Suppose you discovered a new element with 120 protons and 2 electrons in its outer lever. In what group does this new element belong

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Answer 1
Answer:

Answer:

This new element belongs to the group 2.

Explanation:

In the periodic table, the vertical columns are called groups (or families). The elements in the same group share similar chemical and physical properties.

One of these properties is the same amount of outer valence electrons.

For example, in the group 1 the elements have 1 outer valence electron (If we assume that the element is in a neutral state which is without electrical charges).

If this new element has 2 electrons in its outer level it will belong to the group 2. The group 2 is well-known as alkaline earth metals.

For example, the magnesium (Mg) and the calcium (Ca) belong to the group 2.

Answer 2
Answer: Assuming the 2 valence electrons are of the neutral state of the new element, the element would belong in Group 2, the Alkaline Earth Metals.

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Disregarding air resistance, what is the speed of a ball dropped from 12 feet just before it hits the ground? (Use 1 ft = 0.30 m, and use g = 9.8 m/s2.)
A 2 kg object falls 3 meters how much potential energy did the object have beforw it fell

True or false:when a plant falls from a window it's thermal energy is transformed into kinetic energy.

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FALSE. The energy transformation is from gravitational potential energy (due to height) to kinetic energy (due to speed).

A ball thrown vertically upward reaches a certain height and comes down again. What can you say about its kinetic energy at the maximum height?

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Answer: The kinetic energy of the ball at the maximum height is zero.

Explanation -

As per the question, the ball is moving vertically upwards. Every time it's velocity will decrease and it becomes zero at the maximum height.


Whole of ball's initial kinetic energy is converted into potential energy at maximum height.


Thus we can conclude that the kinetic energy is zero at the maximum height.

The maximum height is the point where the ball runs out of gas,
stops rising, starts falling, and it's velocity changes from upward
to downward.  At that instant, it has no speed, so its kinetic energy
is zero.

Light has properties of both a particle and a wave. true or false

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true light has both the properties

Suppose two waves collide and the temporary combined wave that results is smaller than the original waves. What term best describes this interaction?a. diffraction
b. destructive interference
c. standing wave formation
d. constructive interference

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Answer: The correct answer is destructive interference.

Explanation:

Interference is the phenomenon in which there is a superposition of the waves. If the amplitude of the resultant wave is more than the original wave then there will be constructive interference.

If the amplitude of the resultant wave is lower than the original wave then there will be destructive interference.

Suppose two waves collide and the temporary combined wave that results is smaller than the original waves.

Therefore, the correct option is b.

the correct answer is B

Current can also be calleda. voltage.
b. electricity.
c. moving charges.
d.
b. and
c.

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Electrical current is the flow of moving charges.
D. It is electricity and moving charges

A car travelling at 32 m/s decelerates at a rate of 6 m/s ^ 2 over 4 secondsWhat is the final velocity the car

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Answer:

v=8m/s

Explanation

The initial velocity, u, of the car=32m/s

Since the car has decelerated, we negate the acceleration

This implies that,

a=-6m{s}^( -2)

Time,t=4s

Let v be the final velocity,

using the relation,

a =  (v - u)/(t)

We obtain the below by substitution

- 6= (v - 32)/(4)

By cross multiplying we obtain,

- 6 * 4 = v - 32

- 24=v-32

- 24+32=v

v=8m/s