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irina1246 [14]
3 years ago
14

Which element has an isotope with 43 neutrons and a mass number of 76?

Physics
1 answer:
nexus9112 [7]3 years ago
7 0

Answer:

B. Arsenic

Explanation:

76 - 43 = 33 protons

on a periodic table element 33 is Arsenic

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Fill in the blanks (about force)<br> depends on _____ and _____
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Depends on who and where I’m just answering
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a grinding wheel is initially rotating with an angular velocity 5500 rad/srad/s when its motor is suddenly turned off. it comes
kiruha [24]

The angle through which the grinding wheel rotates in the first second =  <u>5300 rad</u>

Angular velocity is, the time charge at which an object rotates, or revolves, about an axis, or at which the angular displacement between our bodies changes. within the discern, this displacement is represented via the angle θ among a line on one body and a line on the alternative.

The angular velocity is described as the charge of trade of the angular position of a rotating body. Linear speed is defined because the charge of change of displacement with respect to time whilst the item moves alongside a straight course.

Initial angular velocity of the grinding wheel = ω1 = 5500 rad/s

Final angular velocity of the grinding wheel = ω2 = 0 rad/s   (Comes to rest)

Time is taken by the grinding wheel to come to rest = T = 10 sec

Angular acceleration of the grinding wheel = α

2 = ω1 + αT

0 = 5500 + α(10)

α = - 400 rad/s2

Negative as it is deceleration.

The angle through which the grinding wheel rotates in the first second = θ

Time period = T1 = 1 sec

θ = ω₁T1 + αT1²/2

θ = (5500)(1) + (-400)(1)²/2

θ = 5300 rad

The angle through which the grinding wheel rotates in the first second =  <u>5300 rad</u>

Learn more about angular velocity here:-brainly.com/question/6860269

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5 0
1 year ago
What is the velocity of a narwhal that swims 76 kilometers North in 3 hours
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Answer:

<h3>25km/hr</h3>

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Velocity is the change in displacement of a body with respect to time.

Velocity - Displacement/time

Given

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Substitute the given parameters into the formula;

Velocity = 75km/3hrs

Velocity = 25km/hr

Hence the velocity of the narwhal is 25km/hr

4 0
3 years ago
how much energy is required to move a 4.00-microcoulomb charge through a potential difference of 36.0 volts?
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Answer:

All you gotta do is search it up. ask the same question you asked on here, type it into google, it'll teach you a lot more than your actual teachers.

Explanation:

4 0
3 years ago
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