Physics
When does acceleration occurs? (3)
Change in speed
Change in direction
Change in both
The transfer of energy between objects of different temperatures is known ________?
heat
What is the national animal of Puerto Rico?
The coqui frog
Force is anything that changes the movement of an object. (TRUE OR FALSE)
True
What is the deepest place in the ocean?
The Mariana Trench
What is a scalar?
Volume, temperature, distance ordinary numbers used every day.
A cup of water and a cup of ice are both at 0C which one contains more thermal energy?
the liquid water contains more thermal energy because energy was required to melt the ice (latent heat) even both are at the same temperature
It's not expanding into nothing, space itself is expanding
Which country has the large population in the world?
China
How many Spiderman movies are there?
3
They reach the ground at the same time because, although the heavier object has more gravitational force acting on it, it also has more mass, making it harder to accelerate. These two factors balance each other out.
A large bucket of warm water and a small cup of warm water are at the same temperature. Since the bucket contains more thermal energy, why doesn't heat flow from the bucket to the cup?
heat does not flow because both objects have the same temperature, not the amount of thermal energy.
Name one animal that has head and neck but no body.
Snake
What is the capital of Ukraine?
Kyev
Why does light bend toward the normal when it slows down, and what causes that change in direction?
Light bends because one side of the light wave slows before the other side when it enters a new medium. That difference makes the light change direction. If it slows down, it bends toward the normal
A drag racer deploys a parachute and slows down from 130m/s to 45m/s in 3.0 seconds. What is the acceleration of the racer?
-28.3m/s
Explain why an astronaut who has just finished an orbit around the earth has a displacement of 0
The astronaut is back to their original position, so their change in position is 0.
What is the capital of the Dominican Republic?
Santo Domingo
What is the name is Ms. Dimka's daughter?
Lucia
When the speed is positive, when is negative, or when is zero in a graph?
Speed is always positive! Even if a position time graph has a negative slope, the speed is still positive. Only when a graph has a horizontal segment does equal zero.
A driver jumps horizontally off a cliff that is 20m high. They land in the water below exactly 3.0s after jumping. How fast was the diver running horizontally when the left the cliff? Neglect air resistance.
This scenario is physically impossible
A factory machine does 83,720J of work on a tank of water if all the energy is converted into heat, how many kilograms of water can be heated from 22C to 42C?
1kg of water
How many protons, electrons, and neutrons does NaCl have in total? What is its atomic mass?
28P, 30e, 28n
58.44 mass
What is the name of the girl that go with Sesshomaru in "The Inuyasha" show.
Rin