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Neko [114]
2 years ago
11

HELP PLS !!! Calculate the total current drawn from the 9-volt battery

Physics
1 answer:
cricket20 [7]2 years ago
6 0

Answer:

0.82A

Explanation:

first we resolve the resistors in parallel

i.e 1/R=1/R1+1/R2

=1/R=1/6+1/3

1/R=1/2

R=2/1=2ohms

now we resolve all resistors in series

R=R1+R2+R3

R=6+3+2(the two parallel resistors we resolved are now in series with the others)

R=11ohms

From ohm's law V=IR

I=V/R=9/11= 0.82A.

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Refraction occurs through a glass slab why​
masha68 [24]

Answer:

One when it enters the glass slab from air and second time when it enters the air through glass slab. When light rays travelling through air enters glass slab, they get refracted and bend towards the normal. Now the direction of refracted ray changes again when it comes out of the glass slab into air.

8 0
3 years ago
An astronaut has a momentum of 280 kg and travels 10 m/s. what is the mass of the astronaut?
Kamila [148]

Answer:

The answer is

<h2>28 kg</h2>

Explanation:

The mass of an object given it's momentum and velocity / speed can be found by using the formula

m =  \frac{p}{v}  \\

where

m is the mass

p is the momentum

v is the speed or velocity

From the question

p = 280 kg/ms

v = 10 m/s

The mass of the object is

m =  \frac{280}{10}  = 28 \\

We have the final answer as

<h3>28 kg</h3>

Hope this helps you

3 0
3 years ago
Consider two diffraction gratings. One grating has 3000 lines per cm, and the other one has 6000 lines per cm. Both gratings are
Usimov [2.4K]

Answer:

<em>The 6000 lines per cm grating, will produces the greater dispersion .</em>

Explanation:

A diffraction grating is an optical component with a periodic (usually one  that has ridges or rulings on their surface rather than dark lines) structure that splits and diffracts light into several beams travelling in different directions.

The directions of the light beam produced from a diffraction grating depend on the spacing of the grating, and also on the wavelength of the light.

For a plane diffraction grating, the angular positions of principle maxima is given by

(a + b) sin ∅n = nλ

where

a+b is the distance between two consecutive slits

n is the order of principal maxima

λ is the wavelength of the light

From the equation, we can see that without sin ∅ exceeding 1, increasing the number of lines per cm will lead to a decrease between the spacing between consecutive slits.

In this case, light of the same wavelength is used. If λ and n is held constant, then we'll see that reducing the distance between two consecutive slits (a + b) will lead to an increase in the angle of dispersion sin ∅. So long as the limit of sin ∅ not greater that one is maintained.

7 0
3 years ago
Which EM wave is about the size of humans?
shutvik [7]
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This is very similar to the height of human right before we hit puberty (around 9 - 10 years old)

8 0
3 years ago
5b) how fast is the car going after 6 seconds?
jeka94

Answer:

No imageeeeeeeeeeeeeeeeeeeeee

8 0
3 years ago
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