Branches of Physics
Which branch of physics studies the risks and benefits of nuclear power?
radioactivity
How many picometers are in one meter?
10-12
Josh wants to calculate how many miles he runs in a week. On Monday he ran 5 mi. to the library. On Tuesday he ran 2 mi. to the store. Then, he ran an additional 10 mi. the rest of the week. How many total miles did Josh run?
17 mi.
What is an example of a contact force?
Example: Normal force, force applied
Which type of motion describes Earth's movement around its internal axis?
rotational motion
Which branch of physics that studies mirrors, lenses, rainbows, and holograms.
optics
The length of a virus particle is 3.0x10-8 meters, and the length of a bacteria cell is 4.3x10-6. How many times bigger is the bacteria?
1.43x102 times
A motorcycle traveled 750 miles at 70 degrees south of east. How far east did the motorcycle travel?
256.5 Miles East
A bowler determines that they apply a net force of 32 Newtons to a bowling ball. They use a ball that has a mass of 6.4 kilograms. What is the ball's acceleration?
5 m/s2
What force causes you to feel like you are being pushed away from the center of a circle?
centrifugal force
What does modern physics study?
the theory of relativity
Convert 16 m/s to mi./hr.
35.78 mi/hr
A flight attendant walks 1.5 miles per hour down the aisle toward the back of a plane. The plane is traveling at a rate of 550 miles per hour. What is the flight attendant's velocity relative to the ground?
548.5 mph
Which of Newton's laws states that for every action, there is an equal and opposite reaction?
Newton's third law of motion
Determine the angular acceleration of a propeller that accelerates from 800 RPM to 200 RPM in 4 seconds.
-15.71 rad/s2
Identify the explanation of a fact that is completely accepted in the scientific community.
Law
Habib is driving down a mountain road and decelerates from 55 mph to 40 mph in 5 seconds. What is Habib's acceleration?
-3 mi./hr./sec.
A golf ball is hit from a tee at an angle of 15 degrees with an initial velocity of 78.232 m/s. The ball stays in the air for 4.4 seconds. How far does the ball go in the x-direction?
332.5 m
Determine the weight of a 27.2 kg dog on Pluto where the acceleration due to gravity is 0.62 m/s2.
16.9 N
Determine the torque on a 0.35 m long wrench if a force of 960 N is applied at an angle of 70∘.
315.7 N*m
What does the best fit curve do for a set of data?
approximates the data
Describe the appearance of an acceleration (m/s2) vs. time (s) graph that shows an acceleration of 3 m/s2.
Many apply.
A drop of water goes over a 250 m waterfall at a speed of 6.7 m/s. How far does the drop of water travel away from the base of the falls?
47.77 s
The moon does not orbit Earth in a circular path as the distance between these two objects changes. During a micromoon, the moon is at its farthest point to Earth (406,555,000 m). Determine the effects of Earth's gravitational field on the moon at this point, known as the apogee. Earth's mass is 6 x1024 kg.
2.42x10-3 N/kg
Two children are playing on a seesaw trying to balance. If the child on the left sits 2 meters away from the fulcrum and weighs 40 kg, and the child on the right weighs 32 kg, how far away from the pivot point will the child on the right have to sit?
2.5 m