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Finger [1]
3 years ago
15

1) Choose the answer choice that BEST completes the following sentence.

Physics
2 answers:
Lena [83]3 years ago
5 0

1. one-Half

2. Apogee

3. Any object that revolves around another object

4. Venus's gravitation pull

dimulka [17.4K]3 years ago
3 0

Answer:

1) (d)

2 (a)

3 (d)

4 (d)

Explanation:

1) Like earth, sun also illuminates half of the moon 's surface at a time.

2) The point on the earth orbit which is closest to the earth is called perigee.

3) Any object that revolves around another object in space is called satellite.

4) Venus has very little effect on the formation of tide on the earth as it is far off from it.

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Calculate the acceleration of a car if it's velocity increases from 15 m/s to 75m/s in 5 seconds. ​
Andreas93 [3]
  • initial velocity=u=15m/s
  • Final velocity=v=75m/s
  • Time=t=5s

\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}

\\ \sf\longmapsto Acceleration=\dfrac{75-15}{5}

\\ \sf\longmapsto Acceleration=\dfrac{60}{5}

\\ \sf\longmapsto Acceleration=12m/s^2

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Answer:

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Explanation:

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3 years ago
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Lapatulllka [165]

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Explanation:

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7 0
2 years ago
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Number of complete 90.9 MHz radio waves over a 1.50 km distance
zimovet [89]
You could answer this right away IF you knew the length of each wave, right ?

Well,  Wavelength = (speed) / (frequency).

Speed = 3 x 10⁸ m/s  (the speed of light)
and
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So the length of each wave is  3 x 10⁸ / 90.9 x 10⁶  meters.

To answer the question, see how many pieces you have to cut
that 1.5 km into, in order for each piece to be 1 wavelength. 
It'll be

(1,500 meters) divided by (3 x 10⁸ meters/sec) / (90.9 x 10⁶ Hz)

To divide by a fraction, flip the fraction and then multiply:

(1500 meters) times (90.9 x 10⁶ Hz)/(3 x 10⁸ meters/sec)

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5 0
4 years ago
Between the ball and the player’s head, there are forces. Which of Newton’s laws does this represent? Support your choice.
REY [17]

Answer:

According to Newton's third law

Explanation:

7 0
2 years ago
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