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3 years ago

What combination of variables will make an experiment the most reliable

Physics

1 answer:

Virty [35]3 years ago

4 0

Answer:

Explanation:

A combination of two controlled variables will make an experiment the most reliable.

Variables are the values that we take under any circumstance while doing an experiment so that we can keep on changing and get new results at the end.

It is important to have them in pair so that two values can be kept on changing in terms of any constant condition. This will help to get better results in over all experiment data.

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When you observe a distant galaxy whose photons have traveled for 10 billion years before reaching earth we are seeing that gal?

expeople1 [14]

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4 years ago

Ethane and ethanol are isomers.

alisha [4.7K]

No. The isomers have same molecular formula (same elements in the same number each).

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3 years ago

What is the momentum of a bowling ball with mass of 8.9 kg and a speed of 6.0 m / s

PtichkaEL [24]

Answer:

The momentum of the bowling ball is 53.4 kg-m/s.

Explanation:

We have,

Mass of a bowling ball is 8.9 kg

Speed of the ball is 6 m/s

It is required to find the momentum of the ball. The momentum of an object is given in terms of its mass and speed as :

p = mv

$p=8.9\times 6\\\\p=53.4\ kg-m/s$

So, the momentum of the bowling ball is 53.4 kg-m/s.

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4 years ago

Encontrar el peso de un elefante cuya masa es de 4500kg. Recordar que la gravedad es de 9.8m/s2

dusya [7]

la respuesta es 459.183673 kg s2 / m

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3 years ago

Read 2 more answers

A student (m = 68 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a

Gnesinka [82]

Answer:

5.7141 m

Explanation:

Here the potential and kinetic energy will balance each other

$mgh=\frac{1}{2}mv^2\\\Rightarrow v=\sqrt{2gh}$

This is the initial velocity of the system and the final velocity is 0

t = Time taken = 0.04 seconds

F = Force = 18000 N

a = Acceleration

g = Acceleration due to gravity = 9.81 m/s²

Equation of motion

$v=u+at\\\Rightarrow a=\frac{v-u}{t}$

From Newton's second law

$F=ma\\\Rightarrow F=m\frac{v-u}{t}\\\Rightarrow 18000=68\frac{0-\sqrt{2gh}}{0.04}\\\Rightarrow \frac{18000}{68}\times 0.04=-\sqrt{2\times 9.81\times h}\\\Rightarrow 10.58823=-\sqrt{2\times 9.81\times h}$

Squarring both sides

$112.11061=2\times 9.81\times h\\\Rightarrow h=\frac{112.11061}{2\times 9.81}\\\Rightarrow h=5.7141\ m$

The height from which the student fell is 5.7141 m

5 0

3 years ago