Answer:
Since the wire is not splitting at any point in the circuit,
the resistors are in series
Hence, Equivalent resistance = 10 + 20 + 30
Equivalent Resistance = 60 Ω
Forces of gravity depend on quantities of mass, whereas electrical forces depend on quantities of net charge.
If gravitational forces dominate over electrical forces, it can only be because the amounts of net charge involved are much much much much much smaller than the amounts of mass involved.
What I'm saying is ... this doesn't mean that there aren't huge amounts of electric charge present in stars, planets, comets, and other astronomical objects. But most of the charges are BALANCED ... there are equal amounts of positive and negative charge present in the same object, and there's very little of either kind <em>left over,</em> to be attracted or repelled by other objects.
Answer:
<em>The range is 15.15 m and the time in the air is 1.01 s</em>
Explanation:
<u>Horizontal Motion</u>
When an object is thrown horizontally (with angle 0°) with a speed v from a height h, it follows a curved path ruled exclusively by gravity until it eventually hits the ground.
The range or maximum horizontal distance traveled by the object can be calculated as follows:
To calculate the time the object takes to hit the ground, we use the equation below:
The cannon is shot from a height of h=5 m with an initial speed of v=15 m/s. The range is calculated below:
d = 15.15 m
The time in the air is:
t = 1.01 s
The range is 15.15 m and the time in the air is 1.01 s
Answer: 96.93%
Explanation: The basic equation for the rate of steady conduction heat transfer is called Fourier's Law of Conduction.
Mathematically:
<em>where:</em>
- <em>q= rate of heat transfer</em>
- <em>k= thermal conductivity of the material (negative sign just denotes that the heat transfer occurs in a direction of decreasing temperature)</em>
- <em>dT= temperature difference across the surface (which drives the heat transfer)</em>
- <em>A= surface area through which the heat transfer occurs</em>
- <em>dx= thickness of the material through which heat gets transferred</em>
In this question we have two materials through which heat transfer occurs through a wall, one is the Styrofoam of which the wall is made and the other is the glass pane of window.
<u>According to the language of question we consider that we are given the area of Styrofoam after removing the area of glass window pane on it, otherwise we would subtract the area of glass pane from the area of wall.</u>
Given data:
- area of glass,
- thickness of glass,
- thermal conductivity of glass,
- area of Styrofoam,
- thickness of Styrofoam,
- thermal conductivity of Styrofoam,
<em>Heat transfer through the glass pane of window:</em>
Putting the given values in Fourier's eqn.
<em>Heat transfer through the Styrofoam wall:</em>
Total heat transfer 'q':
q= 61.005(dT) W
Now,
% of Heat lost by window=
=96.93%
Answer:
a. Find the numerical value of the change of the electric potential energy
Explanation: