Projectile & Satellite Motion
What is the maximum range occurs for an ideal launch?
45 degrees
What are the 3 states of matter?
Gas, liquid and solid
What charges attract each other and what repeals?
Attracts: '+' with '-'
Repeals: '+' with '+' & '-' with '-'
True or false: without gravity, a tossed object follows a straight-lined path
True
What are quarks?
Particles that make up a nucleon
Which orbit has work done on it: circular or elliptical
Elliptical
What is an isotope? And give an example.
Atoms of the same element with different numbers of neutrons
Ex: carbon-12, Uranium-235, chlorine-36, etc.
What is a parabola? What changes and what stays constant?
A curved path of a projectile that undergoes acceleration only in the vertical direction, while moving horizontally at a constant speed
Composition of living things include these 5 elements:
1. Oxygen
2. Carbon
3. Hydrogen
4. Nitrogen
5. Calcium
What are Kepler's 3 laws of Planetary Motion?
1. The path of each planet around the Sun is an ellipse with the Sun at one focus
2. The line from the Sun at any planet sweeps out equal areas of space in equal time intervals
3. The square of the orbital period of a planet is directly proportional to the cube of the average distance of the planet from the Sun
What is matter? What is antimatter? And can either of them exist in our environment?
Matter- Composed of atoms with POSITIVE nuclei and NEGATIVE electrons
Antimatter- Composed of atoms with NEGATIVE nuclei and POSITIVE electrons
Both matter and antimatter cannot exist in our environment
What are the 4 fundamental facts about atoms?
1. Every atoms is composed of a '+' charged nucleus surrounded by '-' charged electrons
2. Each of the electrons in any atom has the same quantity of '-' charge & the same mass
3. Protons & neutrons compose the nucleus. Protons are ~ 1800 times more massive than electrons but each one carries an amount of '+' charge = to the '-' charge of electrons. Neutrons have slightly more mass than protons & have no net charge
4. Atoms usually have as many electrons as protons, so the atom has 0 net charge