Part 1)
Answer:
Explanation:
As we know by equation of charging of the capacitor we will have
![V = E(1 - e^{-t/RC})](https://tex.z-dn.net/?f=V%20%3D%20E%281%20-%20e%5E%7B-t%2FRC%7D%29)
so we will have
![87 = 105(1 - e^{-t/RC})](https://tex.z-dn.net/?f=87%20%3D%20105%281%20-%20e%5E%7B-t%2FRC%7D%29)
here we know that
![R = 3.00 \times 10^6 ohm](https://tex.z-dn.net/?f=R%20%3D%203.00%20%5Ctimes%2010%5E6%20ohm)
![C = 0.250 \mu F](https://tex.z-dn.net/?f=C%20%3D%200.250%20%5Cmu%20F)
so we have
![t = 1.32 s](https://tex.z-dn.net/?f=t%20%3D%201.32%20s)
Part b)
Answer:
The time will increase.
Explanation:
As we know that on increasing the value of the resistance the the product of the resistance and capacitance will increase so the time will increase to get the above voltage.
Part c)
Answer:
The capacitor discharges through a very low resistance (the lamp filled with ionized gas), and so the discharge time constant is very short. Thus the flash is very brief.
Explanation:
Since the lamp resistance is very small so the energy across the lamp will totally lost in very short interval of time
Part d)
Answer:
Once the lamp has flashed, the stored energy in the capacitor is gone, and there is no source of charge to maintain the lamp current. The lamp "goes out", the lamp resistance increases, and the capacitor starts to recharge. It charges again and the process will repeat.
Explanation:
Since we know that the battery is connected to the given system so after whole energy of capacitor is flashed out it is again charged by the battery and the process will continue
When the body touches the ground two types of Forces will be generated. The Force product of the weight and the Normal Force. This is basically explained in Newton's third law in which we have that for every action there must also be a reaction. If the Force of the weight is pointing towards the earth, the reaction Force of the block will be opposite, that is, upwards and will be equivalent to its weight:
F = mg
Where,
m = mass
g = Gravitational acceleration
F = 5*9.8
F = 49N
Therefore the correct answer is E.
Answer:
18375g
Explanation:
![\boxed{density = \frac{mass}{volume} }](https://tex.z-dn.net/?f=%5Cboxed%7Bdensity%20%3D%20%20%5Cfrac%7Bmass%7D%7Bvolume%7D%20%7D)
![∴ mass = density \times volume](https://tex.z-dn.net/?f=%E2%88%B4%20mass%20%3D%20density%20%5Ctimes%20volume)
Let's find the volume of the rectangular block.
Volume
= length ×breadth ×height
= 3.5 ×6 ×2.5
= 52.5cm³
Mass of the block
= 350(52.5)
= 18375g
Answer:
<h2>8.78 Amps</h2>
Explanation:
Given data:
power rating of the heater P= 1010 W
voltage of the heater V= 115 volts
current taken by the heater I= ?
We can apply the power formula to solve for the current in the heater
i.e P= IV
Making I the current subject of formula we have
I= P/V
Substituting our given data into the expression for I we have
I=1010/115= 8.78 A
<h2 /><h2><em>Hence the current when the unit/heater is operating is 8.78 Amp</em></h2>
Answer:
Every object located in the universe emits radiation.
Explanation:
This is the fact which represents evidence of The Big Bang Theory.