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valina [46]
3 years ago
15

PLZ HELP!!!!!!!!!!!!!

Physics
1 answer:
Sonja [21]3 years ago
3 0

Answer:

The answer is D

Explanation:

Because the car is accelerating (moving) south at a speed of 45. Hope this helps for you. :)

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If a substance can be separated by physical means and it is not the same throughout, what is it.
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The answer is Heterogeneous (B) I did the lesson and took the quiz today.

Explanation:

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A shadow from a surgeon's hand obstructs your view while operating. Make suggestions for an alternative light source that avoids
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B...................

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As a diligent physics student, you carry out physics experiments at every opportunity. At this opportunity, you carry a 1.01 m l
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Answer:

The strength of the magnetic field is 75.6\ \mu T.

Explanation:

Given that,

Length of the rod, L = 1.01 m

Speed with which the rod is moving, v = 3.47 m/s

We need to find the strength of the magnetic field that is perpendicular to both the rod and your direction of motion and that induces an EMF of 0.265 mV across the rod. When the rod is moving with some speed, an emf gets induced and it is given by :

\epsilon=Blv

B is magnetic field

B=\dfrac{\epsilon}{lv}\\\\B=\dfrac{0.265\times 10^{-3}}{1.01\times 3.47}\\\\B=75.6\ \mu T

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which element are you most likely to find as a free element rather than a compound lead or calcium, explain?
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A dentist’s drill starts from rest. After 3.20 s of constant angu-lar acceleration, it turns at a rate of 2.51 3 104 re v/m i n.
Gekata [30.6K]

Answer:

ΔTita = 4205.6 rad

Explanation:

w_{i} means initial angular velocity, which is 0 rev/min

w_{f} means final angular velocity, which is 2.513*10^{4}rev/min

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one revolution is equivalent to 2πrad so the final angular velocity is:

w_{f} = (2π/60) *2.513*10^{4} rad/s

w_{f}= 2628.5 rad/s

so the angular acceleration, α will be:

α = 2628.5 rad/s / 3.20 s

a = 821.40 rad/s^{2}

so the rotational motion about a fixed axis is:

w^{2} _{f} =w^{2} _{i} + 2αΔTita    where ΔTita is the angle in radians

so now find the ΔTita the subject of the formula

ΔTita = \frac{w^{2} _{f}-w^{2} _{i}  }{2a}

ΔTita = ((2628.5)^{2} - (0 rev/min)^{2}) / 2* 821.40

ΔTita = 4205.6 rad

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3 years ago
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