Given the two sets, which statement is true?

A = {1, 2}

B = {1, 2, 3, 4}

Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system

Why is gravitational potential energy negative?

Briefly explain what water is. in your explanation include what a water molecule is, what elements makes up water and draw a molecule structure of the water molecule

Unweathered rock that underlies soil is subsoil. True False

Food deteriorated more slowly in a refrigerator because

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