chemistry
The negatively charged particles in an atom that orbit around the nucleus are called ______ .
electrons
How fast an object is moving, regardless of its direction, is _______ .
speed
what is the shortest wavelength called?
gamma ray
what is our solar system called
the milky way galaxy
What is the atomic number of hydrogen?
1
If two forces act on an object in the same direction, the net force is the
sum of the two forces
what is the longest wavelength called?
radio waves
what type of galaxy is the milky way
a spiral galaxy
What is Cu?
copper
Acceleration refers to:
4. all of the above
Electromagnetic waves that you can see are called:
visible light
where on the milky way galaxy is our solar system loacated
the Orion arm
The atomic number of an atom is determined by the number of _______ .
protons
The rate at which velocity changes over time is known as _______ .
Acceleration
Radioactive materials can cause this type of emission:
gamma rays
what is the least common type of galaxy
an irregular galaxy
Compared to the charge and mass of a proton, an electron has ________ .
opposite charge and same mass
The size or amount of a force is known as its ____.
Net force
What type of waves are used to transmit cellular telephone messages?
radio waves
what galaxy contains the oldest stars
an elliptical galaxy