What is the smallest knid of Electromagnectic Wave?
Atomic Nuclei
100
An object at rest tends to stay at rest, an object in motion tends to stay in motion, unless acted upon by another force. Which Newton law is this?
Newtons first law.
100
What unit would you use for power?
Watts
100
A horse pulls a sleigh with 950J of work. The horse pulls for 120 seconds. How much power did the horse use?
7.91W
100
What will happen if a small metal ball is dropped into a beaker of water?
It will sink to the bottom because of gravity.
200
Between UV-A, UV-B and UV-C rays. Which one is blocked by the o-zone layer?
UV-C
200
For every action force there is an equal and oppisite reaction force. Which newton law is this?
Newtons third law.
200
What unit would you use for KE?
Joules
200
Arnold accidentlly knocked a 6.8kg pumkin off the deck. The pumkin fell 3.8 meters to the ground at a speed of 2.2m/s. How much GPE did the pumkin have before it fell to the ground?
GPE=253.3J
200
What will happen if a drop of liquid food coloring is dropped into a beaker of water?
It will move around in the water because of the molecules that move around.
300
What are the two largest groups of waves?
mechanical waves and electromagnetic waves
300
The acceleration of an object is directlly related to the force of an object. Which newton law is this?
Newtons second law.
300
What units would you use for acceleration?
Meters/seconds squared
300
What is the work done when a 50 N object is lifted 5 meters?
w=250J
300
Does the temperature of the water affect how fast the molecules move?
Yes.
400
What is the speed of a mechanical wave?
1100 feet per second
400
Force=mass*acceleration. What law does this refer to?
Newtons 2 law.
400
What units would you use for GPE?
Joules
400
You must exert a force of a 4.5 N on a book to slide it across a table. If you do 2.7 J of work in the process, how far have you moved the book?
D=0.6meters
400
The molecules in objects at higher temperature ________
move faster
500
What is the speed of electromagnetic waves?
186,000 miles per second
500
If a book is on a table it wont go anywhere unless someone moves it. Which law is this referring to?
Newtons 1st law
500
What units would you use for force?
Newtons
500
A weightlifter raises a barbell with a acceleration of 4m/s^2. He uses 100 N of force to raise the Barbell. What is the mass of the barbell?
mass=25 kg
500
The molecules in objects at lower temperature _____________