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Marat540 [252]
4 years ago
11

A car initially traveling at 32.4 m/s undergoes a constant negative acceleration of magnitude 1.70 m/s2 after its brakes are app

lied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.330 m?
Physics
1 answer:
8090 [49]4 years ago
8 0
<h2>The car tire makes 149 revolutions before coming to stop.</h2>

Explanation:

a) We have equation of motion v² = u² + 2as

Initial velocity, u = 32.4 m/s  

Acceleration, a = -1.70 m/s²  

Final velocity, v = 0 m/s  

Substituting  

v² = u² + 2as

0² = 32.4² + 2 x -1.70 x s

s = 308.75 m  

Distance traveled before stopping is 308.75 m

Radius of tire = 0.330 m

Circumference of tire = 2πx 0.33 = 2.07 m

1 revolution = 2.07 m

\texttt{Number of revolutions = }\frac{308.75}{2.07}=148.91

The car tire makes 149 revolutions before coming to stop.

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Is this your Question:

Read the hypothetical situation below and answer the question that follows.

In response to criticisms that the King of Mordor has failed to gain the consent of his people, the King claims that he does in fact represent the consent of the people because without their King, society would crumble into chaos.

Which statement BEST represents a rebuttal that Rousseau would use to counter the King's argument?

A. Absolute chaos is preferable to the absolute power of the King.

B. The King of Mordor should establish a system of checks and balances.

C. If the King of Mordor were to represent the will of his people, then he would at least provide the public services demanded by his people.

D. It is impossible for the King of Mordor to have the consent of the people because the monarchy is not a freely formed government in which the people have a say in how it operates.

If this is your question.. Here is your Answer:

Answer:  D. It is impossible for the King of Mordor to have the consent of the people because the monarchy is not a freely formed government in which the people have a say in how it operates.

Explanation:

Rousseau believed that sovereignty (the power to make laws) belonged to the people, not one person, and that it should be carried out by a representative body of the people who are elected by them on their behalf. While he agreed society requires a ruler(s), he thinks they should be chosen by the people.  

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The barometer of a mountain hiker reads 930 mbars at the beginning of a hiking trip and 780 mbars at the end. Neglecting the eff
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We could use the change of pressure to calculate for the height climbed by the mountain hiker. The change of pressure is given by

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pashok25 [27]
We are given with the following:
L = 25 cm
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And we are asked for the emf induced in the rod
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How are magnetic poles and electrical charges similar? A. Their same forces repel each other, and their opposite forces attract
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Answer:

A. Their same forces repel each other, and their opposite forces attract each other.

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