1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
In-s [12.5K]
3 years ago
7

An asteroid has acquired a net negative charge of 149 C from being bombarded by the solar wind over the years, and is currently

in equilibrium whereby it expels electrons at the same rate as it acquires them. How many more electrons does it have than protons
Physics
1 answer:
bearhunter [10]3 years ago
5 0

Answer:

93.125 × 10^(19)

Explanation:

We are told the asteroid has acquired a net negative charge of 149 C.

Thus;

Q = -149 C

charge on electron has a value of:

e = -1.6 × 10^(-19) C

Now, for us to determine the excess electrons on the asteroid, we will just divide the net charge in excess on the asteroid by the charge of a single electron.

Thus;

n = Q/e

n = -149/(-1.6 × 10^(-19))

n = 93.125 × 10^(19)

Thus, it has 93.125 × 10^(19) more electrons than protons

You might be interested in
A race car makes one lap around a track of radius 180 m in 90.0 s. What is the centripetal acceleration in m/s2?
kvasek [131]

Answer:

0.9m/s^2 (yours is 0.87, so choose that)

Explanation:

formula for centripetal acceleration:

v^2/r

to find v, we know that f=1/90s, and r=180m.

v=(2pir)/T

v=(2pi(180))/90

v=12.6m/s

now plug into a=v^2/r

a=(12.6)^2/180

a=0.9m/s^2

4 0
3 years ago
Prove that..<br>please help<br>​
GaryK [48]

\large{ \boxed{ \bf{ \color{red}{Universal \: law \: of \: gravitation}}}}

Every object in the universe attracts every other object with a force which is proportional to the product of their masses and inversely proportional to the square of the distance between them. The forces along the line joining the centre of the two objects.

❍ Let us consider two masses m1 and m2 line at a separation distance d. Let the force of attraction between the two objects be F.

According to universal law of gravitation,

\large{ \longrightarrow{ \rm{F \propto m_1 m_2}}}

Also,

\large{ \longrightarrow{ \rm{ F \propto  \dfrac{1}{ {d}^{2} } }}}

Combining both, We will get

\large{ \longrightarrow{ \rm{F  \propto  \dfrac{ m_1 m_2}{ {d}^{2}}}}}

Or, We can write it as,

\large{ \longrightarrow{ \rm{F  \propto  \:  G \dfrac{ m_1 m_2}{ {d}^{2} }}}}

Where, G is the constant of proportionality and it is called 'Universal Gravitational constant'.

☯️ Hence, derived !!

<u>━━━━━━━━━━━━━━━━━━━━</u>

8 0
3 years ago
g A particle starts moving from the origin of the coordinate system with the initial velocity v(0)=&lt;0,0,2&gt; and acceleratio
mariarad [96]

Answer:

2s

Explanation:

The position function of the motion can be expressed as:

s = s_0 + v_0t + at^2/2

where s_0 = is the origin where the particle starts off, v_0 =  m/s and a = <1,2,0> m/s2. In the 3-coordinate system it can be written as

s =  =

For the particle to hit the 2x+y-z=4 plane then its coordinates must meet that criteria

2t^2/2 +t^2-2t = 4

2t^2 - 2t -4 = 0

t^2 - t - 2 = 0

t= \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}

t= \frac{1\pm \sqrt{(-1)^2 - 4*(1)*(-2)}}{2*(1)}

t= \frac{1\pm3}{2}

t = 2 or t = -1

Since t can only be positive we will pick t = 2s

3 0
3 years ago
Defination of formula bar​
Gekata [30.6K]

The Formula Bar is where data or formulas you enter into a worksheet appear for the active cell. The Formula Bar can also be used to edit data or formula in the active cell. The active cell displays the results of its formula while we see the formula itself in the Formula Bar.

mark me brainliestt :))

7 0
3 years ago
Read 2 more answers
Help pls ASAP thank you
tino4ka555 [31]

Answer: 3rd option

Explanation: Since it has less mass and same force as other object it will have higher acceleration

7 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone please give me a hand I'm trying to make sure I choose the right answer.
    9·1 answer
  • Why are the vector quantities magnitude and direction
    6·2 answers
  • For a block to move down an inclined plane what force has to be the greatest?
    5·1 answer
  • Consider a cyclotron in which a beam of particles of positive charge q and mass m is moving along a circular path restricted by
    12·1 answer
  • List two ways that economics relates to the environment
    11·1 answer
  • 5
    8·1 answer
  • Calcula la fuerza magnética de una carga que se desplaza hacia la derecha con una velocidad de 5 X 10 a la 6 metros sobre segund
    5·1 answer
  • a stone is thrown vertically upwards with an initial velocity of 20 metre per second find the maximum height it reaches and the
    14·1 answer
  • Calculate the radiative and collisional energy losses (in keV/micron) for a 1.9 MeV electron in lead and determine the rad./coll
    6·1 answer
  • You are driving to the grocery store at 20 m/s. You are 110 m from an intersection when the light turns red. You have a reaction
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!