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2 years ago

Why is genetics considered a theory and not a hypothesis?

Physics

2 answers:

lukranit [14]2 years ago

6 0

Theory is a guess that consists of something a group of people believe to be true a hypothesis is an educated guess

Paha777 [63]2 years ago

3 0

I dont know i asked that question?!?!?!?!?!?
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What type of Gaussian surface is best to determine the electric field from a large (ignore edge effects) sheet of charge

iragen [17]

Answer:

Explanation: Choose a gaussian surface that goes through the point for which you want to know the electric field. Ideally, the surface is such that the electric field is constant in magnitude and always makes the same angle with the surface so that the flux integral is straightforward to evaluate

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1 year ago

Which of the following is a pure substance that can't be separated by physical means, and can't be decomposed into other substan

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2 years ago

Read 2 more answers

100Gw x 35ms (note: a watt is a joule per second)

Leviafan [203]

'G' = "giga..." = billion = 10⁹

'ms' = "millisecond" = 0.001 second

100 Gw = 10¹¹ watts

35 ms = 0.035 second

100 Gw x 35 ms = 10¹¹ watts x 0.035 second = 3.5 x 10⁹ J

= 3.5 G-joules

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2 years ago

8. Where are the ribosomes usually located in plant and animal cells?

professor190 [17]

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Ribosomes are found 'free' in the cytoplasm or bound to the endoplasmic reticulum (ER) to form rough ER.

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2 years ago

A 1100 kg car rounds a curve of radius 68 m banked at an angle of 16 degrees. If the car is traveling at 95 km/h, will a frictio

Mariulka [41]

Answer:

Yes. Towards the center. 8210 N.

Explanation:

Let's first investigate the free-body diagram of the car. The weight of the car has two components: x-direction: towards the center of the curve and y-direction: towards the ground. Note that the ground is not perpendicular to the surface of the Earth is inclined 16 degrees.

In order to find whether the car slides off the road, we should use Newton's Second Law in the direction of x: F = ma.

The net force is equal to $F = \frac{mv^2}{R} = \frac{1100\times (26.3)^2}{68} = 1.1\times 10^4~N$

Note that 95 km/h is equal to 26.3 m/s.

This is the centripetal force and equal to the x-component of the applied force.

$F = mg\sin(16) = 1100(9.8)\sin(16) = 2.97\times10^3$

As can be seen from above, the two forces are not equal to each other. This means that a friction force is needed towards the center of the curve.

The amount of the friction force should be $8.21\times 10^3~N$

Qualitatively, on a banked curve, a car is thrown off the road if it is moving fast. However, if the road has enough friction, then the car stays on the road and move safely. Since the car intends to slide off the road, then the static friction between the tires and the road must be towards the center in order to keep the car in the road.

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3 years ago