How long does it take earth to spin on it axis once?

Answers

Answer 1

Answer: Roughly 4 minutes less than 24 hours.

Answer 2

Answer: 23 hours and 56 minutes

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A particle with charge − 3.74 × 10 − 6 C is released at rest in a region of constant, uniform electric field. Assume that gravitational effects are negligible. At a time 8.36 s after it is released, the particle has a kinetic energy of 3.17 × 10 − 8 J. At what time t after the particle is released has it traveled through a potential difference of 0.401 V?

Answers

Answer:

57.5022228905 s

Explanation:

$V_i$ = Initial voltage

$V_f$ = Final voltage = 0.401 V

$t_1$ = Initial time = 8.36 s

$t_2$ = Final time

K = Kinetic Energy = $3.18* 10^(-8)\ J$

C = Charge = $3.74* 10^(-6)\ C$

Voltage is given by

$V=(K)/(C)\n\Rightarrow V=(3.17* 10^(-8))/(3.74* 10^(-6))\n\Rightarrow V=0.00847593582888\ V$

We have the relation

$(V_i)/(V_f)=((t_i)/(t_f))^2\n\Rightarrow t_f=\sqrt{(t_i^2V_f)/(V_i)}\n\Rightarrow t_f=\sqrt{(8.36^2* 0.401)/(0.00847593582888)}\n\Rightarrow t_f=57.5022228905\ s$

The time taken is 57.5022228905 s

Final answer:

To find the time after which the particle has traveled through a potential difference of 0.401 V, use the formula KE = q · V and solve for t.

Explanation:

To find the time after which the particle has traveled through a potential difference of 0.401 V, we need to use the relationship between kinetic energy, electric potential difference, and charge. The formula is given by:

KE = q · V

where KE is the kinetic energy, q is the charge, and V is the potential difference. Rearranging the formula, we have:

t = KE / (q · V)

Substituting the given values, we get:

t = (3.17 · 10-8) / ((-3.74 · 10-6) · 0.401)

Solving for t, we find that the particle has traveled through a potential difference of 0.401 V at a time of approximately 2.07 seconds.

Learn more about Electric potential difference here:

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Explain the law of conservation of energy.

Answers

Energy cannot be created or lost, but only changes form.

Answer:

Energy cant be created or lost, it only changes form.

Explanation:

The answer above is correct.

Marlene loves astronomy and has enrolled in an online course to learn more about space. The course gives Marlene access to a digital classroom.What does this enable her to do? Check all that apply.

discuss the solar system with others in the class
attend a field trip to a planetarium at a local college
upload an amateur video of a shooting star
make a presentation about her favorite planet
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watch instructional videos made by a teacher

Answers

Answer:

A E and F are the correct answers

Explanation:

Answer:

A E F are correct

Explanation:

The number of electrons in the outer ring of the elements phosphorus,iodine,vanadium,cobalt,sodium,nitrogen,helium,gold,zinc

Answers

helium will have 2 electrons
sodium will have 1 electron.

m8, the outer shell is called the valence shell, and it can be be found by looking at which peirod the element lies in

A car passes the Eiffel tower driving at a constant rate of 60 km per hour. A second car, traveling at a constant rate of 75 km per hour, passes the Eiffel tower a while later and then follows the first car. It catches the first car after traveling a distance of 75 km past the Eiffel tower. How many minutes after the first car passed the Eiffel tower did the second car pass the Eiffel tower

Answers

Answer:

300 minutes.

Explanation:

Given,

Speed of car 1 = 60 Km/h

Speed of car 2 = 75 Km/h

distance travel by car 2 to catch car 1 = 75 Km

time taken to catch the car = ?

Relative velocity between the car = 75 - 60 = 15 Km/h

$time = (distance)/(speed)$

$time = (75)/(15)$

t = 5 hrs

t = 5 x 60 = 300 minutes.

A solution is measured to have a pH of 2.3. What is most likely also true about the solution?1.)It has a low hydroxide ion concentration.
2.)It has a low hydronium ion concentration.
3.)It is neutral.
4.)It has no H2O molecules.

Answers

According to the pH scale, a solution that has a pH of < 7 is considered an acid. Since it is established that the solution is an acid, there will be a low OH- concentration (hydroxide ion) in solution. In terms of hydronium ion, an acid has a higher amount of hydronium ion concentration.

Answer:

the answer is A

Explanation:

took my segment exam!!

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