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3 years ago

How can the sun have both a brightness of -26.73 and 4.83? Explain what these numbers mean.

1 answer:

3 0

The Sun has an "absolute magnitude" of 4.83 and an "apparent" magnitude of -26.8. (Which is the difference between the numbers). Scientists use what is know as "Absolute" Magnitude to help them understand and compute how bright a star really is. The "absolute" magnitude of an object, such as a star, equals how bright that object would look if it were 10 parsecs, or 32.6 light years away from the Earth.

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Drawing a shows a displacement vector (450.0 m along the y axis). In this x, y coordinate system the scalar components are Ax 0

Alisiya [41]

Answer:

x ’= 368.61 m, y ’= 258.11 m

Explanation:

To solve this problem we must find the projections of the point on the new vectors of the rotated system θ = 35º

x’= R cos 35

y’= R sin 35

The modulus vector can be found using the Pythagorean theorem

R² = x² + y²

R = 450 m

we calculate

x ’= 450 cos 35

x ’= 368.61 m

y ’= 450 sin 35

y ’= 258.11 m

4 0

2 years ago

What forms of energy are produced by a violin

svet-max [94.6K]

The form of energy a violin produces is sound.

7 0

3 years ago

How does surface air flow in a middle-latitude cyclone in the northern hemisphere? (1 point)?

Vikki [24]

convergent and counterclockwise

hope it helps :)

3 0

3 years ago

Read 2 more answers

The work done by an engine equals one-fourth the energy it absorbs from a reservoir. True or False

Lunna [17]

True IF the engine is 25% efficient. False otherwise.

7 0

3 years ago

Razona si, en las experiencias de Faraday, el efecto producido moviendo el circuito será el mismo que el producido moviendo el i

const2013 [10]

Answer:

moving the circuit or the magnet gives the same result

Explanation:

The faraday effect establishes that the temporal variation of imaginative flow produces an electric potential

fem = $\frac{d \phi }{dt}$ dfi / dt

the magnetic flux is

Ф = B. A = B A cos θ

suppose for simplicity that the angle is zero so cos 0 = 1

Φ = B A

By analyzing this expression, the change in magnetic flux can converge while keeping the magnetic field fixed and varying the electric field or keeping the electric field fixed and varying the magnetic field.

Consequently moving the circuit or the magnet gives the same result

5 0

2 years ago