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sashaice [31]
3 years ago
10

during a car ride Sandra travel led directly east for 20 miles and then directly south for 15 miles what was her displacement. 2

5 miles at 59.0 degrees south of east, 25 miles at 25.9 degrees east of south, 25 miles at 36.9 degrees south of east, or 25 miles at 42.5 degrees east of south?
Physics
1 answer:
damaskus [11]3 years ago
8 0
25 miles at 42.5 degrees east of south. (20^2+15^2 =C^2...You get 25 miles...East of South because she traveled a longer distance to the East. Then you find the angle between the original and ending point.) Hope it helps. You may ask me any other questions.
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Before CDs and cassette tapes, there were vinyl records. The most comon spun with an angular velocity of 33.3revolutionsperminut
sashaice [31]

Answer:

539.5°

Explanation:

33.3 revolutions per minute

1 revolution = 360°

1 minute = 60 seconds

hence

33.3 revs ----> 1 minute = 60 seconds

X revs -----------> 2.70 seconds

X = (33.3 x 2.7)÷60 = 1.4985 revolutions in 2.70 seconds

1.4985 revolutions = 1.4985 x 360 = 539.46

which is approximately 539.5°

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2 years ago
Which wavelengths does nitrogen catch ?
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Answer:

The strongest lines are at 337.1 nm wavelength in the ultraviolet. Other lines have been reported at 357.6 nm, also ultraviolet. This information refers to the second positive system of molecular nitrogen, which is by far the most common.

Explanation:

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3 years ago
Alternate freezing and thawing often leads to ______.
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The answer from the given options is "A. Creep".


Alternate freezing and thawing often leads to "creep".


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7 0
3 years ago
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You drive a car 2.0 km to the gas station, 4.0 km to the shopping mall to let your mother off, and 4.5 km back home. The trip ta
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8 0
3 years ago
A 50.0 kg student climbs 5.00m up a rope at a constant speed. If the student's power output is 200.0 W, how long does it take th
hammer [34]

Answer:

The time taken by the student to climb is 12.25 seconds and work done is 2450 J.            

Explanation:

Given that,

Mass of the student, m = 50 kg

The student climbs to a height of 5 meters at a constant speed.

The student's power output is 200.0 W, P = 200 W

The power of an object is given by work done divided by time taken. So,

P=\dfrac{W}{t}

(b) W is work done,

W=mgh\\\\W=50\times 9.8\times 5\\\\W=2450\ J

(b)

t=\dfrac{W}{P}\\\\t=\dfrac{2450}{200}\\\\t=12.25\ s

So, the time taken by the student to climb is 12.25 seconds and work done is 2450 J.

3 0
3 years ago
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