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alina1380 [7]
4 years ago
11

What must be true for any endothermic reaction?

Physics
1 answer:
miskamm [114]4 years ago
4 0
They have to be warm because of the word thermic which means heat
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A ten-loop coil having an area of 0.23 m2 and a very large resistance is in a 0.047-T uniform magnetic field oriented so that th
inysia [295]

Answer:

The magnitude of the average emf induced in the coil is approximately o.32 V.

Explanation:

As, no. of loops = N = 10

Area = 0.23 m^2

Magnetic field = B = 0.047 T

Δt = 0.34 s

These are the given things now we have to find the EMF. So the formula of emf is:

emf = e = N×ΔФ/Δt

Therefore, ΔФ = B . ΔA = BΔAcos(θ)

Since, flux is maximum so θ = 0 and cos(0) = 1

Then,

ΔФ = BA

e = N×(BΔA)/Δt

e = 10×(0.047×0.23)/0.34

e = 0.317 V.

So, we can write it by rounding off the digit

e ≅ 0.32 V.

5 0
3 years ago
Compounds are substances in which two or more atoms are chemically combined to form a new,
german

H_2 (hydrogen) is not a compound because it's not made of more than one element. Yes we have more than one component, but both components are of the same element H.

Something like CO_2 is a compound because it's made of carbon and oxygen (specifically 1 carbon and 2 oxygen), so we have at least two different elements here.

8 0
3 years ago
The mass of the earth is 6x10^24 kg and that of the moon is 7.4x10^22 kg. If the radius of the moon is 1740 km, then find the va
sergey [27]

Answer:

In the surface of the moon, gravitational acceleration is 1.63 m/s*2.

Explanation:

An object of mass M will accelerate gravitationally at a distance R if it is at the following distance:

g = G*M/R^2

Where the gravitational constant is G.

G = 6.67*10^(-11) m^3/(kg*s^2)

At the surface of a moon, the distance between its surface and its center will be equal to its radius, since a moon's mass is concentrated at its center, thus:

R = 1740 km

It's important to remember that we need meters in order to work:

1 km = 1000 m

so:

1740 km = (1740)*1000 m = 1740000 m

R =  1740000 m

Basically, the mass consists of:

M = 7.4x10^22 kg

Incorporating all that into the gravitational acceleration equation, we get:

g = (6.67*10^(-11) m^3 / (kg*s^2))*(7.4x10^22 kg) / ( 1740000 m)^2

g = 1.63 m / s^2

In the surface of the moon, gravitational acceleration is 1.63 m / s*2.

3 0
2 years ago
Please answer i’ll give you extra points please i’m begging you PLEASE I NEED HELP FAST
Verdich [7]

Answer:

World War 1 was caused by entangled alliances, nationalism, imperialism, and major

advancements in military technology. Does the Treaty of Versaille address those issues?

Explain your answer using facts. (5 points)

3 0
3 years ago
A quality that has magnitude only is a
Helga [31]
<h3>Answer:</h3>

scaler quantity has magnitude only for example mass ,speed,distance,electric current

8 0
4 years ago
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