The human understanding of the cosmos beyond Earth has grown after inventing specialized equipment such as x-ray telescopes.
<h3>What is
x-ray telescopes?</h3>
X-ray telescope, a device made to find and focus X-rays from sources beyond the atmosphere of Earth.
Some key features regarding the x-ray telescope are-
- X-ray telescopes have to be launched into orbit outside of the atmosphere or propelled to great heights by rockets and balloons due to atmospheric absorption.
- While telescopes carried aloft using rockets or satellites serve to detect softer radiation, balloon-borne telescopes may catch the more piercing (harder) X-rays.
- That sort of telescope must have a completely different design from a typical optical telescope.
- Since X-ray photons are so energetic, a typical reflector's mirror wouldn't be able to stop them from passing through.
- If X-rays are to be collected, they must bounce off a reflector at an extremely low angle.
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Answer:
47 miles per hour.
Step-by-step explanation:
miles ÷ hour = miles per hour
so, 141÷3= 47 MPH
Answer:
$50
Step-by-step explanation:
Interest = PRT/100
Principal P = $500
Rate R = 5%
Time T = 2years
Get the interest
Interest = 500*5*2/100
Interest = 5 * 5 * 2
Interest = $50
Hence the interest eaned after 2years is $50
Add 9 to both sides to form a perfect square trinomial:
x² + 6x = 7
x² + 6x + 9 = 16
x² + 2•x•3 + 3² = 16
(x + 3)² = 16
(recall that (a + b)² = a² + 2ab + b²)
Now solve for x. Taking square roots on both sides, we get
x + 3 = ± √16
x + 3 = ± 4
x = -3 ± 4
so the two solutions are x = -7 and x = 1.
