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Cerrena [4.2K]
3 years ago
15

Which of the following best describes the difference between

Physics
1 answer:
Zigmanuir [339]3 years ago
6 0

Answer: An AU equals the distance between Earth and the Sun; a parsec

equals the angle between an object's apparent positions when viewed

from two different locations.

Explanation:

Light year is the distance light travels in one Earth year.  1 light year is equal to 6.3\times 10^4AU.

An astronomical unit  (AU) is the average distance between the earth and the sun.  An AU is approximately 150 million km.

A parsec is the distance at which one astronomical unit subtends an angle of one second of arc.  1 parsec is equal to 20600 AU.

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A person slaps her leg with her hand, bringing her hand to rest in 2.50 milliseconds from an initial speed of 4.00 m/s.
gtnhenbr [62]

Answer:

(a) 2400N

(b) Yes

Explanation:

(a) Mass (m) = 1.5kg, initial speed (v) = 4m/s, time (t) = 2.5milliseconds = 2.5/1000 = 0.0025seconds

F = mv/t = (1.5×4)/0.0025 = 6/0.0025 = 2400N

(b) The force would be different because the mass of the two hands and forearms is 3kg (2 × 1.5kg = 3kg)

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3 years ago
Science, who ever gets this answer will get a brainlest
drek231 [11]
Carbon cycle am pretty sure it that
7 0
3 years ago
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Which term describes the point when two objects reach the same temperature and there is no longer a transfer of energy through h
yaroslaw [1]
The term you need to know is equilibrium. Technically it means that heat gained = heat lost. Normally in beginning chemistry classes the evidence for this condition is a stable temperature. 
5 0
3 years ago
In physics, Ohm's law says that current through a wire, I, is directly proportional to voltage, V, and inversely proportional to
jeka94

Due to Ohm's law, I is proportional to V and 1/R:

I ∝ V

I ∝ 1/R

R is proportional to the wire length L:

R ∝ L

Therefore I is also proportional to 1/L:

I ∝ 1/L

Calculate the scale factor due to increased voltage:

k₁ = 24/12 = 2

Calculate the scale factor due to decreased wire length:

k₂ = 1/(0.5/1) = 2

Multiply the original current by the scale factors to get the new current:

I = I₀k₁k₂

I₀ = 100mA, k₁ = 2, k₂ = 2

I = 100(2)(2)

I = 400mA

3 0
3 years ago
7.2
kenny6666 [7]

Answer:

The kinetic molecular theory of matter asserts that: Matter is made up of particles that are continually moving. All particles contain energy, however the energy fluctuates depending on the temperature the sample of matter is in. This in turn decides whether the material exists in the solid, liquid, or gaseous form.

Explanation:

Hope it helps:)

7 0
3 years ago
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