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3 years ago

A submerged submarine alters its _____ to rise or fall in the water.

Physics

2 answers:

son4ous [18]3 years ago

8 0

Answer:

density

Explanation:

Dima020 [189]3 years ago

3 0

Are there any answer choices?
Submarines use <span>buoyancy by filling ballast tanks up with water. When they are filled with water, they are more dense than the surrounding water, so they are able to sink. If they want to rise, they fill these tanks up with air so that the density is less than the water it surrounds.
Hope this helps! :)</span>

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A piston releases 18 J of heat into its surroundings while expanding from 0.0002 m^3 to 0.0006 m^3 at a constant pressure of 1.0

Elodia [21]

Answer:

value of heat is 18 J

2. step by step

formular w=p(volume1-volume2)

w= 1.0×10^5(0.0006-0.0004)

w= 40 J

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2 years ago

Select which geologic events will have an immediate impact on the landscape. Choose three (3).

alexgriva [62]

Answer: A, B, and D,

C is incorrect because continental drift takes several centuries to move the tectonic plates witch is not an immediate impact leaving you with A,B, and D.

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1 year ago

If the car's speed decreases at a constant rate from 77 mi/h to 50 mi/h in 3.0 s, what is the magnitude of its acceleration, ass

Lostsunrise [7]

The acceleration of the car,

$a = \frac{v-u}{t}$

Here, v is final velocity, u is initial velocity and t is time taken by the car.

Given $u =77 \ mil/h$ , $v = 50 mi/h$ and $t = 3.0 s = 3.0 \times \frac{1 \ h}{3600} = 8.3 \times 10^{-4} h$

Therefore, from above equation

$a = \frac{50 \ mi/h -77 \ mi/h}{8.33 \times 10^{-4} h} = - \frac{27 \ mi/h }{8.33 \times 10^{-4} h} = - 3.2 \times 10^{4} \ mi/h^2$ .

Here, negative sign shows deceleration of a car.

Thus the the magnitude of car acceleration is $3.2 \times 10^{4} \ mi/h^2$ .

3 0

2 years ago

Calculate the molar heat capacity of a monatomic non-metallic solid at 298K which is characterized by an Einstein temperature of

Ratling [72]

Answer: 5.5 ×10^-2 ×3R. Non metals that are solid at room temperature has mono atomic atoms that has only 3 translational modes.

This is why their constant volume molar heat capacities are measured in multiples of 3R.

Explanation: see attachment

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2 years ago

Define 1ohm resistance

algol13

Answer:

1 ohm is equal to one volt (V)/ one ampere (1A) 1 Ohm is defined as the resistance of a conductor with a potential difference of 1 volt applied to the ends through which 1-ampere current flows. Ohms is the SI unit of electrical resistance.

Explanation:

I hope it's help u

7 0

2 years ago