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Likurg_2 [28]
3 years ago
12

Which describes why people on earth can see light from the stars in the sky that are so far away?

Physics
1 answer:
balandron [24]3 years ago
3 0
Choice-C is a correct statement. 

Each of the other choices combines elements of truth
with elements of hogwash.
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GIVING BRAINLIEST TO THE CORRECT ANSWER!!
Basile [38]
The answer is A. locations by the ocean typically do not get as cold in the winter or as hot in the summer as locations that are located inland.
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2 years ago
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Bob walks 370 m south, then jogs 410 m southwest, then walks 370 m in a direction 28 degrees east of north.
wlad13 [49]
We will measure all angles from West, the negative x-axis and divide the journey into 3 parts:
P1 = 370y
P2 = 410cos(45)x + 410sin(45)y = 290x + 290y
P3 = 370cos(270 - 28)x + 370sin(270 - 28) = -174x - 327y

Overall displacement:
x = 290 - 174 = 116 m
y = 370 + 290 - 327 = 333 m

displacement = √(116² + 333²)
= 353 m

Direction:
tan(∅) = y/x
∅ = tan⁻¹ (333 / 116)
∅ = 70.8° from West.
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3 years ago
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A student practicing for a cross country meet runs 250 m in 30 s. What is the average speed
Kaylis [27]

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Explanation:

A student practicing for a track meet, ran 250 m in 30 sec. a. What was her average speed? 250 m = 8.3 m/sec 30 sec.

5 0
2 years ago
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3 years ago
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A handful of professional skaters have taken a skateboard through an inverted loop in a full pipe. For a typical pipe with a dia
Bingel [31]

Answer

given,

diameter of the pipe is  =  (14 ft)4.27 m

minimum speed of the skater must have at very top = ?

At the topmost point of the pipe the  normal force will be equal to zero.

F = mg

centripetal force acting on the skateboard

F = \dfrac{mv^2}{r}

equating both the force equation

mg = \dfrac{mv^2}{r}

v = \sqrt{gr}

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or

r = 4.27/2 = 2.135 m

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v = 14.96 ft/s

or

v = \sqrt{9.8 \times 2.135}

v = 4.57 m/s

5 0
3 years ago
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