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Lady bird [3.3K]
2 years ago
7

Kepler’s first law states that:

Physics
1 answer:
Likurg_2 [28]2 years ago
6 0

Answer:

Kepler's first law means that planets move around the Sun in elliptical orbits. An ellipse is a shape that resembles a flattened circle. ... It is zero for a perfect circle.

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In a hard disk drive, a constant torque of 14 N⋅m is applied to the magnetic disk when the drive starts recording data. The magn
marshall27 [118]

The magnitude of the angular acceleration of the magnetic disk is determined as 35 rad/s².

<h3>Angular acceleration of the disk</h3>

The angular acceleration of the disk is determined from the principle of conservation of angular momentum as follows;

τ = Iα

where;

α is angular acceleration

I is moment of inertia of the disk

I = 0.5MR²

I = 0.5 x 0.2 x 2²

I = 0.4 kgm²

τ = Iα

α = τ/I

α = (14)/(0.4)

α = 35 rad/s²

Learn more about angular acceleration here: brainly.com/question/21278452

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7 0
2 years ago
A voltage amplifier needs a high input resistance and a low output resistance. Select one: True False
cupoosta [38]

Answer:

Explanation:

In electric circuit , the potential difference is always developed across the resistance .

Now is we are to amplify the voltage , that means low input voltage is converted into high voltage output .

Therefore we require low resistance at input for low voltage and high out put resistance for high output

Thus the statement given is wrong .

6 0
3 years ago
a large beaker of water is filled to its rim with water. a block of wood is then carefully lowered into the beaker until the blo
oksano4ka [1.4K]

The correct answer is Equal to the weight of the block.

We are aware that when an object floats, the water it displaces weighs the same as the weight of the floating body. The upthrust is now equivalent to the body weight in this situation. The beaker is overflowing with water in this instance. The body was then created to float into it. When it reaches equilibrium in water, it expels water that must have been the same weight as it. Over the edge, the liquid spilled, collecting on the tray.

Therefore, the amount of water gathered on the tray must match the weight of the person floating.

Learn more about weight here-

brainly.com/question/10069252

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5 0
2 years ago
I am pushing on a large box with 200N of force. Clint is pushing on the box with 200N of force in the opposite direction. Why wo
ipn [44]
Equal forces or balances forces cancel each other out. One side would have to have more force to move in the direction of least force.
5 0
3 years ago
Pls answer this
igor_vitrenko [27]

Answer:

37.8225 J

Explanation:

kinetic energy = 1/2 of mass x velocity^{2}

6 0
2 years ago
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