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disa [49]
3 years ago
6

Una rueda arranca desde el reposo y después de girar 30 revoluciones, alcanza una velocidad de 15 rad/s. Calcular:

Physics
1 answer:
laila [671]3 years ago
4 0
ТОСКВВЛЛЛлвшашул еле бюыьлывюшьк шащалага из-за ш :)
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The position of a particle is given by ~r(t) = (3.0 t2 ˆi + 5.0 ˆj j 6.0 t kˆ) m
Julli [10]

Answer:

v=(6ti+6k)\ m/s

Explanation:

Given that,

The position of a particle is given by :

r(t) = (3.0 t^2 i + 5.0j+ 6.0 tk) m

Let us assume we need to find its velocity.

We know that,

v=\dfrac{dr}{dt}\\\\=\dfrac{d}{dt}(3.0 t^2 i + 5.0j+ 6.0 tk) \\\\=(6ti+6k)\ m/s

So, the velocity of the particle is (6ti+6k)\ m/s.

5 0
3 years ago
Help please!!!!!!!!!!!!
rodikova [14]
Burning wood would be the answer
7 0
3 years ago
Read 2 more answers
PLEASE ANSWER FAST In which of the following situations is the greatest amount of work accomplished? 1. A boy lifts a 2-newton b
GuDViN [60]

Explanation:

Work done is given by the product of force and displacement.

Case 1,

1. A boy lifts a 2-newton box 0.8 meters.

W = 2 N × 0.8 m = 1.6 J

2. A boy lifts a 5-newton box 0.8 meters.

W = 5 N × 0.8 m = 4 J

3. A boy lifts a 8-newton box 0.2 meters.

W = 8 N × 0.2 m = 1.6 J

4. A boy lifts a 10-newton box 0.2 meters.

W = 10 N × 0.2 m = 2 J

Out of the four options, in option (2) ''A boy lifts a 5-newton box 0.8 meters'', the work done is 4 J. Hence, the greatest work done is 4 J.

3 0
3 years ago
Why do the lights in your home come on almost instantaneously when you turn on the switch?
arlik [135]

Answer:

here you go

Explanation:

Why do your lights actually come on almost instantaneously? ... Wiring the house in parallel does not make a difference – there is no current flowing through the light bulb when the switch is off no matter how the house is wired. If there were a current already, the light would be on!

4 0
3 years ago
An atomic scientist was studying an atom and through experimentation found that the total negative charge of the
Artist 52 [7]

Answer:

This atom has nine electrons

Explanation:

I just did it and I got it right.

7 0
4 years ago
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