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3 years ago

O Which two elements will be the most alike and why?

Physics

2 answers:

katrin [286]3 years ago

8 0

LITHIUM AND SODIUM BECAUSE THEY ARE BOTH METALS SODIUM IS AN EARTH METAL WHILE SODIUM IS AN ALKALINE EARTH METAL

Pavel [41]3 years ago

5 0

C. Because they are in the same group, so they have the same number of valence (outer) electrons

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What is the general relationship between the size of an atom and its first ionization energy?

just olya [345]

The smaller the atom,the larger the first I.E.

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3 years ago

A small metal sphere has a mass of 0.16 g and a charge of -23.0 nC . It is 10 cm directly above an identical sphere with the sam

Hoochie [10]

Explanation:

A) we know that the magnitude of force

$F= \frac{kq_1q_2}{d^2}$

$F= \frac{9\times10^9\times23\times10^{-9}\times23\times10^{-9}}{0.1^2$

= 4.761×10^{-4} N

Also, net force = gravitational force - electrostatic force

B) F_net = F_g - F_e

m×a = m×g - 4.761×10^-4

a = g - 4.761×10^{-4}÷m

a= 9.8 - (4.761×10^{-4} /0.16×10^{-3})

a= 9.8 -2.975625

a= 6.82 m/s

8 0

3 years ago

The plates of an isolated parallel plate capacitor are separated by a distance d and carry charge of magnitude q. The distance b

aleksklad [387]

The energy stored in the capacitor decreases to one-half (½) of its initial value when the distance between the plates is then reduced to d/2.

<h3>The energy stored in a capacitor.</h3>

Mathematically, the energy stored in a capacitor can be calculated by using this formula:

U = ½CV² or U = q²/2C

<u>Where:</u>

q is the charge.

C is the capacitance.

V is the potential difference.

Thus, we can logically deduce that the energy stored in the capacitor decreases to one-half (½) of its initial value when the distance between the parallel plate capacitors is reduced to d/2.

Read more on charge here: brainly.com/question/4313738

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2 years ago

The angular speed of an automobile engine is increased at a constant rate from 1120 rev/min to 2560 rev/min in 13.8 s. (a) What

Neko [114]

Complete Question

The angular speed of an automobile engine is increased at a constant rate from 1120 rev/min to 2560 rev/min in 13.8 s.

(a) What is its angular acceleration in revolutions per minute-squared

(b) How many revolutions does the engine make during this 20 s interval?

rev

Answer: