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Rufina [12.5K]
3 years ago
13

Which of the following statements is true? A. X-rays have longer wavelengths than microwaves. B. Radio waves have shorter wavele

ngths that X-rays. C. Gamma rays have longer wavelengths that UV rays. D. Gamma rays have shorter wavelengths than microwaves.
Physics
1 answer:
3241004551 [841]3 years ago
3 0
D is correct, Gamma rays have the shortest wavelength.
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The experiments that claimed to demonstrate cold fusion were found
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A student is trying to calculate the density of a can. He already knows the mass, but he needs to determine the volume as well.
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Answer:

V=Bh

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6 0
3 years ago
Statement A: Area of a rectangle with measured length = 2.536 mm and width = 1.4 mm.
pochemuha

Explanation:

Formula for calculating the area of a  rectangle A = Length *width

For statement A;

Given area of a rectangle with measured length = 2.536 mm and width = 1.4 mm.

Area of the rectangle = 2.536mm * 1.4mm

Area of the rectangle = 3.5504mm²

The rule of significant figures states that we should always convert the answer to the least number of significant figure amount the given value in question. Since 1.4mm has 2 significant figure, hence we will convert our answer to 2 significant figure.

Area of the rectangle = 3.6mm² (to 2sf)

For statement B;

Given area of a rectangle with measured length = 2.536 mm and width = 1.41 mm.

Area of the rectangle = 2.536mm * 1.41mm

Area of the rectangle = 3.57576mm²

Similarly, Since 1.41mm has 3 significant figure compare to 2.536 that has 4sf, hence we will convert our answer to 3 significant figure.

Area of the rectangle = 3.58mm² (to 3sf)

Based on the conversion, it can be seen that 3.6mm²  is greater than 3.58mm², hence the area of rectangle in statement A is greater than the area of the rectangle in statement B.

7 0
3 years ago
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4 0
3 years ago
Which if the following doesn't cause an object to accelrate it's q 4
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B. Constant velocity


6 0
3 years ago
Read 2 more answers
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