3 years ago

If opposite poles repel each other, why does the north end of a compass point to the north pole?

Physics

1 answer:

lina2011 [118]3 years ago

6 0

Ratios are fractions

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At time t1 = 14 s, a car is located at 99, 80, 27 m and has velocity 4, 0, −3 m/s. At time t2 = 18 s, what is the position of th

Korvikt [17]

Answer:

115, 80, 15m

Explanation

t1 = 14s

t2 = 18s

change in time = 4s (18-14)

r(final) = r(initial) + (average velocity) x (change in time)

multiply the average velocity with the change in time

= (4, 0, -3) x 4 = 16, 0, -12

now we'll add this value to the initial position of the car

(99, 80, 27)m + (16, 0, -12)m = (115, 80, 15)m

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The position-time graph of an object is found to be a straight line passing through the origin. What information about the motio

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-- The object has been traveling at constant speed for all time that
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A train travels 70 kilometers in 1 hours, and then 63 kilometers in 2 hours. What is its average speed?

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The answer is: " 44 $\frac{1}{3}$ km " ;
or; write as: " 44.333 km " .
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Explanation:
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(70 km + 63 km) ÷ (2 + 1 ) = 133 km ÷ 3 = " 44 $\frac{1}{3}$ km " ;
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