Which two staments explain how a cell's parts help it get nutrients

How will the speed of a sound wave change if the temperature of the medium rises?. . Select one of the options below as your ans

Stolb23 [73]

The correct answer for this question is " A.. The speed will increase." The higher the temperature, the more energy it has, and making it to vibrate faster. Since it vibrates faster, then sound waves can travel at a higher speed. In other words, it will make the the speed to increase.

5 0

3 years ago

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What is the buoyant force on an object that weighs 340 N and is floating on a lake? if you could explain the answer that would b

Kryger [21]

You just said that the object is "floating".

(As soon as you said that, a picture of a duck flashed through my mind. But then I knew right away that the duck could not be an accurate representation of the situation you're describing. 340 N would be some duck ... about 76 pounds ... and that duck would have been caught and eaten a long time ago. I mean ... what could a 76-pound duck do ? Could it fly away ? Could it run away ? ? Not likely.)

So it's not a duck, but whatever it is, it's just sitting there on the water, floating. What's important is that it's not accelerating up or down. THAT tells us that the vertical forces on it are balanced so that there's NO NET vertical force on it at all.

What are the vertical forces on it ? There's gravity, pulling it DOWN with a force of 340 N, and there's buoyancy, pushing it UP. The SUM of those two forces must be zero ... otherwise the object would be accelerating up or down.

It's not. So (gravity) + (buoyancy) must add up to zero.

The buoyant force on the object is 340 N UPward.

5 0

3 years ago

A 10-turn ideal solenoid has an inductance of 4. 0 mh. to generate an emf of 2. 0 v the current should change at a rate of:_____

Lady bird [3.3K]

The answer is 500 A/sec.

N=10 ; Solensid; L=4 m H ; $\varepsilon=2 \mathrm{~V};$

$\begin{aligned}&\varepsilon=-L \frac{d I}{d t}=N \phi ; \\&2 \times \frac{1}{L}=-\frac{d I}{d t} ; \\&2 \times \frac{1}{4 \times 10^{-3}}=-\frac{d I}{d t} ;\end{aligned}$

$0.5 \times 10^{3}=\frac{d I}{dt}$

So, 500 A/sec.

What is Solensid?

Electromagnets are magnets in which the wire is coiled around an iron core. When an electric current is applied to the iron core, a magnetic field is formed around it. When the power is turned off, the magnetic field dissipates. The wire-wound core of the magnet is ferromagnetic or ferrimagnetic in nature. The most prevalent material utilised in the core is iron.
The magnetic field created is governed by the availability of power. A permanent magnet does not require electricity, and its magnetic field cannot be changed. Solenoid, MRI machines, hard drives, relays, motors, loudspeakers, and generators all employ electromagnets.

To learn more about Solensid visit:

brainly.com/question/15061394

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4 0

1 year ago

A 5kg book rests on a table. How much force is it exerting on the table?

valentinak56 [21]

Answer:

5 Kg of Force

Explanation:

3 0

2 years ago