Ordinary forces, such as pushes, pulls, normal forces and friction, are considered to be due to the
A)
gravitational force.
B)
electromagnetic force.
C)
strong nuclear force.
D)
weak nuclear force.
E)
contact force.
B
You might also like to view...
A big rip is inevitable in the near future
Indicate whether the statement is true or false
In which wavelength regions is it easiest to identify and study the accretion disk around a white dwarf in a binary system?
A) visible and infrared light B) infrared and radio light C) x-ray and ultraviolet light D) gamma ray and x-ray light E) radio and visible light
Light precedes through three polarizing sheets. Unpolarized light enters the 1st sheet and the resultant vertically polarized beam continues through the 2nd and 3rd
The 2nd sheet has its transmission axis at 50.° with respect to the 1st, and the 3rd is at 70.° with respect to the 1st. (a) What percent of the original intensity emerges from filter #1? (b) What percent of the original intensity emerges from filter #2? (c) What percent of the original intensity emerges from filter #3? (d) If filter #2 has its transmission axis changed to 30.°, what % intensity now emerges from the 3rd filter?
What is the mass of the black hole believed to be at the center of the Milky Way? How do we know?
What will be an ideal response?