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3 years ago

If an element has 6 electrons, how many of them will be in the 2nd energy level?

1 answer:

5 0

$1st \: answer \: is \: \: \: \: \: \: 4$
$2nd \: answer \: is \: \: \: \: \: 109$
$3rd \: question \: is \: in complete$
$4th \: answer \: is \: \: \: \: 87$

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As a fish jumps vertically out of the water, assume that only two significant forces act on it: an upward force F exerted by the

Sever21 [200]

Answer:

$a = 12.32 \ m/s^2$

$F = 1017.52 \ N$

Explanation:

From the question we are told that

The length of the Chinook salmon is $l = 1.50 \ m$

The mass of the Chinook salmon is $m = 46.0 \ kg$

The upward velocity in water is $u = 3.00 \ m/s$

The upward velocity in air is $v = 5.80 \ m/s$

Generally from kinematic equations

$v^2 = u^2 + 2as$

=> $5.80^2 = 3.00^2 + 2 * a * [ [\frac{2}{3} * l ]$

=> $5.80^2 = 3.00^2 + 2 * a * [ [\frac{2}{3} * 1.5 ]$

=> $5.80^2 = 3.00^2 + 2 * a * [1 ]$

=> $a = 12.32 \ m/s^2$

Generally magnitude of the force F during this interval in N is mathematically represented as

$F = m (a + g )$

=> $F = 46.0 (12.32 + 9.8 )$

=> $F = 1017.52 \ N$

5 0

4 years ago

A race car was is moving at a constant speed of 35 m/s. A security car was

Andrej [43]

Answer:

Final speed of security car v = 65 m/s

Explanation:

Given:

Speed of race car u1 = 35m/s

Speed of security car u2 = 5 m/s

Acceleration = 5 m/s²

Find:

Final speed of security car v

Computation:

Assume, they chase S meter

S = u1t + [1/2]at²

S = 35t

S = u2t + [1/2]at²

so,

35t = 5t + [1/2](5)t²

t = 12 s

v = u + at

v = 5 + 5(12)

Final speed of security car v = 65 m/s

7 0

3 years ago

An amusement park designer wants his swing to have a centripetal acceleration of 24 m/s2. If the velocity of the swing is 11 m/s

viva [34]

Answer:

radius is C: 5.0 m

Explanation:

formular for centripetal acceleration:

$a = \frac{ {V}^{2} }{r}$

a is acceleration

V is velocity

r is radius

$24 = \frac{ {11}^{2} }{r} \\ \\ r = \frac{ {11}^{2} }{24} \\ \\ r = 5.0 \: m$

5 0

3 years ago

Read 2 more answers

This one too!! need just 1 answer about this system

Brums [2.3K]

Answer:

Explanation:

The endocrine system has all of the body's hormones it regulates the biological processes. For example it can help brain development, nervous system development, and it can regulate blood sugar. (This is the closest to A)

5 0

2 years ago

What is matter? explain and give example

kotykmax [81]

Matter is generally any physical substance, and it's all around us... a form of matter would be liquid, and water is a liquid.

4 0

3 years ago