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Karo-lina-s [1.5K]
3 years ago
12

An object with a temperature of 0 Kelvin would not emit radiation. a. True b. False

Physics
2 answers:
dem82 [27]3 years ago
5 0
That's true. 
Radiation always carries energy. 
An object at 0 K doesn't have any.
kow [346]3 years ago
4 0

Answer: TRUE

Explanation:

this answer is tested by me. i answered true in my quiz and it was correct.

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A 2-kg object is moving 6 m/s in a horizontal direction.
german

Answer: A) O N

Explanation:

An object in motion will maintain its state of motion. The presence of an unbalanced force changes the velocity of the object.

4 0
3 years ago
Which is younger, the rock layers or the fault?
jeka94
<h2>FAULT</h2>

The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts. The fault labeled 'E' cuts through all three sedimentary rock layers (A, B, and C) and also cuts through the intrusion (D). So the fault must be the youngest formation that is seen.

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6 0
3 years ago
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2. An object with a mass of 3.8 kg has four forces acting on it.
marshall27 [118]

Answer:4.7N

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7 0
3 years ago
A certain helium-neon laser pointer, emitting light with a wavelength of 632 nm, has a beam with an intensity of 825 W/m2 and a
BabaBlast [244]

Answer:

N = 1.62 \times 10^{15}

Explanation:

Energy of each photon is given as

E = \frac{hc}{\lambda}

here we will have

\lambda = 632 nm

now we will have

E = \frac{(6.626\times 10^{-34})(3 \times 10^8)}{632 \times 10^{-9}}

E = 3.14 \times 10^{-19} J

now let say there is N number of photons per second

so power due to photons is

P = N(3.14 \times 10^{-19})

now intensity is given as power received per unit area

so we have

I = \frac{P}{A}

825 = \frac{N(3.14 \times 10^{-19})}{\pi (1.40 \times 10^{-3})^2}

825 = N(5.11 \times 10^{-14})

N = 1.62 \times 10^{15}

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3 years ago
What do we call an instrument that makes things look large?
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Is it a magnifying glass?
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3 years ago
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