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Viktor [21]
4 years ago
7

Thunderstorms are violent _________ storms accompanied by thunder and lightning.

Physics
1 answer:
Phoenix [80]3 years ago
7 0

Thunderstorms are violent convective storms accompanied by thunder and lightning.

<span>Thunderstorms are convective storms because it is an effect when there is an intense heating in the Earth’s atmosphere that causes parcels of moist air that rises to the surface of the Earth all throughout the atmosphere. A convective storm also causes tornadoes.</span>

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A car accelerates uniformly from rest to 23 m/s over a distance of 30 meters. What is the acceleration of the car?
kolezko [41]

Answer:

a= 17.69 m/s^2

Explanation:

Step one:

given data

A car accelerates uniformly from rest to 23 m/s

u= 0m/s

v= 23m/s

distance= 30m

Step two:

We know that

acceleration= velocity/time

also,

velocity= distance/time

23= 30/t

t= 30/23

t= 1.30 seconds

hence

acceleration= 23/1.30

accelaration= 17.69 m/s^2

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seraphim [82]

Answer:

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Hunter-Best [27]

Answer:

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3 years ago
A raft of mass 199 kg carries two swimmers of mass 52 kg and 70 kg. The raft is initially floating at rest. The two swimmers sim
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To solve this problem we will apply the concept related to the conservation of the Momentum. We will then start considering that the amount of initial momentum must be equal to the amount of final momentum. Considering that all the objects at the initial moment have the same initial velocity (Zero, since they start from rest) the final moment will be equivalent to the multiplication of the mass of each object by the velocity of each object, so

Initial Momentum = Final Momentum

(m_B+m_1+m_2)v_i = m_1v_1+m_2v_2+m_Bv_B

Here,

m_B =  mass of Raft

m_1 = Mass of swimmers 1

m_2 = Mass of swimmers 2

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v_B = Velocity of Raft

Replacing,

(199+52+70)*0 = (52)(4)+(70)(-4)+199v_B

Solving for v_B

vB = \frac{72}{199}

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5 0
4 years ago
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