It's Morbin' Time
Who has arrived to class the latest?
Milly
Name three things you should never do in a lab report.
write "In this experiment", use present tense, say I or We, discuss human error, use a bar graph
A box is pushed a distance of 10m by a horizontal force of strength 4N. What was the work done by the 4N force?
W = Fd = 40 J
Give two reasons for why boxes are used in example problems in mechanics.
Edward Bouchet was the first African-American to earn what from an American university.
a Ph-D in physics
Who has left class the earliest?
Who writes the longest lab reports?
L-J
Mechanical energy is comprised of what two forms of work?
Potential and Kinetic
A car is at rest on an incline. Name all the forces acting on it.
gravity, normal, friction
Persian Islamic polymath Ibn Sīnā published his theory of motion in The Book of Healing. He said that a force is imparted to a projectile by the thrower, and viewed it as persistent, requiring external forces such as air resistance to dissipate it. Which of Newton's Laws does this describe?
1st
How does Paul make it through class?
coffee
Name all of the labs you wrote a lab report for.
measuring g/terminal velocity, friction/spring, ballistic pendulum x2, pendulum, rotten egg
A ball is dropped from a height of 10 m. What is its final velocity?
14 m/s
What energy conversion occurs in a car?
Chemical - Mechanical
In the 7th century, Indian astronomer Brahmagupta spoke of what as an attractive force.
gravity
Who was the only one who never hit the tree with an egg?
Rose
What device used every day in physics class never has mechanical error?
A donkey pulls a crate up a rough, inclined plane at constant speed. Which one of the following statements concerning this situation is false?
a) The work done by gravity is increasing.
b) The net work done by all the forces acting on the crate is zero joules.
c) The work done on the crate by the normal force of the plane is zero joules.
d) The donkey does "positive" work in pulling the crate up the incline.
e) The work done on the object by gravity is zero joules.
E - work done by gravity is not zero
Is it easier to move a car/box from rest or once it is already in motion and why?
In Egyptian Moscow papyrus (c. 1820 BC) formulas for volume and area are calculated. Though some are only approximately true, and they are not derived by deductive reasoning. This is the first known use of what?
Calculus based physics
What is the best thing to neglect in physics?
Friction
What was the biggest source of error in the pendulum lab?
torque
A 60 W lightbulb is left on for 60 s. What is the work done to power the light?
3600 J
What is the most aerodynamic shape?
teardrop
Who first discovered Pythagorean Theorem?
The Babylonians