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
Cerrena [4.2K]
3 years ago
7

The circuit below shows a silicon based transistor incorporated with a potential decider circuit to control the transistor. Dete

rmine the minimum value of the resistor, R1, required to switch the lamp L1 on​

Physics
1 answer:
Kazeer [188]3 years ago
7 0

Answer:

757.14 (2.d.p.)

Explanation:

CHECK THE IMAGE!! DEATHNOTE AT YOUR SERVICE. 12th Year Physics Kind Of Sucks!

You might be interested in
An electron is moving northward in a magnetic field. The magnetic force on the electron is toward the northeast. What is the dir
ira [324]

To solve this problem we will use the vector concept given by the cross product between two perpendicular vectors and which results in a vector perpendicular to these two. From the definition of the Magnetic Force we have to

\vec{F}=q(\vec{v}\times\vec{B})

From the property of cross product the magnetic force should point in the direction perpendicular to the plane containing the vectors v and B.

The direction of velocity is north, and the direction of the magnetic force is northeast.

This cannot be the case, as the direction of magnetic force is not perpendicular to the direction of velocity of the charge.

Therefore the correct option for the direction of the magnetic field is <em>"This situation cannot exist because of the relative orientations of the velocity and force vectors" </em>

7 0
3 years ago
Help!!! Asap!!!
KiRa [710]

Answer:

Probs paper cuz the rest are metals

4 0
2 years ago
Explain why color is a measure of a star’s temperature.
guajiro [1.7K]

Answer: The color of a star plays a significant role in determining its age as well as its temperature. A star normally appears to be shining as we see through the atmosphere. An increase in the temperature of a star releases more energy and this can be observed in the various colors of color spectrum.

The hottest star generally appears to be bluish-white in color whereas the coldest star usually appears to be reddish in color.

Thus, a star's color can help us determining its temperature.

3 0
3 years ago
2.5 years into minutes?<br><br>​
Mnenie [13.5K]
Is it 1314000 Or something
8 0
3 years ago
A rocket starts from rest and moves upward from the surface of the earth. For the first 10s of its motion, the vertical accelera
Naily [24]
Since the rocket’s acceleration is 3.00 m/s^3 * t, its acceleration is increasing at the rate of 3 m/s^3 each second. The equation for its velocity at a specific time is the integral of the acceleration equation. 

<span>vf = vi + 1.5 * t^2, vi = 0 </span>
<span>vf = 1.5 * 10^2 = 150 m/s </span>
This is the rocket’s velocity at 10 seconds. The equation for its height at specific time is the integral velocity equation

<span>yf = yi + 0.5 * t^3, yi = 0 </span>
<span>yf = 0.5 * 10^3 = 500 meters </span>
<span>This is the rocket’s height at 10 seconds. </span>

<span>Part B </span>
<span>What is the speed of the rocket when it is 345 m above the surface of the earth? </span>
<span>Express your answer with the appropriate units. </span>


<span>Use the equation above to determine the time. </span>

<span>345 = 0.5 * t^3 </span>
<span>t^3 = 690 </span>
<span>t = 690^⅓ </span>
<span>This is approximately 8.837 seconds. Use the following equation to determine the velocity at this time. </span>

<span>v = 1.5 * t^2 = 1.5 * (690^⅓)^2 </span>
<span>This is approximately 117 m/s. </span>


<span>The graph of height versus time is the graph of a cubic function. The graph of velocity is a parabola. The graph of acceleration versus time is line. The slope of the line is the coefficient of t. This is a very different type of problem. For the acceleration to increase, the force must be increasing. To see what this feels like slowly push the accelerator pedal of a car to the floor. Just don’t do this so long that your car is speeding!!</span>
3 0
4 years ago
Read 2 more answers
Other questions:
  • A volleyball is spiked so that its incoming velocity of +2.09 m/s is changed to an outgoing velocity of -24.6 m/s. The mass of t
    6·1 answer
  • Which element on the Periodic Table has fewer than 8 electrons but still has a full valence shell?
    8·2 answers
  • A horizontal spring with spring constant 85 N/m extends outward from a wall just above floor level. A 5.5 kg box sliding across
    11·1 answer
  • On the graph to the right, what is the total displacement during time interval 0s - 5s? (hint: the line does not start at 0)
    5·1 answer
  • Plz help
    12·2 answers
  • 60 POINTS model how sound produced by a singer is recorded by a microphone and reproduced by a speaker (sound model) WITH RUBIC
    12·1 answer
  • Dimension of density <br>​
    10·1 answer
  • If the strength of the magnetic field at B is 6 units, the strength of the magnetic field at A is _____.
    11·2 answers
  • a copper rod is sliding on two conducting rails that make an angle of 18 with respect to each other, as in the drawing. The rod
    11·1 answer
  • (b)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!