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3 years ago

(PLEASE answer ASAP, Will give brainliest)

Physics

1 answer:

Rina8888 [55]3 years ago

5 0

Answer:

v²=u²+2as

0²=(7.8)²+2×9.8×s

s=60.84/19.6=3.1m she travel 3 .1m high.

weight=m×g=

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Answer:

$d = 2.26 km$

Explanation:

Let the child is moving with speed same as the speed of water flow

So here the position of child with respect to flow must be zero

And if the boat start at an angle with the vertical

so its relative speed with flow of water is given as

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3 years ago

In the areas called pauses such as the tropopause, the temperature line is vertical. What does this indicate about the temperatu

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Answer:

the answer is A

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3 years ago

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Maximum voltage produced in an AC generator completing 60 cycles in 30 sec is 250V. (a) What is period of armature? (b) How many

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Answer:

a. 2 Hz b. 0.5 cycles c . 0 V

Explanation:

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Since it takes the armature 30 seconds to complete 60 cycles, and frequency f = number of cycles/ time = 60 cycles/ 30 s = 2 cycles/ s = 2 Hz

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The period, T = 1/f = 1/2 Hz = 0.5 s.

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Since it takes 0.5 s to complete 1 cycle, then the number of cycles it completes in 0.25 s is 0.25/0.5 = 0.5 cycles.

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Since the emf E = E₀sinθ and when θ = 180°, sinθ = sin180° = 0

E = E₀ × 0 = 0

E = 0

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Two objects of mass m move in opposite directions toward each other. The green object moves at velocity v, and the blue object m

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A 103 kg physics professor has fallen into the Grand Canyon. Luckily, he managed to grab a branch and is now hanging 93 m below

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Answer:

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