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Umnica [9.8K]
3 years ago
12

Which sounds can be heard safely by humans without

Physics
2 answers:
love history [14]3 years ago
5 0

These sounds can be heard safely by humans without risking permanent hearing loss:

-- rustling leaves . . . . . Yes

-- normal conversation  . . . . . Yes

-- vacuum cleaner  . . . . . Yes IF it's on the floor and you're standing up.

-- front row at a rock concert . . . . . No

-- jet takeoff . . . . . Yes BUT only if you're at least a mile away from the jet.

schepotkina [342]3 years ago
3 0

Answer:

-- rustling leaves . . . . . Yes

-- normal conversation  . . . . . Yes

-- vacuum cleaner  . . . . . Yes

-- front row at a rock concert . . . . . No

-- jet takeoff . . . . . No

Explanation:

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4 years ago
List at least 5 examples of civil rights
mariarad [96]

Answer:

right to vote, the right to a fair trial, the right to government services, the right to a public education, and the right to use public facilities.

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3 years ago
“You can’t get more energy from a machine than the amount of energy you put into it,” is one way of stating the law of conservat
goldenfox [79]

Answer:

Energy

Explanation:

One ways of stating the law of conservation of energy is that "you cannot get more energy from a machine than the amount of energy you put into it".

The law of conservation of energy states that in a system, energy is neither created nor destroyed but transformed from one form to another.

The energy in a system does not increase based on the premise of this law.

  • The efficiency of a machine can reduce but the energy is always conserved.
  • This is because energy is transformed to other forms.
5 0
3 years ago
When using higher magnification, you need more light. which parts of the microscope can be adjusted to provide more light, and h
valina [46]

Increased lamp voltage is achieved by turning the light intensity dial.

To enlarge the diameter of the hole and let more light through the slide, the iris diaphragm was modified.

Condenser: Position it higher and closer to the slide's bottom to better direct light to the centre of the slide.

<h3>How do you adjust the light level on a microscope?</h3>

Utilize the brightness adjustment knob to change the brightness. Turn the brightness control knob while looking through the eyepieces to make sure there is no glare in the field of view.

Use a daylight balancing filter if your compound microscope has a certain sort of illumination. It typically rests directly on top of the luminator or in a filter holder above the light. This filter is blue.

The daylight balancing filter will correct the colour temperature and produce a higher-quality image if your microscope is lighted by tungsten or halogen (and a better colour image). This blue filter is not necessary if your microscope is an LED.

To learn more about light level on a microscope, visit:

brainly.com/question/14727797

#SPJ4

8 0
2 years ago
Newton's first law states that objects do not change their motion unless acted upon by a net force. What does the word 'net' mea
ollegr [7]
Answer it is b is the best option to pick A, does that make sense
7 0
4 years ago
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