

Why is copper a pure substance