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2 years ago

Is this right?? please help me. IT IS SOCIOLOGY!!

Physics

2 answers:

Westkost [7]2 years ago

8 0

Answer:

Yes, it is correct : )

Explanation:

Hope this helps!

ra1l [238]2 years ago

5 0

Answer:

yes, this is correct.

Explanation:

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A photon has 3.4 × 10–18 joules of energy. Planck’s constant is 6.63 × 10–34 J•s.

hodyreva [135]

Ok i will answer for real this time. Please give me brainliest.
The Answerr is:
5.12*10^15. Since e=h*f, f=e/h. 3.4*10^(-18)/h.
i am so sorry i was doing a challenge and i needed answers to get 100 pts.
Hope I Helped
~TeenOlafLover <3

5 0

3 years ago

Suppose we measure the energy stored in some inductor to be E when there is a current I running through it. If I double the curr

slavikrds [6]

Answer:

If I double the current in the inductor, the new total energy will become 4E (option f).

Explanation:

The coil or inductor is a passive component made of an insulated wire that stores energy in the form of a magnetic field due to its form of coiled turns of wire, through a phenomenon called self-induction. In other words, inductors store energy in the form of a magnetic field. The energy stored in the space where there is a magnetic field in the inductor is:

$E=\frac{1}{2} *L*I^{2}$

where E is Energy [J], L is Inductance [H] and I is Current [A].

If you double the current in the inductor, then the new value of the current is I'= 2*I. So replacing the new total energy is:

$E'=\frac{1}{2} *L*I'^{2}=\frac{1}{2} *L*(2*I)^{2}=\frac{1}{2} *L*4*I^{2}=4*\frac{1}{2} *L*I^{2}$

Then:

$E'=4*E$

If I double the current in the inductor, the new total energy will become 4E (option f).

3 0

3 years ago

Jessica does not like how her BestFriend has been treating her around others. When confronted, the friend says Jessica is being

Eva8 [605]

She is sad and feels left out because they are treating her badly. Hope this helps :)

7 0

3 years ago

You're in the middle of moving and need to bring furniture and into your new house. You want to prop the door open, but your dog

Mamont248 [21]

Answer:

C) Put the brick as far from the hinges as possible

Explanation:

As torque is the product of the force around the rotation point and the distance to the pivot point, and the mass (force) of the brick stays constant, what we can do to maximize the torque is maximize the distance to the pivot point, aka the hinge. So we should put the brick as far from the hinges as possible.

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3 years ago

You're designing an airport.A plane that will use this airport must reach a speed of Vmin=100km/h(27.8m/s).It can accelerate at

Ilia_Sergeevich [38]

As here it is given that

x = 150 m

a= 2 m/s^2

now initial speed of the plane must be zero as it start from rest

now we will use kinematics

$v_f^2 - v_i^2 = 2 a x$