Isotopes have variable numbers of electrons.
a. True
b. False

Answers

Answer 1

Answer: Isotopes have the same number of valence electrons

Related Questions

The energy of a photon of electromagnetic radiation with wavelength of 800nm is 2.5 x 10-19) True False
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What kind of relationship between the independent and dependent variable does this graph illustrate? A. inverse proportion B. linear C. quadratic D. direct proportion
Assuming that all carts are moving, compare and contrast the differences in the motion of the 3 carts.
Weather differs from climate in that weather can change on a daily basis and is not considered a description of year-to-year conditions of temperature and precipitation.

a car with a mass of 1200 kilograms is moving around a circular curve at a uniform velocity of 20 m/s the centripetal force on the car is 6000 neutrons what is the radius of the Curve

Answers

Coupla things wrong with this question, Sam.
Let's clean those up first, and then we'll work on the answer.

-- The car is NOT moving with uniform velocity.
'Velocity' includes both speed and direction. If either of these
changes, it's a change of velocity.
On a circular track, the car's direction is CONSTANTLY changing,
so its velocity is too.
The thing that's uniform is its speed, not its velocity.

-- A 'neutron' is a subatomic particle found in the nucleus of most
atoms. It's not a unit of force. The unit of force is the 'Newton'.
_______________________

OK. A centripetal force of 6,000 newtons keeps 1,200 kg of mass
moving in a circle at 20 m/s.

The formula:

   Centripetal force = (mass) (speed)² / (radius)

Multiply each side
by 'radius': (centripetal force) x (radius) = (mass) x (speed)²

Divide each side by
'centripetal force':   Radius = (mass) x (speed)² / (centripetal force)

Write in the numbers
that we know: Radius = (1200 kg) (20 m/s)² / (6000 Newtons)

   = (1200 kg) (400 m²/s²) / (6000 Newtons)

   = (480,000 kg-m²/s²) / (6000 kg-m/s²)

   = (480,000 / 6000) meters

   = 80 meters .

Answer:

80 meters

Explanation:

Why does the same side of the moon always face the earth?

Answers

Because the moon takes exactly precisely the same time to rotate once on its axis as it takes to revolve once in its orbit around the Earth.

A resistor in a circuit dissipates energy at a rate of 1 W. If the voltage across the resistor is doubled, what will be the new rate of energy dissipation?

Answers

The new power dissipation will be 4 watts.

Una sustancia radioactiva, cuya temperatura es inconstante, aumenta su temperatura en 30ºF, luego disminuye e 40ºC, luego aumenta en 12R y por último disminuye en 10K; entonces la temperatura final de dicha sustancia: a) No varia b) Aumenta en 24R c) Disminuye en 48R d) Aumenta en 48R e) Disminuye en 24R

Answers

Answer:

What the heck

Explanation:

What is a Vector and a scalar?

Answers

Scalars are quantities that are fully described by a magnitude (or numerical value) alone.
Vectors are quantities that are fully described by both a magnitude and a direction.

After a radioactive atom decays, it is the same element that it was before with no measurable change in mass. Which kind of decay has occurred, and how do you know? alpha decay because alpha particles have no mass beta decay because this kind of decay cannot change one element into another alpha decay because it creates a new isotope of the same element gamma decay because photons have no mass.

Answers

Gammadecay is the production of extremely high-frequency electromagnetic radiation . Gamma decay is the right answer from all types of decay.

What is gamma-decay?

Gammadecay is the production of extremely high-frequency electromagnetic radiation in order to stabilize the unstablenucleus. You must be well-versed in the various energylevels found in an atom.

The Nucleus has its own amount of energy. Gamma decay is the nucleus' method of transitioning from a higher energy level to a lower energy level by emitting high energy photons.

Hence gamma decay is the right answer for all types of decay. Because photons have no mass.

To learn more about gamma decay refer to the link;

brainly.com/question/25455333?referrer=searchResults

Answer:

D. gamma decay because photons have no mass

Explanation:

Other Questions

What are some examples of how we use science in or daily lives?

Compare the time taken by the RC car to cover the same distance. Do some go faster or slower?

An oscillating bock-spring system has a mechanical energy of 1.0 J, an amplitude of 0.10 m, and a maximum speed of 1.2 m/s. Find (a) the force constant of the spring, (b) the mass, and (c) the frequency of oscillation.

Melody is riding her mountain bike along a trail with multiple hills. At the bottom of the second hill, she has 3200 J of kinetic energy. At the top of the third hill, when she is going the slowest, her potential energy measures 1650 J. Which statement below is true? A. The total amount of energy at the bottom of the hill cannot equal the amount at the top, because some of the energy from the environment is gained. B. The total amount of energy at the top is equal to the amount at the bottowm, but she gained some energy as she traveled due to a higher speed going down the first two hills. C. The total amount of energy at the bottom of the hill cannot be equal to the amount at the top, because some of the energy is lost.