In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.20 3 106 m/s. Find (a) the force acting on the electron as it revolves in a circular orbit of radius 0.529 3 10210 m and (b) the centripetal acceleration of the electron

Answers

Answer 1

Answer: The force of a particle moving in a circular motion is:
F=ma
where m is the mass and a is the centripetal acceleration, which is expressed as:
a=v²/r

where v is the speed and r the distance between the particles. You use these equations, by substituting the values given in order to solve the problem.

Related Questions

A 1000-kg car is moving along a straight road down a 30∘ slope at a constant speed of 20.0m/s. What is the net force acting on the car?
State the law of conservation of energy
Is it possible to have 400m distance and yet zero for displacement? Please explain by using an example.
A kite suspended in the sky is flowing back and forth. Which type of friction is being described?
Which of the following objects has the greatest inertia?a. baseball b. bowling ball c. pencild. toothpick

A wave travels at a constant speed. How does the frequency change if the wavelength increases by a factor of 2?A.The frequency decreases by a factor of 2. B.The frequency increases by a factor of 4. C.The frequency increases by a factor of 2. D.The frequency does not change.

Answers

Answer : The frequency decreases by a factor of 2.

Explanation :

Given that the wave travels at a constant speed. The speed of the wave is given as :

$v=\nu* \lambda$

Where

υ is the frequency of the wave

and λ is the wavelength of the wave.

In this case, the speed is constant. So, the relation between the frequency and the wavelength is inverse.

$\nu\propto (1)/(\lambda)$

If the wavelength increases by a factor of 2, its frequency will decrease by a factor of 2.

Hence, the correct option is (A) " The frequency decreases by a factor of 2 ".

A.The Frequency decreases by a factor of 2.

Simple True/False Physics QuestionA bar magnet cut in half will yield two complete bar magnets. True or False?

An explanation of your answer would be appreciated.

Answers

True because when a bar magnet or any magnet is cut in half they then start to have their own South and North Pole.

I need help I can't solve it and I'm struggling badly. Justin weighs 185 lb. and decides to climb a staircase that has a vertical distance of 12 m. He climbs the stairs in 12.7 seconds. Calculate his work:

Answers

Answer:

Power is work/time - not needed here

W(work) = F * D force * distance

Here W = M g h

Since 2.20 lb is equivalent to 1 kilogram mass

W = 185 lb / 2.20 lb/kg * 9.80 m/s^2 * 12 m = 824 Joules

note that a pound is a unit of force and a kilogram is a unit of mass

Which piece of evidence did Alfred Wegener use to develop the theory of continental drift?A.tectonic activity concentrated in certain areas

B.the shape of the continents

C.paleomagnetism of the seafloor

D.deep-sea mountain ranges

Answers

The right answer for the question that is being asked and shown above is that: "A.tectonic activity concentrated in certain areas." A piece of evidence did Alfred Wegener use to develop the theory of continental drift is that A.tectonic activity concentrated in certain areas

Which of the following best describes a direct current

Answers

Direct current-is the unidirectional flow or movement of electric charge carries(which are usually electrons.

its an unidirectional flow of electric charge

hope this helps!

How do biotic and abiotic conditions change during secondary succession??

Answers

Answer and explanation;

-Ecological succession is the process by which an environment changes structure, in terms of resident species, over a period of time. Ecological succession falls under two categories, primary and secondary, which determine the types of factors that are involved.

-The factors involved in ecological succession are either biotic or abiotic. Biotic factors are those that involve life and its aspects. Abiotic factors are those that involve aspects external to life but are still indirectly involved. An example of an abiotic factor would be climate.

The soil, an abiotic factor, of an environment affects ecological primary succession greatly. Different species of plants require different soil conditions.

Climate, an abiotic factor highly involved in both primary and secondary succession, plays a significant role in determining the direction of succession in an environment.

Any form of succession will change the environment. That's why there is succession in the first place. With each stage of succession there will be greater biodiversity that results in a change in abiotic factors like soil composition, shade, humidity, weather, exposure, etc

Other Questions

What unit of length is used to express the size of stars?

in 1959 the Santa Susana Field Laboratory had the first and worst) nuclear meltdown in the US history. In this accident, radioactive isotopes 1-131 and Cs-137 were released into the surroundings. Given that the half-life of l-131 is 8.02 days, what percentage of the initial l-131 has decayed up to year 2021? 0 100 % O 0% O 50% 0 95% O 70%

Think about multiplying the mass of each student by a factor to calculate each student’s kinetic energy. Is there a common factor that works for every student? If so, what’s this factor?

How much force is needed to accelerate a 68 kilogram skier at a rate of 1.2m/sec