PHYSICS HIGH SCHOOL

Which of the following occurs on March 21?a. summer solstice
b. winter solstice
c. vernal equinox
d. autumnal equinox

Answers

Answer 1
Answer: vernal equinox, for spring.
Answer 2
Answer:

Answer:

your answer would be C: vernal equinox

Explanation:

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Related Questions

True or False.. Although the Kinetic Theory of Matter states that the particles that make up all matter are in perpetual motion, we know that this isn’t really correct because solids don’t move.
What is this equation for?
What is the kinetic energy of a 1 kilogram ball is thrown into the air with an initial velocity of 30 m/sec
A 7.5 kg block is placed on a table. If it's bottom surface area is 0.6m2, how much pressure does the block exert on the tabletop? A. 376.5 Pa B. 73.5 Pa C. 226.5 Pa D. 122.5 Pa
A 250 gram ball at the end of a string is revolving uniformly in a circle of radius 0.75 meters.The ball makes 2.0 revolutions per second. What is the centripetal acceleration?

What statement about a wave produced by a doorbell is true?

Answers

a wave produced by a door bell is like a soundwave when something or someone hits it. it makes a sound 

Answer:

propagates in the form of compression and rarefactions

When you decrease the length of the effort arm on a lever which of the following happens to effort force? A. Force will decrease B. Force will increase C. Force will vary D. Force will remain the same.

Answers

The force will increase

Surrounding every moving electron isa. an electric field
b. a magnetic field
c. both a and b
d. none of the above

Answers

The correct statement is:

C. both a and b

What is electromagnetic radiation ?

Every moving electron has an electric field and a magnetic field around it. This is a fundamental tenet of electromagnetic radiation, often known as electromagnetism.

An electron produces both an electric field and a magnetic field while it is moving or accelerating. The electromagnetic waves created by the interaction of these fields and their spread out from the electron.

While the magnetic field interacts with moving charges and magnetic materials, the electric field is in charge of applying electric forces to other charged particles. Together, these fields are fundamental to many phenomena, such as electromagnetic wave transmission, the behavior of charged particles in electric and magnetic fields, and the operation of equipment like motors, generators, and antennas.

So, the correct Option is that both an electric field and a magnetic field surround every moving electron.

Therefore, (Option C) is correct

Learn more about electromagnetic radiation here : brainly.com/question/28954595

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the answer is both a and b

Adding heat to a liquid causes which of the following physical changes?A. increases mass
B. increases density
C. decreases density
D. no physical change

Answers


In almost every case in nature, adding heat to a liquid
causes the density of the liquid to decrease.  That is,
when the liquid gets warmer, it expands and occupies
more space.

The one big exception to this rule is water ! 

Starting with a block of ice at zero°C (32°F), as the ice melts,
becomes water at zero°C, and all the way to 4°C (about 39°F),
its density increases all the way.   That is, it shrinks and occupies
less volume as it goes from ice at zero°C to water at 4°C.

This sounds like an interesting but insignificant quirk ... until
you realize that if water didn't do this, then life on Earth would
be impossible ! 

Placing ice on a sprained ankle this is an example of conduction, convection, radiation?

Answers

Conduction because that’s when energy transfers by two things touching each other

Which of the following is not one of da Vinci's contributions to technology?a. effect of the moon on tides
b. modern theory on the formations of the continents
c. precise observations of human anatomy
d. ideas for space travel

Answers

Answer: Option d: ideas of space travel.

Explanation:

Leonardo da Vinci was an Italian. He had numerous skills in various different fields. Leonardo contributed to technology for the effect of moon on the tides,  his theory on formation of continents, human anatomy, art and much more. But he did not contribute in the ideas for space travel. Hence, the correct option is d.

Answer:D

Explanation:
Other Questions
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Which example involves the transformation of chemical energy directly into light energy? A) a wind mill Reactivate B) a glow stick C) photosynthesis D) a hydroelectric dam
Which of these is most likely to lead directly to a black market?a. a supply shock c. rationing b. a price floor d. equilibrium
A kilowatt-hour (kW-h) must be a unit of _____.A. mass B. force C. power D. energy