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3 years ago

5

What is the difference between weight and mass? Give an example of how they are different.

1 answer:

marusya05 [52]3 years ago

8 0

Mass is the amount of matter it has, while weight <span>is a measurement of the force placed on an object by gravity. An example of how they are different is that mass is always constant while weight varies depending on the location.</span>

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How do scientists determine the number of neutrons in an isotope of an atom?

ikadub [295]

D. The atomic mass in amu is basically the number or nuclei since the mass of the electrons is negligible. For a given atom (element) the number of protons is fixed. Say the element has 10 protons. If the atomic weight is 14 atomic mass units (amu), you know that there are 4 neutrons, since both neutrons and protons are 1 amu each and there are 10 protons

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3 years ago

Please left home at 8 AM to spend the day at in amusement park. He arrived at the park, which was 150 KM from his house, at 10 A

antiseptic1488 [7]

Answer:

$v=\frac{150km}{2h}=75\frac{km}{h}$

Explanation:

We can use the equation for the speed

$v=\frac{x}{t}$

where x is the distance and t the time. In this case we know that the time spent was 2 hours and the distance was 150km. By replacing we have

$v=\frac{150km}{2h}=75\frac{km}{h}$

I hope this useful for you

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3 years ago

I need the answer a sap please

pogonyaev

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3 years ago

At one moment during a walk around the block, there are four forces exerted upon Fido - a 10.0 kg dog. The forces are:

Ann [662]

Explanation:

Given that,

Fapp = 67.0 N at 30.0° above the horizontal (rightward and upward)

Fnorm = 64.5 N, up

Ffrict = 27.6 N, left

Fgrav = 98 N, down

(a) Resolution of the applied force:

Horizontal component,

$F_x=F\cos\theta\\\\=67\times \cos(30)\\\\=58.02\ N$

Vertical component,

$F_y=F\sin\theta\\\\=67\times \sin(30)\\\\=33.5\ N$

(b) Net horizontal force :

$F_x=58.02+(-27.6),\ \text{frictional force act in opposite direction of motion}\\\\F_x=30.42\ N$

It is positive, it will act in right side

Net vertical force :

$F_y=33.5+64.5+(-98),\ \text{gravitational force acts in downward direction}\\\\F_y=0$

Hence, it is clear that the net force is in horizontal direction i.e. 30.42 N due right side.

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3 years ago

A laser penis pointed at a dark wall. A spot of light is seen at exactly where the pen is pointing. Which property of light does

Anna007 [38]

A. Light travels in a straight line.

<u>Expliantion: study island</u>

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2 years ago