3 years ago

When radioactive atoms decay, they give off radiation and ___ . A. heat energy B. poisonous gases C. ridge pushes D. p waves

Physics

2 answers:

expeople1 [14]3 years ago

7 0

D. P waves. gives you cancer

Sunny_sXe [5.5K]3 years ago

5 0

D pwave is the answer and thx

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Answer:

Part a)

$H = 44.1 m$

Part b)

$y = 13.48 m$

Part c)

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Explanation:

Part a)

As we know that ball will reach at maximum height at

t = 3 s

now we will have

$t = \frac{v sin\theta}{g}$

now we have

$3 = \frac{vsin\theta}{9.8}$

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Now maximum height above ground is given as

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$H = 44.1 m$

Part b)

Height of the fence is given as

$y = (vsin\theta) t - \frac{1}{2}gt^2$

$y = (29.4)(5.5) - \frac{1}{2}(9.8)(5.5^2)$

$y = 13.48 m$

Part c)

As we know that its horizontal distance moved by the ball in 5.5 s is given as

$x = v_x t$

$97.5 = v_x (5.5)$

$v_x = 17.72 m/s$

now total time of flight is given as

$T = 3 + 3 = 6 s$

so range is given as

$R = v_x T$

$R = (17.72)(6)$

$R = 106.4 m$

so the distance from the fence is given as

$d = 106.4 - 97.5$

$d = 8.86 m$

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