1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
WINSTONCH [101]
3 years ago
7

une lampe soumise à une tension continue de 12V , consomme unepuissance de 1.8 W. L'intensité du courant traversant la lampe est

quoi
Physics
1 answer:
Eduardwww [97]3 years ago
6 0

Answer:

I = 0.15 A

Explanation:

The question is "a lamp subjected to a continuous voltage of 12V , consumes a power of 1.8 W. The intensity of the current passing through the lamp is what"

Given that,

Power of the lamp, P = 1.8 W

Voltage, V = 12 V

We need to find the current through the lamp. The power of the lamp is given by :

P=V\times I\\\\I=\dfrac{P}{V}\\\\I=\dfrac{1.8}{12}\\\\I=0.15\ A

So, the current through the lamp is 0.15 A.

You might be interested in
Technician a says that shims are sometimes used to adjust camber. technician b says that shims can sometimes be used to adjust c
meriva

I'll have to be honest with you.  I've read both of those opinions several times, carefully, and it looks to me like both technicians are saying exactly the same thing.

Now, my knowledge of shims and camber is limited (to approximately zero), so all I can say to answer the question is this:  If EITHER technician is correct, then they're BOTH correct.

8 0
4 years ago
Protons are found only in the atomic nucleus.<br> TRUE<br> FALSE
timama [110]

Answer:True

Explanation:

4 0
3 years ago
Read 2 more answers
One strategy in a snowball fight is to throw a snowball at a high angle over level ground. Then, while your opponent is watching
agasfer [191]

Answer:

  22.5°

Explanation:

<u>Short answer</u>: The trajectories will hit the same target when the projectile is launched at complementary angles. The second angle is 90° -67.5° = 22.5°.

__

<u>Longer answer</u>: The horizontal speed of the snowball launched at angle α with speed s is ...

  vh = s·cos(α)

Then the horizontal distance at time t is ...

  x = vh·t

and the time taken to get to some distance x is ...

  t = x/vh = x/(s·cos(α))

The equation for the vertical motion of the projectile is ...

  y = -4.9t² +s·sin(α)·t

Substituting the above expression for t, we have y in terms of x:

  y = -4.9x²/(s·cos(α))² +(s·sin(α)·x)/(s·cos(α))

Factoring gives ...

  y = (x/(cos(α))(-4.9x/(s²·cos(α)) +sin(α))

The height y will be zero at x=0 and at ...

  0 = -4.9x/(s²·cos(α)) +sin(α)

  x = s²·sin(α)·cos(α)/4.9 = (s²/9.8)sin(2α)

So, for some alternate angle β, we want ...

  sin(2α) = sin(2β)

We know this will be the case for ...

  2β = 180° -2α

  β = 90° -α

The second snowball should be thrown at an angle of 90°-67.5° = 22.5° to make it hit the same point as the first.

3 0
3 years ago
The motion of a particle along a straight line is described by the equation x=6+4t2 -t 4 , where x is in meter and t is in secon
Aleks [24]

Answer:

The position of the particle is 6m

The velocity of the particle is 16 m/s in negative direction

The acceleration of the object is -40 m/s²

Explanation:

Given;

motion of the particle along a straight line as x = 6 + 4t² - t⁴

The position of the object when t = 2s

x = 6 + 4(2)² - (2)⁴

x = 6 + 16 - 16

x = 6m

The velocity of the object when t = 2s

Velocity = dx/dt

dx/dt = 8t - 4t³

when t = 2s

Velocity = 8(2) - 4(2)³

Velocity = 16 - 32

Velocity = -16m/s

Velocity = 16 m/s (in negative direction)

The acceleration of the object when t = 2s

Acceleration = d²x/dt² = 8 - 12t²

Acceleration = 8 - 12 (2)²

Acceleration =  -40 m/s²

5 0
4 years ago
The direction of centripetal force is away from the axis of rotation.
Arada [10]
I’m pretty sure it’s true x
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which sentence describes Newton's second law?
    9·1 answer
  • A train started from rest and moved with constant acceleration. At one time it was traveling 30 m/s, and 160 m farther on it was
    14·1 answer
  • Explain the difference between kingdom and a species
    15·1 answer
  • How does superposition provide evidence for the evolution of earth?
    9·1 answer
  • you press on the cqartiod ortery in your neck and begin counting . what are you mostly likely measuring?
    14·1 answer
  • If your emotional energy is low, your attitude will likely what ?
    14·1 answer
  • What process is represented by this redox equation ? 6H 2 O+6CO 2 C 6 H 12 O 6 +6O 2
    15·1 answer
  • Distance is 80 seconds is 8 what is the average speed?
    5·1 answer
  • Calculate the average power produced when a car of mass 400 kg accelerates from rest to a speed of 20m/s in a time interval of 1
    5·1 answer
  • When a medium is disturbed by a wave, does it move with the wave?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!