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AysviL [449]
4 years ago
14

Which substance has the least density? A. an iceberg B. a gallon of water C. a block of aluminum D. a small piece of lead

Physics
1 answer:
boyakko [2]4 years ago
7 0
C. A block of aluminum
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What must a system owner do, once the threshold leak rate has been exceeded on any low-pressure system using an ozone-depleting
soldier1979 [14.2K]

Answer:

A procedure according to the norms.

Explanation:

If possible, proceed to fix the leak in no more than 30 days from the moment it was discovered.

Otherwise, during the first 30 days develop a planification to backfit the leak or, if needed, retire the appliance. This should be executed within one year.

7 0
3 years ago
9. You drive a car from Milwaukee to Chicago, which is a distance of 150km and it takes you 95
Katena32 [7]

For this case we have to, by definition:

v = \frac {x} {t}

Where:

v: It's the velocity

x: It is the distance traveled

t: It is the time spent

1 hour equals 60 minutes and 1 minute equals 60 seconds.

On the other hand:

1 kilometer equals 1000 meters

So:\frac {150} {95} \frac{km} {min} * \frac {1} {60} \frac {min} {sec} * \frac {1000} {1} \frac {m} {km} = \frac {150 * 1000} {95 * 60} \frac {m} {sec} = \frac {15000} {5700} \frac {m} {sec} = 2.63 \frac {m} {sec}

On the other hand:\frac {150} {95} \frac{km} {min} * \frac {60} {1} \frac {min} {hr} = \frac {150 * 60} {95} \frac {km} {h} = 94.74 \frac {km} {h}

ANswer:

2.63 \frac {m} {sec}\\94.74 \frac {km} {h}

8 0
3 years ago
An insect crawls 4 m east along a hiking path in
alexandr1967 [171]

The insect's velocity is 0.2 meter/second along east.

<h3>What is velocity?</h3>

The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.

Given parameters:

An insect crawls 4 m east along a hiking path.

Time taken by it: t = 20 seconds.

We have to fine: the insect's velocity, v =?

So, the magnitude of velocity: v= 4/20 meter/second = 0.2 meter/second.

And the direction velocity is along east.

Hence,  the insect's velocity is 0.2 meter/second along east.

Learn more about velocity here:

brainly.com/question/18084516

#SPJ1

8 0
2 years ago
Magnetic fields are caused by?
zaharov [31]
The motion of an electric<span> charge producing a magnetic field is an essential concept in understanding magnetism. The magnetic moment of an atom can be the result of the electron's spin, which is the </span>electron orbital motion<span> and a change in the </span>orbital<span>motion of the electrons caused by an </span>applied<span> magnetic field.</span>
3 0
4 years ago
Select all that apply. a scientific theory _____. is true all the time is supported by evidence can evolve over time is a guess
Alenkinab [10]
A scientific theory is supported <span>by evidence. The correct option among all the options that are given in the question is the second option. The other choices are incorrect and can be neglected. he scientific theory is often backed by repeated experiments. I hope that this is the answer that has actually come to your help.</span>
5 0
3 years ago
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