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vaieri [72.5K]
3 years ago
9

When using a Microscope's high power objective the course adjustment knob:

Physics
2 answers:
djverab [1.8K]3 years ago
8 0

Answer:

The correct option is;

d. Objective should not be used

Explanation:

The coarse-adjustment knob is the large knob at the base of the Microscope close to the smaller fine-adjustment knob. The coarse-adjustment knob is meant to aid in the movement of the object into proper focus either upwards or downwards and is only meant to be used with the scanning, low power objective lenses.

When using the Microscope's high power objective lens, the field of view is narrower as such only the fine adjustment knob should be used.

kvasek [131]3 years ago
5 0

Answer:

c. Can be used only with scanning

Explanation:

Coarse Adjustment Knob is a large knob on each side of the microscope, with a smaller knob in the middle. This large knob is used to bring an object into close focus as it moves the stage up or down. The coarse-adjustment knob is used ONLY with the scanning or low-power objective lenses.

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A thunderclap sends a sound wave through the air and the ocean below. The
marysya [2.9K]

Answer:

C. 14.93 m

Explanation:

The given frequency of the wave, f = 100 Hz

The given equation for the wave speed, <em>v</em>, is presented as follows;

v = f × λ

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Therefore, we get;

The wavelength, λ = v/f

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Your high-fidelity amplifier has one output for a speaker of resistance 8 Ω. How can you arrange two 8-Ω speakers, one 4-Ω speak
ANTONII [103]

Answer:

(a) 8Ω (b)  Ratio = Parra/P8 ohm = 1

Explanation:

Solution

Recall that,

An high-fidelity amplifier has one output for a speaker of resistance of = 8 Ω

Now,

(a) How can  two 8-Ω speakers be  arranged, when one =  4-Ω speaker, and one =12-Ω speaker

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The Lower arm is : 12 ohm, 4 ohm

The Requirement is  = (16 x 16)/(16 + 16) = 8 ohm

(b) compare  your arrangement  power output of with the power output of a single 8-Ω speaker

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