Two astronauts on opposite ends of a spaceship are comparing lunches. One has an apple, the other has an orange. They decide to

Answer:

Explanation:

An atom comprises three distinct particles: electrons, protons, and neutrons.

These particles vary in mass and electric charge, contributing to the atom's characteristics.

Electrons bear a negative charge, protons are positively charged, and neutrons possess no charge. An atom is electrically neutral when it has an equal number of electrons and protons, but this can change if particles are removed.

1: Ionized atom model - an ionized atom carries a net charge, which can be positive or negative.

To illustrate an ionized atom, one would need to reduce the number of either electrons or protons.

2: Radioactive atom model: A radioactive atom is characterized as unstable and retains excess energy in its nucleus, often due to added neutrons or protons.

Answer:

The resulting value is .

Explanation:

The question specifies that

The wavelength is .

The velocity is .

The mass of the electron is .

The energy of the incoming light is typically depicted mathematically as

.

Here, c represents the speed of light with the value .

h stands for Planck's constant with a value of .

Thus,

=> .

Typically, kinetic energy is represented as

=> .

=> .

The ionization energy is generally expressed mathematically as

=> .

In circuit analysis, various essential physical quantities must be accurately measured to define circuit characteristics. These include current, denoted as I, representing the flow of electrons, and voltage, which indicates potential difference within the circuit. Most crucially, the resistance, R, outlines the circuit parameters. All these measurements can be determined using a digital multimeter or DMM.

Since we can't see the image the teacher has provided, we must deduce its content based on clues from the answer choices. The image likely illustrates an atom containing 3 protons and 3 neutrons in the nucleus, along with 3 electrons orbiting it. If that is the case, Mike is correct (first choice) because the atomic number indicates the number of protons present in an atom. Since there are 3 protons, it corresponds to lithium, which has an atomic number of 3. The second choice is false, as electrons do not factor into atomic mass. The third and fourth options are also incorrect; regrettably, Joan does not grasp the concepts accurately.

Answer:

Statements 4, 6 & 7 are incorrect.

Explanation:

In any elastic collision, the overall momentum vector sum of the system remains zero.

In this scenario, an elastic collision occurs between the ball and a stationary wall. The ball's velocity will consistently revert after the impact, leading to a change in direction of momentum.

The initial momentum of the ball is represented as:

where:

m = mass of the ball

v = initial velocity of the body

post-collision for the elastic interaction:

• Here, the momentum changes solely in direction, thus contradicting statement 7.

• During the impact, both the ball and the wall exert forces on each other that are equal and opposite. The wall remains motionless, while the ball is influenced by the wall's reaction force, performing work on it, which contradicts statement 4.

• Given that this collision is elastic, the ball's form and dimensions do not alter.

• The previous points clearly indicate that not all provided statements hold true, thus violating statement 6.