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FromTheMoon [43]

3 years ago

5

Why is it important to have the international system of units?

2 answers:

Roman55 [17]3 years ago

8 0

It is important to have the international system of units 'cause <span>it can be used by scientists everywhere around the world, and they will be able to understand each other with more accuracy.

In short, Your Answer would be Option D

Hope this helps!</span>

kap26 [50]3 years ago

6 0

the answer is letter d

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A car accelerates uniformly from 5m/s to 15m/s taking 7.5 seconds. How far did it travel during this period

vodomira [7]

The required answer is 66.925 m which is the distance travelled by the car.

4 0

2 years ago

Read 2 more answers

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

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

$|v+w|^2=400$

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

$|v+w|=20$

7 0

3 years ago

The latitude of any location on earth is the angle formed by the two rays drawn from the center of earth to the location and to

Alina [70]

The distance between city a and city b is 833.345 miles.

We know that

1°=60'

The distance of city a from the initial ray is calculated as

x_a=3960*tan45.46°=4024.101 miles

The distance of city b from the initial ray is calculated as

x_b=3960*tan 38.86°=3190.75 miles

Now the distance between city a and b is equal to

4024.101-3190.75=833.345 miles

This is the vertical distance between the cities.

5 0

3 years ago

If two cars have the same velocity do they have the same acceleration

Allisa [31]

No, if it takes less time, the acceleration is greater.

Hope this helps!

3 0

3 years ago

NEED HELP ASAP PLEASE

Zarrin [17]

Answer:

D. 3.0 m/s

Explanation:

because I did this in my class

8 0

3 years ago