What did the protoplanets become?

a. nebulae

b. planets

c. solar nebulae

d. planetesimals

Are temperature and thermal energy the same thing justify your answer

Which of the following technologies works by emitting high-energy electromagnetic radiation to destroy cells? A. Airport scanner B. Nigh-vision device C. light sensor D. Gamma Knife

What Is The frequency of an X Ray That had A Wavelength of 1.5 * 10^-9

What is different about the different parts of the electromagnetic spectrum

Which global concern is indirectly responsible for all of the others? A) pollution B) deforestation C) resource depletion D) human overpopulation

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.