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andreev551 [17]
3 years ago
7

6. Which of the following statements is true for displacement ?

Physics
1 answer:
Lostsunrise [7]3 years ago
4 0

Both are false..........

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A battery of e.m.f. 10 V is connected to resistance as shown in figure. The potential
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D correct answer for que
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A 0.22 kg air track glider moving at 0.60 m/s a collides elastically into a 0.44 kg glider at rest. After collision the 0.22 kg
motikmotik
The glider collides elastically  an another glider at rest, in this case we have the coservation of quantity of movement 

m1 v1  + m2 v2 = m1V1 + m2 V2
v is the velocity before the shock, V the velocity after the shock
m1=0.22
v1=0.60m/s
m2=0.44
V1=-0.20m/s
remark that <span>0.44 kg glider is initially at rest, so v2= 0
the equation above can be written  </span><span>m1 v1  = m1V1 + m2 V2 ( because v2=0 at rest)
</span><span>m1 v1  = m1V1 + m2 V2 implies  V2= (m1v1 -m1V1) / m2
</span>
V2=0.22x0.60 -0.22x (-0.20) ] / 0.44= 0.4m/s
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3 years ago
Francis Bacon created a new way of scientific thinking called inductive reasoning. How was this different from the deductive rea
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Scientists now gathered information and facts before creating a theory.


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(This is a non-relativistic warm-up problem, to get you to think about reference frames.) A girl throws a baseball upwards at ti
____ [38]

Answer:

X(t) = 9.8 *t - 4.9 * t^2

Explanation:

We set a frame of reference with origin at the hand of the girl the moment she releases the ball. We assume her hand will be in the same position when she catches it again. The positive X axis point upwards.The ball will be subject to a constant gravitational acceleration of -9.81 m/s^2.

We use the equation for position under constant acceleration:

X(t) = X0 + V0 * t + 1/2 * a *t^2

X0 = 0 because it is at the origin of the coordinate system.

We know that at t = 2, the position will be zero.

X(2) = 0 = V0 * 2 + 1/2 * -9.81 * 2^2

0 = 2 * V0 - 4.9 * 4

2 * V0 = 19.6

V0 = 9.8 m/s

Then the position of the ball as a function of time is:

X(t) = 9.8 *t - 4.9 * t^2

5 0
3 years ago
As a rubber band and moves forward, which of the following is true
Yuki888 [10]

Answer:

It can go back to it's original shape

Explanation:

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