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61 Cards in this Set
- Front
- Back
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If you stick your finger in water on a scale, is it more, less or no difference in weight? |
More |
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Jill is walking towards the rear of the train 1/2 m per second respective to the train. The train travels north 10 m/s. How fast will jeff on the ground see jill moving |
9 1/2 m/s |
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Which is true? On a train you throw the ball up and it just goes up Those on the ground see the ball move in an arch |
both true |
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A man jumps out of an airplane, should the man slide on impact in the mud or hit straight down |
Slide in the mud |
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A tractor traveling 75 kph and a baseball player in the tractor throws a baseball forward at 100 kph. How fast is the ball traveling? |
175 kph |
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Approaching the speed of light 75 c. The space ship turns on its light how fast is the light? |
1c |
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He on the road judges two lightening flashes to be the same in front and behind a train car. She on the car judges the one ........ to be first |
in front |
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Does it violate charge conservation? neutron--> anti neutron |
no both neutral |
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Does it violate charge conservation? Electron---->anti proton |
no charge is the same negative to negative |
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Does it violate conservation of baryon number? Neutron-->neutron and electron |
No electron is not a baryon |
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Does it violate conservation of baryon number? Electron-->anti proton |
yes, electron is not a baryon |
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Does it violate lepton conservation? proton-->anti-neutron |
no no leptons |
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Does it violate lepton conservation? Electron--Anti matter electron |
yes 1 and -1 |
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Which is true? When you fall from rest then your linear momentum is not conserved. It increases as you fall OR The linear momentum of you plus the earth is conserved |
Both True |
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Why is linear momentum conserved? between your fall and the earth. |
The laws of nature are the same everyWHERE |
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Mass energy is conserved because |
the laws of nature are the same every time |
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Energy is the capacity of an object to do... Energy is the measurement of an objects destructive ability |
WORK |
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If you are going 40 kph and speed up to 80 kph how much more kinetic energy will you have? |
4 times the amount v^2 x 2 KE=1/2mv^2 |
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GPE=MGH how can you double the GPE? |
double anything |
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Heat can be transferred by three methods. What is the main transfer from a camp fire? |
radiation |
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Fire brigade line passing the water represents |
conduction |
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High Frequency large amplitude sound wave sounds like? |
Loud and high pitch |
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High frequency large amp light wave represents |
light blue |
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Which kind of wave, transverse or longitudinal propagates through a solid? |
Both |
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Which waves travels faster? Longitudinal or transverse? |
Longitudinal |
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Define mechanical waves |
A wave transferring energy through a medium (matter) |
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Which kind of wave propagates through liquid, transverse or longitudinal? |
Longitudinal |
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Which kind of a wave is light? |
Transverse |
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Sound is a longitudinal wave |
longitudinal |
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What occurs when we decrease wave length? |
Higher frequency |
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Spear fishing requires more than just skill with a spear due to the problem of? |
Refraction |
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In a wave what is the term for when peak meets peak? |
constructive interference |
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In a wave what is the term for when trough meets trough? |
constructive interference |
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trough meets peak |
destructive |
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A light source that approaches is shifted- |
blue shifted |
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A floating object is more dense or less dense than water? |
Less dense |
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A man weighs 200 lbs. A woman weighs 100 lbs. The man has 50''2 shoes and the woman has 20''2 shoes. Who causes more pressure? |
The woman |
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You have a thumb tack between the thumb and the fore finger. Does the flat or sharp side have more force |
Its the same |
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You have a thumb tack between the thumb and the fore finger. Does the flat or sharp side have more pressure |
The sharp side |
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What is the buoyant force equal to? |
The weight of the displaced fluid |
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consider a drinking bottle sitting on a table. You have gravity down on the bottle. You have the table pushing up. Where is the net force due to air? |
There is more force up, due to buoyant air force increasing with depth. |
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suppose you place two balls under water of the same volume but different weight. Which has the larger buoyant force? |
They are the same |
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Suppose you place two balls under water of the same weight. wood and metal. Which has the larger buoyant force? |
Wood |
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Relativity. A man on the earth, a woman traveling through space at half the speed of light. He would measure the mass of things in her greater or lesser than she would? |
Greater |
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As the man measures things the woman traveled for 8.4 years. She was traveling 1/2c and proximus centari is 4.2 light years away. will she measure less time? |
yes |
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As he measured it was 4.2 light years. Will she measure it as more or less |
less |
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Conservation laws. Do they describe the results of before and after, or the details of the interaction? |
Results of before and after |
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What are electron light things called? |
Leptons |
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Give an example of a baryon? |
Neutron |
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A space ship traveling at 80%c there is an explosion inside. Each piece flies at 80c forward and back relative to the ship. One who is watching from earth, How fast will they see the pieces moving? |
80c |
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If there is no external torque when a spinning ice skater brings in their arms and legs, What happens to their ANGULAR MOMENTUM |
it is conserved. its the same. Spins faster because VELOCITY changes |
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Does this or does this not correspond to a conserved quantity? Angular momentum. |
Yes |
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Does this or does this not correspond to a conserved quantity? The Atom |
yes classicaly |
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Does this or does this not correspond to a conserved quantity? Baryon number |
yes |
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Does this or does this not correspond to a conserved quantity? Charge |
yes |
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Does this or does this not correspond to a conserved quantity? Lepton Number |
yes |
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Does this or does this not correspond to a conserved quantity? linear momentum |
yes |
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Fast freddie has twice the speed and half the mass of big bob. Who has more linear momentum? If they collide which way will they go? |
They are the same They stop dead |
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Fast freddie has twice the speed and half the mass of big bob. Who has more kinetic energy? |
Fast freddie V^2 |
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What energy changes occur as you slowly lift a ball? |
ChemPE (food energy) goes into GPE |
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Combustion is a process by which CPE is converted into thermal energy |
Combustion is a process by which CPE is converted into thermal energy |
