The total energy of a 0.050 kg object travelling at 0.70 c is:
2 answers:
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Answer:
The riders are <u>radially</u> accelerating.
Explanation:
The Ferris wheel is making a circular motion. If it is moving with constant velocity, than the acceleration is
towards the center of the wheel.
So, the riders are subject to a constant and radial acceleration, which is called the centripetal acceleration.
<h2>Answer:</h2>
0.5Ω
<h2>Explanation:</h2>Since different currents are passing through the resistors, then the resistors are most probably connected in parallel. This also means that the same voltage will pass across them.
Using Ohm's law, the voltage across a resistor in a circuit is given by;
V = I(R + r) -----------(i)
<em>For the 1ohm resistor, the voltage across it is given by;</em>
<em>Where;</em>
I = current passing through the 1 ohm resistor = 0.6A
R = resistance of the 1 ohm resistor = 1Ω
r = internal resistance of the cell = r
Substitute these values into equation (i) as follows;
V = 0.6(1 + r) -------------------(ii)
<em>For the 4.0ohm resistor, the voltage across it is given by;</em>
<em>Where;</em>
I = current passing through the 4.0 ohms resistor = 0.2A
R = resistance of the 4.0 ohms resistor = 4.0Ω
r = internal resistance of the cell = r
Substitute these values into equation (i) as follows;
V = 0.2(4.0 + r) -------------------(iii)
<em>Now solve equations (ii) and (iii) simultaneously;</em>
V = 0.6(1 + r)
V = 0.2(4.0 + r)
Substitute the value of V in equation (ii) into equation (iii). Therefore, we have;
0.6(1 + r) = 0.2(4.0 + r)
<em>Solve for r</em>
0.6 + 0.6r = 0.8 + 0.2r
0.6r - 0.2r = 0.8 - 0.6
0.4r = 0.2
r =
r = 0.5
Therefore, the internal resistance of the cell is 0.5Ω