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3 years ago

After completing an experiment, all chemical wastes should be

Physics

1 answer:

WITCHER [35]3 years ago

6 0

Answer:

The correct answer is

C. disposed of according to your instructor’s directions

Explanation:

The question is not complete here is the complete one with options to choose from

After completing an experiment, all chemical wastes should be

A. taken home

B. dumped in the sink

C. disposed of according to your instructor’s directions

D. left at your lab station for the next class

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miskamm [114]

Answer:

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Explanation:

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Pelicans tuck their wings and free-fall straight down whei} diving for fish. Suppose a pelican starts its dive from q height of

Dominik [7]

Answer:

3.3 m

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

$v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 9.81\times 16+0^2}\\\Rightarrow v=17.72\ m/s$

$v=u+at\\\Rightarrow 17.72=0+9.81\times t\\\Rightarrow \frac{17.72}{9.81}=t\\\Rightarrow t=1.81 \s$

The fish needs to see the pelican before 0.2 seconds in order to escape so the time pelican has is 1.81-0.2=1.61 seconds

In that time the pelican would have traveled

$s=ut+\frac{1}{2}at^2\\\Rightarrow s=0\times 1.61+\frac{1}{2}\times 9.81\times 1.61^2\\\Rightarrow s=12.71\ m$

So, the pelican would be 16-12.71 = 3.3 m above the water.

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3 years ago

Objects have the same velocity only if they are moving the same speed and in the same direction. objects moving at different spe

EastWind [94]

Answer:

Hey

Yes i think you are correct.

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kykrilka [37]

Answer:

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d1i1m1o1n [39]

Answer:

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Explanation:

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