2 years ago

What is the resistance in a circuit that is connected to a 20 V battery and has a

Physics

1 answer:

Amanda [17]2 years ago

7 0

Answer:

$R = \displaystyle\frac{V}{I}$

$R = \displaystyle\frac{20}{75}$

$R = 0.267$ Ω (approx)

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Answer:

259.62521 seconds

Explanation:

$m_1$ = Mass of astronaut = 87 kg

$m_2$ = Mass of wrench = 0.57 kg

$v_1$ = Velocity of astronaut

$v_2$ = Velocity of wrench = 22.4 m/s

Here, the linear momentum is conserved

$m_1v_1=m_2v_2\\\Rightarrow v_1=\frac{m_2v_2}{m_1}\\\Rightarrow v_1=\frac{0.57\times 22.4}{87}\\\Rightarrow v_1=0.14675\ m/s$

Time = Distance / Speed

$Time=\frac{38.1}{0.14675}=259.62521\ s$

The time taken to reach the ship is 259.62521 seconds

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2 years ago

A car is travelling at 15 m/s on a horizontal road and stopped after 4 s. The coefficient of kinetic friction between the tires

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Answer:

Fr,= umg

umg= ma

a= v/t

umg= mv/t

u= v/gt= 0.38

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2 years ago

How much force is needed to accelerate a vehicle with a mass of 1000 kg at a rate<br> of 5 m/s2?

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The force needed to accelerate a vehicle with a mass of 1000kg at a rate of 5m/s2 would be 5000

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1 year ago

An object with a non-zero speed must be _________.

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It would be either A or C if its still moving and not stopping

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Answer: The answer is B

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