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3 years ago

For an answer to be completed the units need to be specified why?

Physics

1 answer:

Setler79 [48]3 years ago

3 0

Answer:

so you know the units in the problem and answer are the same, if they aren't you have to convert them to the same units.

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What is the gravitational force between Earth and a 10 kg object on Earth’s surface?

4vir4ik [10]

Answer:

The force between the Earth and the object is, F = 9.61 x 10⁻¹² N

Explanation:

Given data,

The mass of the Earth, M = 5.9 x 10²⁴ kg

The mass of the object, m = 10 kg

The gravitational force between the earth and the object is given by the formula,

F = G Mm/R²

Substituting the given values in the above equation,

F = 6.673 x 10⁻¹¹ x 5.9 x 10²⁴ x 10 / 6.4 x 10⁶

= 9.61 x 10⁻¹² N

Hence, the force between the Earth and the object is, F = 9.61 x 10⁻¹² N

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3 years ago

How is water introduced into rivers and streams?

mafiozo [28]

Rain fall which is called run off

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3 years ago

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How are chemicals brought into plants through the chemical cycle

vesna_86 [32]

Chemicals are brought in through photosynthesis

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3 years ago

What Is meant By MA of a machine is 2?

stich3 [128]

Answer:

See below ~

Explanation:

The Mechanical Advantage (MA) is defined as the ratio between the force produced by the machine to the force applied to it.

=============================================================

So,

⇒ $\frac{F(out)}{F(in)} = 2$

⇒ This means that the force produced is twice the applied force

7 0

2 years ago

A grinding wheel is spinning with an initial angular velocity +ω0. When its motor is turned off at t=0, it begins to slow down w

Olegator [25]

Answer:

Explanation:

Given

initial angular velocity is $\omega _0$

when motor is turned of it started decelerating with $-\alpha$ angular acceleration

angle turned before coming to halt

$\omega ^2-\omega _0^2=2(\alpha )\theta$

here final angular velocity is zero

$-\omega _0^2=-2\alpha \theta$

$\theta =\frac{\omega _0^2}{2\alpha }$

No of revolutions will be $N=\frac{\theta }{2\pi }$

$N=\frac{\omega _0^2}{4\pi \alpha }$

3 0

4 years ago