Mendeleev noticed that if he organized the elements by atomic weight certain patterns emerged. for instance, elements in the same group (family) appeared to have the same

Which element has the symbol Ar? A. Americium B. Arsenic C. Argon D. Antimony

In the geocentric model which motion would occur?

A particle with a mass of 6.64 * 10-27 kg and a charge of + 3.20 * 10-19 C is accelerated from rest through a potential difference of 2.45 * 106 V. The particle then enters a uniform 1.60-T magnetic field.

What makes the sky blue? a. reyleigh b. the sun c. the atmosphere d. the birds

Color depends on what characteristic of light? a) its frequency b) its amplitude c) both of these

Photons travel outward from a light bulb in

The critical angle for a beam of light passing from water into air is 48.8°. this means that all light rays with an angle of incidence in the water that is greater than 48.8° will be

A basketball is filled with air and has a small hole. Explain why the basketball would leak.

Aligned magnetic domains are only present in which of the following? A) permanent magnets B) temporary magnets C) all magnetic material D) depends on the situation

How are magnetic poles and electrical charges similar