3 years ago

Help help help im so bad at science ToT

1 answer:

3 0

The first one is hydrogen and the second one is dust

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coldgirl [10]

Answer:

speed equals distance over time 50 divided by 5.

5 0

3 years ago

sertanlavr [38]

V=(40km/hr)(hr/3600s)(1000000mm/km)
v=11111.1mm/s

v=d/t
d=vt
d=(11111.1mm/s)(5s)
d=55555mm
d=5.56x10^4mm

4 0

3 years ago

shtirl [24]

Answer:

Google it

Explanation:

Best if you use google

4 0

3 years ago

KATRIN_1 [288]

Answer:

v = 7.4 m/s

Explanation:

Given that,

Mass if a volleyball, m = 5 kg

The ball reaches a height of 2.8 m

We need to find how fast the ball is going as it bumped into the air. Ket the velocity is v. Using the conservation of energy to find it as follows :

$mgh=\dfrac{1}{2}mv^2\\\\v=\sqrt{2gh} \\\\v=\sqrt{2\times 9.8\times 2.8} \\\\=7.4\ m/s$

So, the required speed is 7.4 m/s. Hence, the correct option is (b).

6 0

3 years ago

UkoKoshka [18]

Any process in which a mixture of materials separates out partially

5 0

4 years ago