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Brilliant_brown [7]
3 years ago
9

Based on Newton’s First Law, what would you expect to happen to a block that is pushed across ice and begins moving (You may ass

ume there is no friction for this scenario? What would be necessary to cause the block to stop moving?
Physics
2 answers:
allsm [11]3 years ago
5 0
I think an unbalanced force too.

Montano1993 [528]3 years ago
3 0
An unbalanced force.
Newton's first law states that an object in motion will stay in motion until a unbalanced force acts upon it.
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Which of the following describes resistance force?
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3 years ago
Using the law of conservation of angular momentum, estimate how fast a collapsed stellar core would spin if its initial spin rat
Nataly_w [17]

Answer:

\omega_{f} = 1000000\,\frac{rev}{day}

Explanation:

The law of conservation of angular momentum states that angular momentum remains constant when there is no external moment or forces applied to the system. Let assume that star can be modelled as an sphere, then:

\frac{2}{5}\cdot M\cdot R_{o}^{2} \cdot \omega_{o} = \frac{2}{5}\cdot M\cdot R_{f}^{2} \cdot \omega_{f}

The final angular speed is:

\omega_{f} = \omega_{o}\cdot (\frac{R_{o}}{R_{f}})^{2}

\omega_{f} = (1\,\frac{rev}{day} )\cdot (\frac{10000\,km}{10\,km} )^{2}

\omega_{f} = 1000000\,\frac{rev}{day}

3 0
2 years ago
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solniwko [45]

Answer:

i cant solve this!

Mybe i can solve another question!

3 0
2 years ago
The resultant of 2 forces at right angles is 100 lbs. If one of the forces makes an angle of 30 degress with the resultant, comp
Ipatiy [6.2K]

Answer:

86.6 lbs

Explanation:

Let the force is X.

Resultant force, R = 100 lbs

Other force is Y. Angle between resultant force and force X is 30°.

According to the diagram

Cos30=\frac{X}{R}

0.866=\frac{X}{100}

X = 86.6 lbs

Other force Y

Sin30=\frac{X}{R}

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Y = 50 lbs

5 0
3 years ago
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