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3 years ago

An object is placed at O ona number line. It moves 3 units to the right, then 4 units to the left, and then 6 units to

Physics

2 answers:

kvv77 [185]3 years ago

6 0

Answer:

You have a displacement of 5 units to the right.

Explanation:

First you go three to the right which lands on the 3 mark. Then you move it 4 to the left which substracts 4, landing the object at -1. Finally you move 6 to the right, and you finish at marker 5. Since displacement is not total distance but just final distance from the start point directly to end point, it is only a displacement of 5.

Sauron [17]3 years ago

5 0

Answer:

I think it would be +5

Explanation:

I looked on a number line and started at 0.

I then moved the object 3 units to the right and got 3.

I then moved the object 4 units the the left and got -1.

I then moved the object 6 units to the right and my final answer was positive 5. (+5 or just 5)

I hope I was right and helped

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Answer:

False.

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3 years ago

An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad / s). If a particular disk is spun at 55

disa [49]

Answer:

Explanation:

Given

initial angular velocity $\omega _0=558.2 rad/s$

Time taken to stop $t=0.435 s$

using kinematic relation

$\omega =\omega _0+\alpha \cdot t$

here $\omega =$ final angualr velocity is zero because it is coming to rest

$\alpha =$ angular acceleration

thus $\alpha =-\frac{\omega _0}{t}$

$\alpha =-\frac{558.2}{0.435}=-1283.21 rad/s^2$

Magnitude is 1283.21 rad/s

If the diameter of disk $d=0.12 m$

then

radius $r=0.06 m$

Linear acceleration is givenby $\alpha \times r$

here radial distance is $\frac{1}{11}$ from center

thus $r'=\frac{r}{11}=\frac{0.06}{11}=0.00545$

$a_L=1283.21\times 0.00545=6.99 m/s^2$

7 0

3 years ago

Read 2 more answers

A ball on the end of a string is rotating with constant speed in a horizontal plane. When the ball is moving North it is located

joja [24]

Answer:

Option A

Explanation:

we can determine the direction of the angular velocity of a rotaing body by using the right hand rule.

The right hand rule says that if you hold the axis with your right hand and rotate the fingers in the direction of motion of the rotating body then your thumb will point the direction of the angular velocity.

Following this, curving the fingers in such a way that they depict motion from the east to north, we can see that our thumb will point upwards. This makes the direction of the angular velocity at that point in time to be up

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3 years ago