3 years ago

Which is the greatest contribution of Gregor Mendel to society?

Physics

1 answer:

NISA [10]3 years ago

8 0

An understanding of genetic principles. I know its right because its what I got on the test.

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If the angular magnification of an astronomical telescope is 42 and the diameter of the objective is 72 mm, what is the minimum

andriy [413]

Answer:

Minimum diameter=1.714

Explanation:

Angular magnification=fob/fey=42

fob=40*fey

Hence minimum diameter=diameter of objective/angular magnification

minimum diameter=72/42=1.714

4 0

3 years ago

A parallel plate capacitor has circular plates with diameter D=21.5 cm separated by a distance d=1.75 mm. When a potential diffe

OLga [1]

Answer: $E=2.078\times 10^{-10} J/cm^3$

Explanation:

Given

Diameter(D)=21.5 cm

distance between plate=1.75 mm

and we know capacitance is

$C=\frac{\epsilon _0A}{d}$

and we know charge is

Q=CV

and charge density ( $\sigma [tex])[tex]=\frac{Q}{A}=\frac{\epsilon _0AV}{Ad}=\frac{\epsilon V}{d}$

Electric field(E) $=\frac{\sigma }{\epsilon _0}$

Energy density $=\frac{1}{2}\epsilon _0E^2$

Energy desity $=\frac{4\pi \epsilon _0}{8\pi }\frac{V^2}{d^2}$

Energy desity $=\frac{1}{8\pi \cdot 9\times 10^9}\times \left [ \frac{12\times 10^3}{1.75}\right ]^2$

$E=2.078\times 10^{-10} J/cm^3$

3 0

3 years ago

Can you travel faster by not running forward ?

GrogVix [38]

Yeah i think with a car or a plane:)

5 0

3 years ago

What is the proportionality constant between an object and<br> its acceleration by a given force?

labwork [276]

Answer:

The net force acting on an object is proportional to the acceleration of that object with respect to an inertial frame of reference. The constant of proportionality in this, Newton's second law, is the classical mass of the object.

Explanation:

5 0

3 years ago

The following number - 0.050437 - written to TWO significant figures would be

Sophie [7]

Answer:

0.050000

Explanation:

your welcome :)

7 0

3 years ago