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3 years ago

State two reasons why the rod is not in equilibrium

Physics

1 answer:

Lubov Fominskaja [6]3 years ago

5 0

Answer:

For equilibrium the net torque on the rod must be zero. So the 100N forces should on either side of the pivot point i.e. one on the left and one the right, and in same direction.

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The object has a redshift of 7.6 and the JWST observes the object at a wavelength of 2 microme-

olasank [31]

b. The wavelength of light emitted by the object is 233 nm

c. The type of radiation originally emitted by the object is ultraviolet radiation.

To find the wavelength, we need to know what redshift is.

<h3>What is redshift?</h3>

Redshift is the increase in wavelength and the corresponding decrease of frequency and photon energy of electromagnetic radiation.

Redshift is given by z = λ'/λ - 1 where

λ' = observed wavelength and
λ = emitted wavelength.

Making λ subject of the formula, we have

λ = λ'/(1 + z)

Given that has a redshift of 7.6 and the JWST observes the object at a wavelength of 2 micrometres (mid-infrared light).

So,

z = 7.6 and
λ' = 2μm

<h3>(b) What is the wavelength of the light emitted by the object?</h3>

Substituting the values of the variables into the equation, we have

λ = λ'/(1 + z)

λ = 2μm/(1 + 7.6)

λ = 2μm/8.6

λ = 0.233 μm

λ = 233 nm

So, the wavelength of light emitted by the object is 233 nm

<h3>c. What type of radiation was originally emitted by the object?</h3>

Since the wavelength is 233 nm and the wavelength is in the range of ultraviolet radiation 200 nm - 315 nm.

So, the type of radiation originally emitted by the object is ultraviolet radiation.

Learn more about redshift here:

brainly.com/question/27915180

#SPJ1

8 0

3 years ago

Can u guys check my 3 anwsers? *^* And tell me if i got them right?

viva [34]

My answers would be as follows:

<span>You step on the scale and notice that you have lost five pounds. Which of the following has changed?

B) Only your weight changed since mass is conserved. It cannot be destroyed or created.

How could you increase the mass of a wooden block?

D) None of the above. Mass cannot be created so the mass will stay the same it will only be the weight you can increase depending on the acceleration.

If you went to the moon, how would your mass change relative to your mass on Earth?

A) It would be the same on the moon as on Earth. Mass will be the same. It is weight that will change since the gravitational acceleration in the moon is different as that to the earth.
</span>

8 0

3 years ago

A lamp draws a current of 0.50 A when it is connected to a 120 V source? What is the resistance of the lamp?

emmainna [20.7K]

Given,
Current (I) = 0.50A
Voltage (V) = 120 volts
Resistance (R) =?
We know that:-
Voltage (V) = Current (I) x Resistance (R)
→Resistance (R) = Voltage (V) / Current (I)
= 120/0.50
= 24Ω
∴ Resistance (R) = 24Ω

8 0

3 years ago

Read 2 more answers

The acceleration due to gravity of the moon is 1.67

Karo-lina-s [1.5K]

Answer:

I think it's 1.625 m/s2

5 0

3 years ago

A grating having 5000 lines/cm is used with light of wavelength 633 nm. How many total maxima (count central maxima plus all tho

OleMash [197]

Answer: