Which of the following accurately describes the differences between the SI and English systems of measurement? A. The two systems are used interchangeably in the scientific and technical communities.

B. The English system is more commonly used in Europe than in the United States.

C. The English system is preferred for use in the scientific and technical communities due to its ease of use over the SI system.

D. The SI system, which is based on the metric system, has been more widely adopted than the English system, which is harder to use.

Answers

Answer 1

Answer: The best answer is D. The SI system, which is based on the metric system, has been more widely adopted than the English system, which is harder to use. In order to standardize measurements, the International System of Units or the SI units are commonly used around the world since they are more easy to understand and compare than the English unit.

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If light travels from oil (slower medium) to water (faster medium) at an angle, what happens to the direction of the light ray in water with respect to normal?A. It moves away from the normal. B. It moves toward the normal. C. It will move along the normal. D. It will move perpendicular to the normal. E. It stops traveling.
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Which explanation of the solar system best fits the observations of the planets and how they orbit the sun? (Points : 3)       The gravity of a large, massive star passing the sun ripped off blobs of material from it that formed the planets.The planets formed at the center of a collapsing spinning cloud of gas and dust.
       The sun and planets formed from a collapsing spinning cloud of gas and dust.
       A comet hit the sun and sent off fragments that became the planets.

Answers

From those choices, the best is the third one. it relates to why the sun and almost everything else in the solar system spins in the same direction, and also why the abundance of various elements in the planets is so different from what it is in the sun.

What is the potential energy of a 2-kilogram potted plant that is on a 1 meter-high plant stand?

Answers

Potential energy is the energy stored by an object due to its position or arrangement.

The potential energy of the potted plant is 19.6 joule.

What is the potential energy?

Potential energy is the energy stored by an object due to its position or arrangement.

It can be given as,

$U=mgh$

Here, $m$ is the mass of the object, $g$ is the gravitational force experienced by the object and $h$ is the height.

Given information-

The mass of the potted plant is 2 kilogram.

The height of the plant stand is 1 meter.

The value of the gravity force is 9.81 meter per second squared on the surface of the earth.

To find the potential energy put the values in the above formula as,

$U=2*9.81*1\nU=19.6$

Hence the potential energy of the potted plant is 19.6 joule.

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Final answer:

The potential energy of a 2-kilogram potted plant on a 1 meter-high plant stand is 19.6 J.

Explanation:

The potential energy of a 2-kilogram potted plant on a 1 meter-high plant stand can be calculated using the gravitational potential energy formula:

PE = mgh

Where:

PE is the potential energy
m is the mass (2 kg)
g is the acceleration due to gravity (9.8 m/s²)
h is the height (1 meter)

Substituting the values into the formula:

PE = (2 kg)(9.8 m/s²)(1 meter) = 19.6 J

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Stars are powered by _____ reactions.
fission
fusion
chemical
electrical

Answers

The star is a ball of hot gasescontaining different kinds of elements at different cores. It has a very hightemperature that radiates all throughout the galaxy. The star has fourmain parts; the core, photosphere, chromospheres and corona. The outer core ofa star located at the chromospheres contains mostly of hydrogen. Inside the hydrogenis helium then carbon, oxygen, neon, magnesium silicon and the inert gas. When astar releases energy it is due to the thermonuclear fusion of hydrogen intohelium. So the answer is fusion.

the answer is fusion

The Coriolis effect is the result of which of the following? A. winds spinning off the equator B. the rotation of the earth on its axis C. the different air movements north and south of the equator D. the friction that slows down winds near the earth’s surface

Answers

The answer is B. the rotation of the earth on its axis.

Coriolis effect is the effect of the Earth's rotation on theoceans and atmosphere. It is the cause of deflection to the right in thenorthern hemisphere and to the left in the southern hemisphere. Thus, in thenorthern hemisphere, gyres spin clockwise, and in the southern hemisphere, gyres spin counter-clockwise.

Answer:

B. the rotation of Earth on its axis

Explanation:

K12

A cubic piece of metal measures 7.50cm on each edge. If the metal is nickel, whose density is 8.90 g/cm3, what is the mass of the cube?

Answers

mass of a cube = density * volume
volume = length of each side ^3
= 7.5*7.5*7.5 = 521.875 cm ^3
therefore mass = 8.90 g/cm3 *521.875 cm3 = 3754.69

This theory suggests that for every big bang, there is a big crunch.oscillating universe theory
inflation theory
steady state theory
big bang theory

Answers

Answer: oscillating universe theory

Explanation:

The oscillating universe theory is a modification of the famous big bang theory.
According to this theory, there are successive cycles of expansion and contraction that occurs in the universe and due to the contraction, the universe gets confined into a very small volume which has a large density.
When the universe gets confined in such a way then, it is said that a 'bounce' will occur and, it would thus oscillate between the big bang and the big crunch.
Thus, this theory states that for every big bang there is a big crunch.

Final answer:

The Oscillating Universe Theory suggests that for every big bang there is a big crunch, imagining the universe as undergoing endless cycles of expansion and contraction.

Explanation:

The theory that suggests that for every big bang, there is a big crunch is known as the oscillating universe theory. This theory proposes that the universe undergoes endless cycles of expansion (Big Bang) and contraction (Big Crunch). It's like a ongoing cosmic heartbeat, where our universe alternatively expands and contracts.

The other three theories mentioned, the inflation theory, the steady state theory, and the big bang theory, each have their own illustrations of the universe's formation. None of them, however, necessarily involve the concept of a big crunch following a big bang.

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