3 years ago

How many neutrons does element X if it’s atomic number is 28 and its mass number is 87

Physics

1 answer:

Sergeeva-Olga [200]3 years ago

7 0

the answer is 59 neutrons

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Explanation:

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4 years ago

Elaborate . on what can be learned about the properties by the location of element on the periodic table . Use atomic number 13

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3 years ago

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A student produces a power of p = 0.87 kw while pushing a block of mass m = 75 kg on an inclined surface making an angle of Î¸ =

Paul [167]

When block is pushed upwards along the inclined plane

the net force applied on the block will be given as

$F_{net} = mg sin\theta + \mu_k mg cos\theta$

here we know that

m = 75 kg

$\theta = 8.5 degree$

$\mu_k = 0.16$

now plug in all values into this

$F_{net} = 75\times 9.8 sin8.5 + 0.16 \times 75\times 9.8 cos8.5$

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now for finding the power is given as

$P = Fv$

$0.87 \times 10^3 = 225 \time v$

$v = \frac{870}{225} = 3.87 m/s$

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3 years ago

In the picture below, a doctor is having a video conference with a patient. What might be a positive effect of the technology be

GarryVolchara [31]

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Sorry to say but where is the photo???

The positive effect of technology being used might be using sethescope or checking BP rate if it is good.

Explanation:

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3 years ago

The diagram below shows a portion of the rock cycle.

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Referring to the attached image below which represents the complete rock cycle, we will find that a marble can be formed when hot magma is cooled and crystallized.

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