2 years ago

Select all the correct answers.

Physics

1 answer:

WARRIOR [948]2 years ago

3 0

Oop i have no clue but i need to answer questions so that i can ask some :)

You might be interested in

balls a, with a mass of 20 kg, is moving to the right at 20 m/s. At what velocity should Ball B, with a mass of 40 kg, move so t

Leya [2.2K]

In that case, their momentum must be equal.
So, m1v1 = m2v2
20 * 20 = 40 * v2
v2 = 400 / 40
v2 = 10

In short, Your Answer would be: 10 m/s

Hope this helps!

3 0

3 years ago

The periodic wave in the diagram below has a frequency of 80. hertz.

ASHA 777 [7]

Answer:

hi how are you

2) 5/8

4) 5/8

6 0

2 years ago

Two airplanes leave an airport at the same time. The velocity of the first airplane is 730 m/h at a heading of 44.3 ◦ . The velo

Goshia [24]

Answer:

So airplane will be 1324.9453 m apart after 2.9 hour

Explanation:

So if we draw the vectors of a 2d graph we see that the difference in angles is = 83 - 44.3 = $83-44.3=38.7^{\circ}$

Distance traveled by first plane = 730×2.9 = 2117 m

And distance traveled by second plane = 590×2.9 = 1711 m

We represent these distances as two sides of the triangle, and the distance between the planes as the side opposing the angle 38.7.

Using the law of cosine, $d^2$ representing the distance between the planes, we see that:

$d^2=2117^2 + 1711^2 -2\times (2117)\times (1711)cos(38.7)=1755480.2482$

d = 1324.9453 m

4 0

3 years ago

2. The substances that undergo change in a chemical reaction are called

AVprozaik [17]

Reactants

In a chemical reaction, the substances that undergo change are called reactants. The new substances formed as a result of that change are called products.

4 0

3 years ago

What causes some materials to have a magnetic fields?

Viktor [21]

Well it determines on how much magnetism a material has.

6 0

3 years ago

Read 2 more answers