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3 years ago

8

1. Does a fish appear closer or farther from a person wearing swim goggles with an air pocket in front of their eyes than the fi

sh really is

2 answers:

Nutka1998 [239]3 years ago

8 0

Answer:

Closer.

Explanation:

Due to the refraction of light passing through water and air.

pychu [463]3 years ago

3 0

Answer: I believe farther. Correct me if I am wrong

Explanation:

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Cobalt (Co) and nickel (Ni) have almost identical atomic mass numbers. Comparing the typical nickel and cobalt atoms, which stat

Ivahew [28]

D. Cobalt has one less proton.

Explanation:

Comparing a typical nickel and cobalt atom suggests that cobalt has one less proton in its nuclear space.

Cobalt has an atomic number of 27

Nickel has an atomic number of 28

Cobalt and nickel are both transition metals found in the d-block on the periodic table.

Atomic number is the number of protons in the nucleus of an atom.

We can see that Nickel has 1 more proton compared to cobalt.

Learn more:

Atomic number brainly.com/question/2057656

#learnwithBrainly

6 0

4 years ago

Read 2 more answers

Choose the option below that best completes this sentence: when two circuit elements (e.g., light bulbs, resistors, etc.) are in

Likurg_2 [28]

When two circuit elements (e.g., light bulbs, resistors, etc.) are in PARALLEL, the voltage drop across each element must be the same. (choice-b)

When the same two circuit elements are in SERIES, the current through each element must be the same.

7 0

3 years ago

A 300 cm rope under a tension of 120 N is set into oscillation. The mass density of the rope is 120 g/cm. What is the frequency

Vikki [24]

Answer:

Explanation:

f = $\sqrt{T/(m/L)} / 2L$

T = 120 N

L = 3.00 m

(m/L) = 120 g/cm(100 cm/m / 1000 g/kg) = 12 kg/m

(wow that's massive for a "rope")

f = $\sqrt{120/12} /(2(3))$ )

f = $\sqrt{10\\}$ /6 = 0.527 Hz

This is a completely silly exercise unless this "rope" is in space somewhere as the weight of the rope (353 N on earth) far exceeds the tension applied.

A much more reasonable linear density would be 120 g/m resulting in a frequency of √1000/6 = 5.27 Hz on a rope that weighs only 3.5 N

5 0

3 years ago

A student weighing 200N climbs a flight of stairs 7.0m high in 8s. What power is required to perform this task?

noname [10]

Answer:

Power required, P = 175 watts

Explanation:

It is given that,

Weight of a student, F = mg = 200 N

The student climbs a flight of stairs of height, h = 7 m

Time taken, t = 8 s

We have to find the power required to perform this task. Work done per unit time is called the power required. Mathematically, it is given by :

$P=\dfrac{W}{t}$

W = work done

t = time taken

$P=\dfrac{mgh}{t}$

$P=\dfrac{200\ N\times 7\ m}{8\ s}$

P = 175 watts

Hence, the power required to complete this task is 175 watts.

3 0

4 years ago

Can I have some help

earnstyle [38]

I think is D cuz all Yoou really need to do is look at the graph

4 0

3 years ago