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2 years ago

An electric circuit can have no current when a switch is

Physics

1 answer:

Finger [1]2 years ago

6 0

Answer:

Open

Explanation:

A switch is a part of a circuit where a connection can be made or broken. By convention, when the switch is "open", the connection is broken and current cannot pass. When the switch is "closed", the connection is complete and current can pass.

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Smaller bits of rock that pass through the atmosphere and slam into Earth's surface are called

bezimeni [28]

I think that they are called meteorites

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2 years ago

A mysterious, bright, starlike object in the galaxy core?

11Alexandr11 [23.1K]

Im 70 percent sure that the right answer is chromosphere

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3 years ago

A 43 kg box is being pushed and pulled by

m_a_m_a [10]

Answer:

a = - 0.209 [m/s²]

Explanation:

To solve this problem we must use Newton's second law which tells us that the sum of forces on a body is equal to the product of mass by acceleration.

∑F = m*a

We will take the positive forces to the right and the negative forces to the left.

$155-277+113=43*a\\-9=43*a\\a = - 0.209[m/s^{2} ]$

The negative sign means that the box accelerates in a negative direction to the left.

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3 years ago

If a bale of hay behind the target exerts a constant friction force, how much farther will your arrow burry itself into the hay

LenaWriter [7]

Answer:

The arrow will bury itself farther by 3S₁

Explanation:

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lets assume; the Arrow shot by me has a speed twice the speed of the arrow fired by the younger shooter

Given that ; acceleration is constant , Frictional force is constant

A₂ = A₁

Vf²₂ - Vi²₂ / 2s₂ = Vf₁² - Vi₁² / 2s₁ ---- ( 1 )

final velocities = 0

Initial velocities : Vi₂ = 2(Vi₁ )

Back to equation 1

0 - (2Vi₁ )² / 2s₂ = 0 - Vi₁² / 2s₁

hence :

s₂ = 4s₁

hence the Arrow shot by me will burry itself farther by :

s₂ - s₁ = 3s₁

<em>Note : S1 = distance travelled by the arrow shot by the younger shooter</em>

8 0

2 years ago

What effect would the temperature have on the time kept by a pendulum clock if the pendulum rod increase in length with an incre

Allushta [10]

As we know the time period of pendulum is given by the equation

$T = 2\pi \sqrt{\frac{L}{g}}$

so here

L = length of the pendulum

Now on increasing the temperature due to thermal expansion the length of the pendulum will increase and due to this the time period of the pendulum will also increase

Now due to increase in time period of the pendulum the clock will become slow and it will give incorrect time due to this increase in temperature

6 0

2 years ago

Read 2 more answers