in addition to possibly releasing harmful chemicals in the environment, mining is considered? a.the most dangerous job in the United states. b.the most lucrative job in the United states. c.the least dangerous job in the United states. d.the least lucrative job in the United states

Answers

Answer 1

Answer: Your answer would be A. On a scale of 1 to 10 in dangerous jobs, mining strikes a 10.

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The diagram shows two bar magnets. They are cut along the dashed line, and then the two marked ends are placed near each other. Which statement best explains how the pieces will react? A) The pieces will repel because the cut end of the top magnet is not a magnetic pole. B) The pieces will attract because the cut end of the top magnet is not a magnetic pole. C) The pieces will repel because the cut end of the top magnet is a south pole. D) The pieces will attract because the cut end of the top magnet is a north pole.
Eric traveled east for 150 miles in 2 hours. Then he went west for 40 miles in 1 hour. What is the average velocity?
Hardness is indirectly related to: specific gravity surface roughness strength of chemical bonds weight
You kick a ball with a speed of 14 m/s at an angle of 51 degrees. How far away does the ball land?A. 21.3 m B. 19.6 m C. 1.8 m D. 3.96 m

You put the wet leaves in the container and turn the crank to spin off the water. The radius of the container is 13.2 cm. When the cylinder is rotating at 1.63 revolutions per second, what is the magnitude of the centripetal acceleration at the outer wall?

Answers

Answer:

centripetal acceleration $(a_(c))=13.8m/s^(2)$

Explanation:

convert 1.63rev/sec to rpm by multiplying by 60

= 1.63*60=97.8rpm

Convert this to rad/sec

1rpm =π/30 rad/sec

97.8rpm = 97.8 * (π/30 rad/sec)

=10.25rad/sec

linear velocity= angular velocity *radius

radius =13.2cm=13.2/100=0.132m

v=rω

v= 0.132*10.25

v=1.35m/s

centripetal acceleration = $(v^(2) )/(r)$

$a_(c)=(1.35^(2) )/(0.132)$

$a_(c)=13.8m/s^(2)$

Answer:

$a_(c)$ = 13.8 m/s².

Explanation:

The acceleration centripetal $a_(c)$ is given by:

$a_(c) = (v^(2))/(r)$ (1)

where v: is the tangential speed and r: is the container radius

The tangential speed is equal to:

$v = \omega \cdot r$ (2)

where ω: is the angular velocity

Since 1 revolution is equal to 2π rad, the velocity (equation 2) is:

$v = 1.63 (rev)/(s) \cdot (2\pi rad)/(1rev) \cdot 0.132m = 1.35m/s$

Now, by entering the velocity value calculated into equation (1) we can find the acceleration centripetal:

$a_(c) = ((1.35m/s)^(2))/(0.132m) = 13.8m/s^(2)$

I hope it helps you!

Rachel is helping her younger brother replace a broken part in his toy ambulance. This part is responsible for converting electric energy into light energy. Which of these devices should they use for the replacement?bulb

buzzer

motor

switch

Answers

"The Light Bulb" would be the answer of your question. It converts "Electrical energy" into "Light Energy". So, they should use this, for their replacement purpose in the toy.

In short, Option A is your correct answer.

Hope this helps!

The light bulb, it takes electrical energy and turns it into light energy!

You have a very old service manifold and the high-pressure gauge on this service manifold set has a continuous scale, calibrated to read from 0 to 500 psig. TRUE or FALSE.

Answers

That statement is FALSE

the scale that calibrated to read from 0 to 500 is usually the standard used by the new kind of service

the older one usually only take up to 340

hope this helps

What is the magnitude of the force F on the 1.0 nC charge in the figure ?

Answers

The magnitude of the force F on the 1.0 nC charge 3.11 $e^(-4)$ N.

What is force?

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

In this problem, the 2.0 nC charges both act forces of equal magnitude on the 1.0 nC charge. Since there x-components are equal but opposite, they cancel out and only the y-components remain and add up. This can be used then to calculate for the magnitude of the total electrostatic force.

F = 2 * q1 * q2 / 4 / pi / eps_0 / r^2 * sqrt(3) / 2

F = 2 * 1.0e-9 * 2.0e-9 / 4 / pi / 8.854e-12 / (1.0e-2)^2 * sqrt(3) / 2

F = 3.11 $e^(-4)$ N

The magnitude of the force F on the 1.0 nC charge 3.11 $e^(-4)$ N.

To learn more about force refer to the link:

brainly.com/question/13191643

#SPJ2

What is an astronomical unit?the average distance between planets in the solar system
the average distance between the Earth and the moon
the approximate diameter of the Sun including its atmosphere
the average distance between the Earth and the Sun

Answers

Answer:

Explanation:

If you walk across a nylon rug and then touch a large metal object such as a doorknob you may get a spark and a shock. Why does this tend to happen more on dry days than on humid days (Hint: it has to do with the electric dipole of water molecules). Why are you less likely to get a shock if you touch a small metal object, such as a paper clip?

Answers

Answer:

Explanation:

You are more likely to be shocked during dry days than humid days because during humid days more water is in the air, and water being a good conductor helps the air absorb some of those charges from you, while during dry days there is less water in the air and hence the charges build up since they are not absorbed.

You are less likely to be shocked when you touch a small metal object because smaller metal objects like a paper clip have less space to accept net charge.

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