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Maru [420]
3 years ago
5

The radio signal sent from the Earth to the Moon was received again on Earth 2.6 seconds after it was sent. The signal ran at 30

0,000 km /s. Using this data, calculate the distance from Earth to the Moon.​
Physics
1 answer:
Pavlova-9 [17]3 years ago
3 0

Answer:

390000 km

Explanation:

2.6 / 2 = 1.3 (second)

300000 * 1.3 = 390000 km

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Hi! I'm a few days late since I just saw this question just now, but I'll answer anyway.

Answer:

When an unbalanced force acts on a moving object, the velocity of the object will change. Change in velocity means a change in speed, direction, or both. For example, if you kick a soccer ball and it moves from one place to another, it means that unbalanced forces are acting upon it. The ball moves from one place to another after kicking it so the position changed.

8 0
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If |v|= 11, |w|= 23, |v-w|= 30, find |v+w|​
GenaCL600 [577]

Answer:

|v+w|=20

Explanation:

We are given that

|v|=11

|w|=23

|v-w|=30

We have to find the value of |v+w|

|a-b|^2=(a+b)\cdot (a+b)=a^2+b^2-2|a||b|cos\theta

Using the formula

(30)^2=(11)^2+(23)^2-2(11)(23)cos\theta

900=121+529-506cos\theta

900-121-529=-506cos\theta

250=-506cos\theta

cos\theta=-\frac{250}{506}

|a+b|^2=|a|^2+|b|^2+2a\cdot bcos\theta

Using the formula

|v+w|^2=(11)^2+(23)^2+2(11)(23)\times (-\frac{250}{506})

|v+w|^2=400

|v+w|^2=(20)^2

|v+w|=20

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Explanation:

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