How do you think overpumping groudwater is related to the formation of sinkholes?

1 answer:

vladimir2022 [97]4 years ago

3 0

Ground water keept the ground at a stable level when it is gone the cavern it was in has no support and is at risk of callaps

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Suppose we have three hypothetical atomic nuclei: A, B, and C. Nucleus A has 7 protons and 7 neutrons. Nucleus B has 5 protons a

alina1380 [7]

Answer:

Nucleus A with 7 protons and 7 neutrons and Nucleus C with 7 protons and 5 neutrons are isotopes of the same elements

Explanation:

Isotopes are elements that have the same atomic structure but different molecular structure. An atom that has the same atomic number but different mass number are known to be isotopes.

The proton of an atom is the same as its atomic number while the sum of the proton and neutron is equal to its mass number.

According to the question, nuclei that has the same number of proton are isotopes of the same element. Therefore nuclei A and C with 7 protons each are isotopes of the same element since they have the same atomic number i.e number of proton = atomic number.

Their atomic masses of nuclei A and C are 14 and 12 respectively

3 0

3 years ago

A car moving 20 m/s in the positive x-direction slams on the brakes and stops after skidding 20 m. what was its acceleration dur

pav-90 [236]

To find the acceleration of the car, we can use the following relationship:
$v_f^2 - v_i^2 = 2 aS$
where
$v_f=0$ is the final speed of the car (it is zero because the car comes to rest)
$v_i=20 m/s$ is the initial speed of the car
$a$ is the acceleration
$S=20 m$ is the distance covered

By rearranging the equation, we get:
$a= \frac{-v_i^2}{2 S}= \frac{-(20 m/s)^2}{2 (20 m)} =-10 m/s^2$
where the negative sign means it is a deceleration.

7 0

3 years ago

Imagine you could travel to the moon where the acceleration due to gravity is 1.6 m/s^2. What would be the period of

VladimirAG [237]

Answer:

4.9612 s

Explanation:

Applying,

T = 2π√(L/g)............... Equation 1

Where T = period of the pendulum, L = Lenght of the pendulum, g = acceleration due to gravity of the moon, π = pie.

From the question,

Given: L = 1 m, g = 1.6 m/s²