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timama [110]
3 years ago
7

Which field(s) are created by an electron when it moves?

Physics
2 answers:
Jet001 [13]3 years ago
7 0
Positive charge i think im right pls let me know   
amid [387]3 years ago
7 0
Dude thats a hard one give me a sec
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Find the equivalent resistance of this parallel circuit with two strands.
svlad2 [7]
In a parallel circuit, the total resistance calculated from the individual resistances is computed from the formula: 1/Rt = 1/R1 + 1/R2. substituting R1 and R2, then 
1/Rt = 1/7 + 1/49 
1/Rt = 1/6.125 = 1/ 49/8
Rt = 49/8 <span>Ω

The total resistance hence is </span>49/8 Ω
6 0
2 years ago
Questions:<br>(a) Why should the amplitude of oscillation be small on a pendulum experiment​
Snowcat [4.5K]
The formula for the pendulum experiment is based on the assumption that the amplitude is small so that the angle is approximately equal to the Sine of the angle.
5 0
3 years ago
As a pendulum swings back and forth __________.
Evgesh-ka [11]

Answer:

E. All of the above.

Explanation:

These are the equations for potential (PE) and kinetic energy (KE):

PE = m · g · h

Where:

m = mass of the object.

g = acceleration due to gravity.

h = height.

KE = 1/2 · m · v²

Where:

m = mass.

v = speed.

At the end points of its swings, the pendulum is at its maximum height and its velocity is zero (for an instant). Then all the energy at these points is potential (answer B).

As the pendulum swings back from the end point it starts to lose height and acquires kinetic energy until it reaches the lowest part of the of its swing. At this point, all the potential energy was transformed into kinetic energy. The potential energy will be zero (because the height is zero) and due to energy conservation, the energy that once was potential energy has to be transformed into some kind of energy, in this case, into kinetic energy (we assume there is no air resistance, in which case some energy would be transformed into thermal energy as well, i.e., heat). (answer A and D).

After the lowest point, the pendulum acquires height (potential energy increases) and, due to the acceleration of gravity, it starts to lose velocity (kinetic energy decreases). Due to conservation of energy, the increase in potential energy must be equal to the decrease in kinetic energy. The kinetic energy is transformed into potential energy (answer C).

Then, the answer is E. All answers are correct.

4 0
3 years ago
On a distance vs. time graph of an object's motion, distance is usually
sveta [45]
<span>the dependent variable 
<span>a variable (often denoted by y ) whose value depends on that of another.</span>

</span>
3 0
2 years ago
As a certain object falls, its position s (in meters) above ground after t seconds is given by s(t)=20-5t^2. Whats the average v
denpristay [2]
The average velocity of the object would be :

[s (1.5) - s (1)] /  0.5

= [8.75 -15] / 0.5

= 12.5 m/s

Hope this helps
3 0
3 years ago
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