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3 years ago

Convection can occur in which two substances?

2 answers:

5 0

Convection can't occur in solids because the atoms in a solid objects cannot move from where they are and that's needed in the process of convection, so that rules out wood and ice so the answer is D) air and water.

algol133 years ago

3 0

D) Convection can't occur in solids because the atoms in a solid objects cannot move from where they are and that's needed in the process of convection, so that rules out wood and ice so the answer is D) air and water.

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La capacidad del disco duro de un computador se expresa en gigabytes (GB), sin embargo, hoy se consiguen discos de 1 terabyte o

Maksim231197 [3]

Answer:

1 TB= 1000 GB

Explanation:

The capacity of a computer's hard disk is expressed in gigabytes (GB), however, today disks of 1 terabyte or more (TB) are available.

TB and GB are units of capacity of hard disk of a computer or laptop. We need to write the relation between GB and TB.

1 TB= 1000 GB

There are 1000 GB is equivalent to 1 TB.

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3 years ago

The best way to choose the baseball bat that's right for you is by choosing one that is not too long and not too __________.

bearhunter [10]

Answer:

C. Heavy

Explanation:

You need to be able to lift the bat.

5 0

3 years ago

(i) What is the acceleration of an object between 0-4 seconds?

DENIUS [597]

Answer:

Your small tiny face

Explanation:

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4 0

3 years ago

To take off from the ground, an airplane must reach a sufficiently high speed. The velocity required for the takeoff, the takeof

BlackZzzverrR [31]

<h2>Answer: 26,8 s</h2>

Explanation:

If we are talking about an acceleration at a constant rate , we are dealing with constant acceleration, hence we can use the following equations:

${V_{f}}^{2}={V_{o}}^{2}+2ad$ (1)

$V_{f}=V_{o}+at$ (2)

Where:

$V_{f}$ is the final velocity of the plane (the takeoff velocity in this case)

$V_{o}=0$ is the initial velocity of the plane (we know it is zero because it starts from rest)

$a=5m/s^{2}$ is the constant acceleration of the plane to reach the takeoff velocity

$d=1800m$ is the distance of the runway

$t$ is the time

Knowing this, let's begin with (1):

${V_{f}}^{2}=0+2(5m/s^{2})(1800m)$ (3)

${V_{f}}^{2}=18000m^{2}/s^{2}$ (4)

$V_{f}=134.164 m/s$ (5)

Substituting (5) in (2):

$134.164 m/s=0+(5m/s^{2})t$ (6)

Finding $t$ :

$t=26.8 s$ This is the time needed to take off

6 0

3 years ago

According to Newton's first law, an object in motion will stay in motion unless:

Nadusha1986 [10]

Answer: unless it's acted upon by an external force

Explanation: Newton first law of motion State that an object will continue in it state of rest or in motion, unless it is been acted upon by an external force

8 0

3 years ago