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4 years ago

darwins explanation for why different species exist is best described as a law, theory, inquiry, hypothesis?

1 answer:

4 0

It is best described as a THEORY.
A scientific theory refers to a well substantiated explanation of some aspects of natural world which is based on facts which have been repeatedly confirmed to be true through observations and experiments.

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A non-conducting sphere of radius R = 3.0 cm carries a charge Q = 2.0 mC distributed uniformly throughout its volume. At what di

BlackZzzverrR [31]

Answer:

$r =3 *\sqrt{2} = 4.24 cm$

Explanation:

given data

Radius of sphere 3.0 cm

charge Q = 2.0 m C

We know that maximum electric field is given as

$E_{MAX}= \frac{KQ}{r^{2}}$

electric field inside the sphere can be determine by using below relation

$\frac{KQ}{r^{2}}= \frac{1}{2}*\frac{KQ}{R^{2}}$

$r = \sqrt{2}R$

$r =3 *\sqrt{2} = 4.24 cm$

4 0

3 years ago

Which of the fluids below would produce the highest pressure at the bottom of a tank for the same fluid depth?

marishachu [46]

The answer is a property of density. The higher the density, the higher the pressure at the bottom.

Pressure = mass / Area. So given that the 4 samples occupy the same area at the bottom, the mass is going to be the determining factor. Per given volume, mercury has the largest mass. The answer is A

7 0

3 years ago

How could you increase the sleds acceleration

gladu [14]

By putting this special transportation plastic on the bottom of the sled, because the transportation plastic is slick. that is what the transport bins slide around on. (p.s) the plastic is really expensive!

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3 years ago

Convert 1erg into joule by dimensional method

Valentin [98]

Answer:

1 * 10^-7 [J]

Explanation:

To solve this problem we must use dimensional analysis.

1 ergos [erg] is equal to 1 * 10^-7 Joules [J]

$1[erg]*\frac{1*10^{-7} }{1}*[\frac{J}{erg} ] \\= 1*10^{-7}[J]$

4 0

3 years ago

What is the gravitational potential energy of a 5 kg box if it is lifted 3 m from the floor?

Murrr4er [49]

Answer:

Its gravitational potential energy is 117.6 joules.

Explanation:

5 0

3 years ago