2 years ago

Which way does the blue arrow on the earth point

Physics

1 answer:

Charra [1.4K]2 years ago

4 0

Yes jjjjjjjjjdjwjwjrifcuxhns

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If an electron is accelerated from rest through a potential difference of 1200V find its approximate velocity at the end of this

kolbaska11 [484]

Answer: 2.1 × 10^7 m/s

Explanation:

Please see the attachments below

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3 years ago

A plastic rod has been bent into a circle of radius R = 8.00 cm. It has a charge Q1 = +2.70 pC uniformly distributed along one-q

vovikov84 [41]

Answer:

Part a)

$V = -1.52 V$

Part b)

$V = -1.16 V$

Explanation:

Part a)

Electric potential is a scalar quantity

so here we can say that total potential due to a ring on its center is given as

$V = \frac{kQ}{R}$

here we know that

$Q = Q_1 - 6Q_1$

$Q = - 5 Q_1$

$Q_1 = 2.70 pC$

now we have

$V = \frac{(9\times 10^9)(-5\times 2.70 \times 10^{-12})}{0.08}$

$V = -1.52 V$

Part b)

Potential on the axis of the ring is given as

$V = \frac{kQ}{\sqrt{r^2 + R^2}}$

$V = \frac{(9\times 10^9)(-5\times 2.70\times 10^{-12})}{\sqrt{0.08^2 + 0.0671^2}}$

$V = -1.16 V$

8 0

2 years ago

Please help quick please its a test

navik [9.2K]

Answer:

Im pretty sure its y!

Explanation:

6 0

2 years ago

What’s a substance made up of two or more elements

Alex

Answer:

That would be a molecule. : )

Explanation:

The definition of a molecule is a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

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2 years ago

The mass of a brick is 2kg. Find the mass of water displaced by it when it is completely immersed in water. (Density of the bric

hjlf

Answer:

2000g

Explanation:

volume=mass/density

=2000/2.5

=800cm³

mass=density×volume

=800×2.5

=2000g

4 0

2 years ago