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2 years ago

Plz help asap.

Physics

1 answer:

stich3 [128]2 years ago

5 0

Answer:

In a primary cell, two electrodes (one of copper and other of zinc) of metal atoms are used. These electrodes are dipped in an electrolyte solution that causes the metals to produce their respective positive and negative ions.

In this way, the flow of charges takes place and supply the electricity to the source.

Unlike a primary cell, a dry cell contains paste of an electrolyte instead of the solution. The contents of electrolyte paste react with each other through a chemical process and convert the chemical energy into electrical energy.

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Calculate the magnitude of the gravitational force exerted by the Moon on a 79 kg human standing on the surface of the Moon. (Th

Luden [163]

Answer:

F= 134.92 N

Explanation:

Given that

The mass of the moon ,M = 7.4 x 10²² kg

The mass of the man ,m = 79 kg

The radius ,R= 1.7 x 10⁶ m

The force exerted by moon is given as

$F=G\dfrac{Mm}{R^2}$

Now by putting the values in the above equation we get

$F=6.67\times 10^{-11}\times \dfrac{79\times 7.4\times 10^{22}}{(1.7\times 10^6)^2}\ N\\F=134.92 N$

Therefore the force will be 134.92 N.

F= 134.92 N

8 0

3 years ago

Finish the sentence

Amiraneli [1.4K]

Answer:

1. Equal and opposite reaction

2. Pairs

3. That is equal

Explanation:

I have tried my best but without knowing your curriculum or the possible answers it is difficult to know exactly what the answer would be... :(

Please mark as branliest ;)

- Hope this helped!

3 0

3 years ago

Monochromatic light (vacuum = 612 nm) shines on a soap film (n = 1.33) that has air on either side of it. The light strikes the

weeeeeb [17]

Answer:

t = 110.079 nm

Explanation:-

we know that

for constructive interference in thin film

2nt = (m + (1/2))λ

where, n is refractive index

for minimum thickness m =0

2nt = λ /2

thickness t = λ / 4n

Here

wavelength of light, λ = 612*10^{-9} m

refractive indices = 1.393 $t = \frac{(612*10^{-9})}{(4*1.33)}$ $t = 115.03*10^{-9} m$

t = 110.03 nm

4 0

2 years ago

Can be used to assess blank

GenaCL600 [577]

Answer:cells?

Explanation:

Not to sure what you mean

6 0

3 years ago

The rotating blade of a blender turns with constant angular acceleration 1.60 rad/s2.

amm1812

Answer:

a) 23.1 s

b) 68.1 rev

Explanation:

a) t = ω/α = 37.0 / 1.60 = 23.125 ≈ 23.1 s

ω₁² = ω₀² + 2αθ

θ = (ω₁² - ω₀²) / 2α = (37.0² - 0.00²) / 2(1.60) = 427.8125 radians

427.8125 rad / 2π rad/rev = 68.08847...

7 0

2 years ago