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3 years ago

PLZ HELP WILL GIVE BRAINLIEST!!!Click on the diagram that shows a first-class lever.

Physics

2 answers:

NARA [144]3 years ago

8 0

<h2>Answer:</h2>

<u>The correct option is A</u>

<h2>Explanation:</h2>

A lever is a simple machine consisting of a solid or rigid rod pivoted at a fixed hinge called the fulcrum. The first class lever is the one that uses a fulcrum in between, and the applied force and load are at opposite ends. If we look at the diagram the first diagram shows the fulcrum in centre and load and force on each end. Load is always lifted by applying force so in the diagram E shows the force and R might be showing the load which is lifted.

Schach [20]3 years ago

3 0

the correct one is not on here but if there is no more choices then it is the first one

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Well.....
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3 years ago

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A few hundred tons of comet dust are added to Earth daily from the millions of meteors that enter our atmosphere. Estimate the t

slavikrds [6]

Answer:

$=9.953\times 10^{16} Days$

Explanation:

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0.1% of the weight of the Earth will be

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3 years ago

Which part of the electromagnetic specturm has the lowest radiant energy?

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3 years ago

Two motors in a factory are running at slightly different rates. One runs at 825.0 rpm and the other at 786.0 rpm. You hear the

mixas84 [53]

Answer:

$T=1.54s$

Explanation:

From the question we are told that:

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Speed of Motor 2 $\omega_1=786rpm=>2 \pi 13.1$

Therefore

Frequency of Motor 1 $f_1=13.75$

Frequency of Motor 2 $f_2= 13.1$

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Where

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3 years ago

Calculate the work function that requires a 475 nm photon to eject an electron of 1.25 eV.

lapo4ka [179]

The work function has the formula
E = h v

where
E is the energy
h is the constant
v is the frequency

Since the given is wavelength, we use the relationship between frequency and wavelength
v = c / λ
where
c is the speed of light
<span>λ is the wavelength
</span>
So.
E = h c / <span>λ
h = E</span><span>λ / c = 1.25 eV (475x10-9m) / (3x10^8 m/s)
h = 1.9792 x 10^-15

The work function is:
E = 1.9792 x 10-15 v

</span>

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3 years ago

PLZ HELP WILL GIVE BRAINLIEST!!!﻿Click on the diagram that shows a first-class lever.

PLZ HELP WILL GIVE BRAINLIEST!!!Click on the diagram that shows a first-class lever.