Consider the third period of the periodic table. Which element has the smallest atomic radius? A) argon B) scandium C) silicon D) sodium

The most serious effect of radiation on humans is A. it causes us to melt B. the damage it can cause to our DNA C. there are no serious effects of radiation on humans D. the damage it can cause to our ski

The difference in electric potential between a thunder cloud and the ground is 2.08 x 10^8 V. Electrons move from the ground which is at a lower potential to the cloud which is at a higher potential.

If a power source generates 5 W of power for 30 seconds, what's the total energy generated?

How much force (in N) is exerted on one side of an 16.2 cm by 22.9 cm sheet of paper by the atmosphere

This is a device that will convert mechanical, into electrical energy. dre This is a device that converts electrical energy into mechanical energy. dra This is a device that converts solar energy to electricity.

A resistor has a current of 2 amperes when connected to a single battery. If a second identical battery is connected in series with the first, what is the current through the resistor? a) Still 2 amps b) 4 amps c) 1 amp d) no current

Describe some basic guidelines for safe PRE

Why is the liver important in digestion

A building 190 feet tall casts a 30 foot long shadow. if a person stands at the end of the shadow and looks up to the top of the building, what is the angle of the person's eyes to the top of the building (to the nearest hundredth of a degree) ?

The frequency of which type of electromagnetic wave is just higher than that of visible light? A. infrared waves B. gamma rays C. x-rays D. radio waves E. ultraviolet rays