The number of protons in an atom of an element is that of that element? A. mass number

B. balanced load

C. atomic number

D. Isotope

What does physical education mean

A stone falls from a ledge and takes 8 seconds to hit the ground the stone has an original velocity of 0m/s how tall is the ledge

If you lived on Saturn, which planets would exhibit retrograde motion like that observed for Mars from Earth? (Select all that apply.) 1. Mercury 2. Venus 3. Earth 4. Mars 5. Jupiter 6. Uranus 7. Neptune

The amplitude of the electric field for a certain type of electromagnetic wave is 570 N/C. What is the amplitude of the magnetic field for that wave? (c = 3.00 * 108 m/s)

An 8.00 g bullet is fired into a 250 g block that is initially at rest at the edge of a table of 1.00 m height. The bullet remains in the block, and after the impact the block lands d=2.1 m from the bottom of the table.

What are the arrangement of resistors in series

A pilot flies horizontally at 1300 km/h, at height h! 35 m above initially level ground. However, at time t! 0, the pilot begins to fly over ground sloping upward at angle u! 4.3° (Fig. 2-38).

A helicopter flies 30 km 30 degrees north of east, drops of the supplies to a research team; it then heads 50 degrees north of west traveling 70 km to drop the supplies to a filming crew. What is the resultant displacement of the helicopter?

Plaskett's binary system consists of two stars that revolve in a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see figure below).

Is mercury (the planet) rocky or gaseous (meaning relating to or having the characteristics of a gas.)