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3 years ago

5

Explain how the planets in the solar system formed

1 answer:

Fed [463]3 years ago

6 0

<span>So we want to know how did the planets form in the Solar system. So the current most accepted explanation is accretion. First the Sun formed, and what has left was a disk made out of gas and dust which later formed the planets trough attractive gravitational force.</span>

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Which two together represent the maximum penalty for violation of the cigarette contraband trafficking act CCTA?

Alex_Xolod [135]

The possible penalties of illegal cigarette contraband trafficking are $5,000 fine and 5 years in prison.

The Contraband Cigarette Trafficking Act is a U.S legislation which prevents unauthorized personnel from carrying a "contraband" amount of cigarettes. The carrying may be done by shipping, transporting, receiving, selling, possessing, distributing or possessing. A contraband amount is defined as being in excess of 10,000.

6 0

3 years ago

A solid silver sphere of radius a = 2.5 cm has a net charge Qin = - 3.0 mC. The sphere is surrounded by a concentric copper sphe

MatroZZZ [7]

Answer:

Part a)

tex]V = -1 \times 10^8 Volts[/tex]

Part b)

$V_{inner} = V_{outer} = -1 \times 10^8 volts$

Part c)

$V = -7.30 \times 10^8 Volts$

Explanation:

Part a)

Net charge distribution on each shell is given as

On surface of radius "a"

$q_a = -3.0 mC$

on radius "b"

$q_b = 3 mC$

on radius "c"

$q_c = -1.0 mC$

Now potential at the outer shell is

$V = \frac{kq_c}{r_c}$

$V = \frac{(9\times 10^9)((-1\times 10^{-3})}{0.09}$

$V = -1 \times 10^8 Volts$

Part b)

Since copper sphere is a conducting sphere so here it will be an equi potential surface

So the potential will remain same throughout the surface of this sphere

Now we can say

$V_{inner} = V_{outer} = -1 \times 10^8 volts$

Part c)

Now electric potential at inner sphere is given as

$V = \frac{kq_a}{r_a} + \frac{kq_b}{r_b} + \frac{kq_c}{r_c}$

$V = \frac{(9\times 10^9)(-3 mC)}{0.025} + \frac{(9\times 10^9)(3 mC)}{0.06} + \frac{(9\times 10^9)(-1 mC)}{0.09}$

$V = -7.30 \times 10^8 Volts$

3 0

3 years ago

A person throws a ball straight up. He releases the ball at a height of 1.75 m above the ground and with a velocity of 12.0 m/s.

Lyrx [107]

Answer:

a) 1.22 s

b) 9.089 m

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

$v=u+at\\\Rightarrow t=\frac{v-u}{a}\\\Rightarrow t=\frac{0-12}{-9.81}\\\Rightarrow t=1.22\ s$

Time taken by the ball to reach the highest point is 1.22 seconds

$s=ut+\frac{1}{2}at^2\\\Rightarrow s=12\times 1.22+\frac{1}{2}\times -9.81\times 1.22^2\\\Rightarrow s=7.339\ m$

The maximum height the ball will reach above the ground is 1.75+7.339 = 9.089 m

8 0

3 years ago

If you are riding on a bus with a friend, you can tell you are<br> moving by observing the motion of

nikklg [1K]

Other object outside the bud

8 0

3 years ago

With mechanical waves, what is moving and what stays in roughly the same place?

Zielflug [23.3K]

The part that moves are called anti-nodes. The stationary pars are nodes

6 0

4 years ago