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3 years ago

Food deteriorated more slowly in a refrigerator because

Physics

1 answer:

REY [17]3 years ago

6 0

Because the low temperature in the refrigerator slows the action of bacteria and fungi on food substances.

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As a defensive measure, forces afloat would typically operate in highly dispersed formations, sometimes covering an area of more

hoa [83]

Answer:

B - False

Explanation: a dispersed formation means spreading out, more like an attacking or advancing position. This doesn't depict a defensive measure.

7 0

4 years ago

An amusement park ride consists of a rotating circular platform 11.1 m in diameter from which 10 kg seats are suspended at the e

frozen [14]

To solve this problem we will use the relationship given between the centripetal Force and the Force caused by the weight, with respect to the horizontal and vertical components of the total tension given.

The tension in the vertical plane will be equivalent to the centripetal force therefore

$Tsin\theta= \frac{mv^2}{r}$

Here,

m = mass

v = Velocity

r = Radius

The tension in the horizontal plane will be subject to the action of the weight, therefore

$Tcos\theta = mg$

Matching both expressions with respect to the tension we will have to

$T = \frac{\frac{mv^2}{r}}{sin\theta}$

$T = \frac{mg}{cos\theta}$

Then we have that,

$\frac{\frac{mv^2}{r}}{sin\theta} = \frac{mg}{cos\theta}$

$\frac{mv^2}{r} = mg tan\theta$

Rearranging to find the velocity we have that

$v = \sqrt{grTan\theta}$

The value of the angle is 14.5°, the acceleration (g) is 9.8m/s^2 and the radius is

$r = \frac{\text{diameter of rotational circular platform}}{2} + \text{length of chains}$

$r = \frac{11.1}{2}+2.41$

$r = 7.96m$

Replacing we have that

$v = \sqrt{(9.8)(7.96)tan(14.5\°)}$

$v = 4.492m/s$

Therefore the speed of each seat is 4.492m/s

6 0

4 years ago

According to the collision theory, all collisions do not lead to reaction. Which choice gives both reasons why not all collision

Maksim231197 [3]

Answer:

Explanation:

reasons why not all collisions between reactant molecules lead to reaction

1.The total energy of two colliding molecules is less than some minimum amount of energy.

2. Molecules cannot react with each other unless a catalyst is present.

hence the correct option will be D that is 1 and 2.

8 0

4 years ago

In a group of Channel catfish, some individuals have a brown body and others have a white

alexandr402 [8]

Answer:

Explanation:

If the fish is brown, it had the dominant genotype.

8 0

2 years ago

A wave with a frequency of 0.5 Hz and a speed of 10 m\s has a wavelength of..

aniked [119]

Wavelength = (speed) divided by (frequency) = 10/0.5 = <span>20 </span>

3 0

4 years ago