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Paladinen [302]
3 years ago
13

A 300 kg car travels at 11 ms. What is the momentum

Physics
1 answer:
sweet-ann [11.9K]3 years ago
5 0
The momentum of a <span>300 kg car traveling at 11 ms is 3300 ms</span>
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Mixing of sand in water is an irreversible change true aur false​
USPshnik [31]

Answer:

<h3>true</h3>

Explanation:

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Cloudy nights can be warmer than clear nighys because clouds trap heat
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<span>Is it true that nighttime air temperatures on a cloudy night are lower than they would be on a clear night?</span>
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3 years ago
A piling for a high-rise building is pushed by two bulldozers at exactly the same time. One bulldozer exerts a force of 1250 pou
Ierofanga [76]

Answer:

Option d is correct.

The magnitude of the resultant force upon the piling = 2930 lbs.

Explanation:

Resultant of a group of forces = vector sum of the forces.

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Force 2 = (2650j) lbs

Resultant = (-1250î + 2650j) lbs

The magnitude of the resultant = √[(-1250)² + (2650)²] = 2930 lbs.

Or in visualization method, the two forces presented form a right angled triangle with the resultant of the two forces.

Hence, using Pythagoras theorem,

F₁² + F₂² = R²

(1250)² + (2650)² = R²

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7 0
3 years ago
which theory of plate movements involves magma rising all the way from the lower mantle to spread apart plates
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Read 2 more answers
In an electrical circuit 200mC of charge flows through a 50kohm resistor in 90 seconds. What is the power
ss7ja [257]

Answer: 0.2464\ W

Explanation:

Given

Charge Q=200\ mC

Resistance R=50\ k\Omega

Time t=90\ s

Charge is the amount of current flown in a particular time

Q=It\\\Rightarrow 200\times 10^{-3}=I\times 90\\\\\Rightarrow I=\dfrac{200\times 10^{-3}}{90}\\\\\Rightarrow I=2.22\times 10^{-3}\ A

Power is the given by P=I^2R

Insert values

\Rightarrow P=\left(2.22\times 10^{-3}\right)^2\times 50\times 10^3\\\\\Rightarrow P=246.42\times 10^{-3}\ W\\\\\Rightarrow P=0.2464\ W

The power is in the circuit is 0.2464\ W.

8 0
2 years ago
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