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Hunter-Best [27]
3 years ago
14

How do tornadoes end

Physics
2 answers:
lilavasa [31]3 years ago
8 0

Answer:

it ends when clouds above start to break apart. Some tornadoes only last seconds. Others can last much longer. They come in many shapes and sizes.

Vesnalui [34]3 years ago
8 0

Tornadoes are able to die off when they move over colder ground or when the cumulonimbus clouds above them start to break up. It is not completely understood as to how exactly tornadoes form, grow and die.

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A helicopter flies 168 miles against the wind in 2 hours; with the wind, it can fly 252 miles in the same amount of time. find t
posledela

Let v_h be the speed of the helicopter in still air. Let v_w be the speed of the wind. Then, from the given information,

(v_h-v_w)2=168\\ (v_h+v_w)2=252\\

Adding the above 2 equations,

4v_h=168+252\\ 4v_h=420\\ v_h=105

The speed of the helicopter in still air 105 \;mi/hour

6 0
3 years ago
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PLZ FAST Scientific knowledge is both long lasting and always _______.
Montano1993 [528]

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Answer=Changing......

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2 years ago
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A ball is launched from a 300m cliff and lands 380m away from the cliff in 9 seconds. Calculate the initual speed and the angle
Marysya12 [62]

Answer:

Explanation:

Given

Maximum height H = 300m

Range (horizontal distance) = 380m

Required

Initial speed U and the angle of the ball when it was launched.​

Range = U√2H/g

380 = U√2(300)/9.8

380 = U√600/9.8

380 = 7.8246U

U = 380/7.8246

U = 48.57m/s

The initial speed is 48.57m/s

b) Using the formula for calculating time of flight;

T = 2Usin theta/g

9 = 2(48.57)sin theta/9.8

9*9.8 = 97.14sin theta

88.2 = 97.14sin theta

88.2/97.14 = sin theta

sin theta = 0.9079

theta = sin^-1(0.9079)

theta = 65.23°

hence the angle when the ball was launched is 65.23°

6 0
2 years ago
The junction rule describes the conservation of which quantity? Note that this rule applies only to circuits that are in a stead
Fed [463]

Answer:

a) Current.

Explanation:

The "junction rule" (Kirchhoff's first law) says that the value of the electric current entering any point in the circuit must be the same as the one leaving it. This comes as a consequence of the conservation of charge, the electric charge that comes in must come out (when speaking about currents, per unit time).

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2 years ago
What does the x-axis on a distance v time graph represent?
ivolga24 [154]

Answer:

it represents the time

6 0
3 years ago
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