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4 years ago

Sunspots are _ and ___ than the gases surrounding them.

Physics

2 answers:

zlopas [31]4 years ago

7 0

The answer is B. darker ,cooler

Scrat [10]4 years ago

3 0

The answer is B. darker; cooler
the dark spots give off less energy then the rest of the sun.

Hope this helps

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NEED AN ANSWER ASAP!

m_a_m_a [10]

Choice-D is the correct statement.

4 0

3 years ago

A motorboat sets out for open sea. From home it travels 5 km due East, then heads [N35E] at 2 m/s for 90 minutes. After a break,

geniusboy [140]

The distance of the motorboat relative to the home, which travels in various directions, is 3.07 km.

<h3>What is relative velocity?</h3>

Relative velocity is a velocity of an object which is in respect to another observer, or it is a ratio of change in the position of a point to time with respect to another observer.

Given: Travel in East direction ( $d_{E}$ )= 5 km,

velocity in N35E(v) = 2 m / s, time taken(t) = 90 min = 5400 seconds,
Displacement in south ( $D_S}$ ) = 6.5 km

Firstly, find the displacement in N35E so

Displacement = Velocity × time,

$d_{NE}$ = 2 × 5400 = 10800 meters or 10.8 km

Now by using Pythagoras' theorem
We can calculate the return displacement in the south direction( $d_{S}$ ),

$d_{S}$ = $\sqrt{d^{2} _{NE}- d^{2} _{E } }$
$d_{S}$ = $\sqrt{10.8^{2}-5^{2} }$

$d_{S}$ = 9.57 km

Therefore, the distance of the boat from the home (D) = $d_S}$ - $D_S}$

D = 9.57 - 6.5;

D = 3.07 Km

To know more about Relative velocity:

brainly.com/question/19260269

#SPJ1

3 0

1 year ago

A long pipe of outer radius R 1 = 3.70 cm and inner radius R 2 = 3.15 cm carries a uniform charge density of 1.22 mC/m 3 . Assum

7nadin3 [17]

Answer:

E = 4.72 * 10⁻⁶ Nm²

Explanation:

Parameters given:

Outer radius, R = 3.70cm = 0.037m

Inner radius, r = 3.15cm = 0.0315m

Permittivity of free space, ε₀ = 8.85 * 10⁻¹² C/Nm²

Charge density: 1.22 * 10⁻³ C/m³

The question requires that we solve using Gauss law which states that the net electric field through a closed surface is proportional to the enclosed electric charge.

Hence,

E = Q/Aε₀

Charge Q is given as

Q = ρπ(R² ⁻ r²)L

A = 2π(R - r)L

E = [ρπ(R² ⁻ r²)L]/[2π(R - r)ε₀L]

Using difference of two squares,

(R² ⁻ r²) = (R + r)(R - r)

E =[ρ(R + r)]/(2ε₀)

E = [1.22 * 10⁻³ *(0.0370 + 0.0315)]/(2 * 8.85 * 10⁻¹²)

E = 4.72 * 10⁻⁶ Nm²

6 0

4 years ago

The cause of a fire in a computer is described as an incorrectly wired circuit.

Vikentia [17]

Hey there,

The answer to your question is:

Option A

A) The wiring contained a short circuit, so the reduced resistance caused an increase in current.

- Ari -

8 0

3 years ago

A person experiencing heat

balu736 [363]

Answer:

it will be heavy sweating

Explanation:

because if humans expierment a heavy heat they might be sweating heavly

7 0

3 years ago

Sunspots are _______ and _________ than the gases surrounding them.

Sunspots are _ and ___ than the gases surrounding them.