PHYSICS HIGH SCHOOL

A 100-meter sprint is a race using only the straight side of a racetrack. A 400-meter sprint is a race that makes one complete lap around a racetrack. Why are velocity and speed the same for a 100-m sprint but not a 400-m sprint?

Answers

Answer 1
Answer: Speed is a scalar quantity (meaning it can be measured using a single number that represents the amount), while velocity is composed of the scalar quantity plus the direction. As the 100-meter sprint only takes place in one direction, the speed and velocity for this is just the same. For the 400-meter sprint however, the direction of your speed changes as you turn for her curved part of the race. Therefore, a direction change is happening. 
Answer 2
Answer:

Sample response on Edu is:

In the 100-m sprint, the displacement is 100 meters and the distance is 100 meters. This means speed and velocity are the same for the 100-m sprint. In the 400-m sprint, the distance is 400-m, but the runners stop at the same place they start so the displacement is zero. Zero displacement means zero velocity.

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Which explains why a gas does not have a fixed shape?The particles have very high speeds.
The particles are not compressible.
The particles are charged.
The particles vibrate.

Answers

The gas particles are compressible and the particles in liquids/solids are very close together and do not easily compress.

Answer:

The particles have very high speeds.

Explanation:

the force between gas molecules is very weak so the molecules are very least bounded to each other.

Due to very less or weak interaction between the molecules the gas molecules can travel easily in the space.

Since the speed of gas molecules are random and the direction of motion is not influenced by the force between the molecules so here the gas can be compressed easily.

Due to this high speed of gas molecules they do not have a finite shape and it will obtain the shape of the container in which it is stored

So correct answer will be

The particles have very high speeds.

Which of the following colors is associated with the lowest temperature? Explain your reasoning.A. Blue
B. Green
C. Yellow
D. Red

Answers

In general, A. Blue is associated with the lowest temperature because the light carries the least amount of energy when emitted, meaning that it can't "heat things up" as quickly. 
Blue is associated with a low temperature.

Develop a mnemonic for branches of physics.

Answers

Answer:

  1. For physics, a common mnemonic is "My Very Earnest Mother Just Served Us Nine Pizzas" to help remember the order of the planets in our solar system (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto).
  2. "SOH CAH TOA" - This helps remember the trigonometric ratios in a right triangle: Sine = Opposite/Hypotenuse, Cosine = Adjacent/Hypotenuse, Tangent = Opposite/Adjacent.
  3. "King Henry Died Drinking Chocolate Milk" - This is used to remember the metric system prefixes in order of magnitude: Kilo, Hecto, Deca, (Base Unit), Deci, Centi, Milli.
  4. "ROY G. BIV" - This helps remember the colors of the visible light spectrum: Red, Orange, Yellow, Green, Blue, Indigo, Violet.
  5. "F = ma" - This equation represents Newton's second law of motion, stating that Force equals mass times acceleration.
  6. "E = mc²" - This equation represents Einstein's theory of relativity, stating that Energy equals mass times the speed of light squared.
  7. "PEMDAS" - This mnemonic helps remember the order of operations in math: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).
  8. "VIRUS" - This helps remember the formula for Ohm's Law: V (Voltage) = I (Current) x R (Resistance) or V = IR.
  9. "KE = 1/2 mv²" - This mnemonic represents the formula for kinetic energy: Kinetic Energy = 1/2 x mass x velocity squared.
  10. "PE = mgh" - This helps remember the formula for gravitational potential energy: Potential Energy = mass x gravitational acceleration x height.
  11. "F = G(m₁m₂/r²)" - This mnemonic represents Newton's law of universal gravitation, where F is the force between two masses, G is the gravitational constant, m₁ and m₂ are the masses, and r is the distance between the centers of the masses.
  12. "P = IV" - This mnemonic helps remember the formula for power in an electrical circuit: Power = Current x Voltage.
  13. "E = hf" - This represents the formula for energy of a photon, where E is energy, h is Planck's constant, and f is the frequency of the electromagnetic wave.

The highest point of a wave is called thea. height.
b. trough.
c. crest.
d. wavelength

Answers

The highest point of a wave is called the "crest." A wave is a disturbance that travels through a medium or space, transferring energy without transporting matter. Therefore, the correct answer is option c.

As a wave propagates, it undergoes cycles of oscillation with alternating high and low points. The highest point of a wave, where the displacement or amplitude is at its maximum, is referred to as the "crest." On the other hand, the term "trough" refers to the lowest point of a wave, where the displacement or amplitude is at its minimum in the negative direction. The trough is the opposite of the crest, representing the bottommost part of a wave.

Learn more about Crest here.

brainly.com/question/10598623

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the answer is c ,  crest

what is conduction, convection and infrared radiation in relation to heat transfers?

Answers

Conduction . . . . .
You put a spoon into a cup of really hot coffee.  After a couple of minutes,
the top of the spoon is too hot to handle.  The spoon CONDUCTED the heat
from the hot liquid up to the other end. 
No material moved. The heat just flowed through the material.

Convection . . . . .
You put a pot of cold water on the stove and turn on the heat.  The flame
heats the water at the bottom of the pot.  The heated water rises from the
bottom, and cold water from the top sinks to the bottom.  Hot fluid rising,
cold fluid sinking, that's CONVECTION.
Material moved, carrying heat from place to place with it.

Radiation . . . . .
-- You come into the house on a cold day, and there's a fireplace burning
across the room.  Looking at the fire, you feel heat on your face, but not on
your back, and the room is still cold.
-- The sun produces a lot of heat. Somehow, it gets to the Earth, although
there's nothing in space to carry it.
-- Heat, light, and radio don't need anything to carry them. They can RADIATE
through empty space, as electromagnetic waves.
When the waves are heat, they're called Infrared waves.

LACECHMI, CEIECTLR, IRITONCF, AREOGLHMET, LCRNEAU, and, ROASL, are all types of energy that can be converted into themal energy?LACECHMI, CEIECTLR,IRITONCF,AREOGLHMET, LCRNEAU, and, ROASL, (can you please help me)

Answers

chemical
electric
friction
geothermal
nuclear
solar
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