3 years ago

Compare and contrast tornadoes and hurricanes

1 answer:

8 0

The similarity between tornadoes and hurricanes is they both contain strong rotating winds that can cause damage. The parent storm clouds are much larger for a hurricane than a tornado, a tornadoes "life" is a lot shorter than a hurricane, etc.

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A girl throws a rock horizontally at 10 m/s from the top of a building, 22 m above street level. Assuming free fall conditions a

MAXImum [283]

Answer:21.18 m

Explanation:

Given

initial speed u=10 m/s

height of building h=22 m

time taken to complete 22 m

$h=ut+\frac{1}{2}at^2$

initial vertical velocity =0

$22=\frac{1}{2}gt^2$

$t=\sqrt{\frac{22\times 2}{g}}$

$t=2.11 s$

Horizontal Distance moved

$R=u_x\times t$

$R=10\times 2.11$

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2 years ago

At what speed does a 1400 compact car have the same kinetic energy as a 20000 truck going 25 ?

kumpel [21]

K=1400*V^2/2
K=20000*25^2/2. => 1400*V^2/2=20000*25^2/2 <=> 1400*V^2=20000*25^2
14*V^2=200*225
v^2=100*225/7
v=250/7^(1/2)

Answer: 250*7^(1/2)/7

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2 years ago

Most of the mass of the milky way exists in the form of.

Andrews [41]

Answer: Dark matter.

Explanation: Hope it helps :)

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2 years ago

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A 4 V power source is connected in parallel to four resistors: 1, 2, 2, and 3. Find the total current.

Keith_Richards [23]

Answer:

Explanation:

Equivalent resistance is 1 / ((1/1) + (1/2) + (1/2) + (1/3)) = 3/7 Ω

I = V/R = 4(7/3) = 28/3 = 9.3 A

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2 years ago

Someone please help! It is a few science questions. Fairly easy!

borishaifa [10]

1) $0.92 * 100 = 92$ <Solve using the formula which is:
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2) $3.98 ml$

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$5*2*4=40$
$\frac{300}{40} =7.5$ (Answer=7.5)

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3 years ago

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