(5 bulbs) x (25 watt/bulb) x (6 hour/day) x (30 day/month) =
(5 x 25 x 6 x 30) watt-hour/month =
22,500 watt-hour/month .
The most common unit of electrical energy used for billing purposes
is the 'kilowatt-hour' = 1,000 watt-hours .
22,500 watt-hour/month = <em>22.5 kWh/month</em>.
(22.5 kWh/month) x (1.50 Rs/kWh) = <em>33.75 Rs / month
</em>
It will possibly be A) chemical b/c it can make a sound like when the bar hits the ball it makes a sound correct?! and also it created heat especially when it hits the ball. and when the ball MOVES and the bar HITS it creates kinetic energy, but when you hit the ball it doesn’t create a new substance.
Answer with Explanation:
We are given that
Egood=12 V
Rbatt,good=0.02ohm
Edead=10.8 V
Rbatt,dead=0.3 ohm
We have to find the current through the batteries connected in series and parallel.
When batteries are connected in series
V=Egood+Edead=12+10.8=22.8 V
R=Rbatt,good+Rbatt,dead=0.02+0.3=0.32 ohm
Current,I=![\frac{V}{R}](https://tex.z-dn.net/?f=%5Cfrac%7BV%7D%7BR%7D)
Using the formula
![I=\frac{22.8}{0.32}=71.25 A](https://tex.z-dn.net/?f=I%3D%5Cfrac%7B22.8%7D%7B0.32%7D%3D71.25%20A)
When the batteries are connected in parallel
V=Egood-Edead=12-10.8=1.2 V
R=0.02+0.3=0.32 ohm
![I=\frac{1.2}{0.32}=3.75 A](https://tex.z-dn.net/?f=I%3D%5Cfrac%7B1.2%7D%7B0.32%7D%3D3.75%20A)
Answer:
Time taken by the coin to reach the ground is 1.69 s
Given:
Initial speed, v = 11.8 m/s
Height of the building, h = 34.0 m
Solution:
Now, from the third eqn of motion:
![v'^{2} = v^{2} + 2gh](https://tex.z-dn.net/?f=v%27%5E%7B2%7D%20%3D%20v%5E%7B2%7D%20%2B%202gh)
![v'^{2} = 11.8^{2} + 2\times 9.8\times 34.0 = 805.64](https://tex.z-dn.net/?f=v%27%5E%7B2%7D%20%3D%2011.8%5E%7B2%7D%20%2B%202%5Ctimes%209.8%5Ctimes%2034.0%20%3D%20805.64)
![v' = \sqrt{805.64} = 28.38 m/s](https://tex.z-dn.net/?f=v%27%20%3D%20%5Csqrt%7B805.64%7D%20%3D%2028.38%20m%2Fs)
Now, time taken by the coin to reach the ground is given by eqn (1):
v' = v + gt
![t = \frac{v' - v}{g} = \frac{28.38 - 11.8}{9.8} = 1.69 s](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7Bv%27%20-%20v%7D%7Bg%7D%20%3D%20%5Cfrac%7B28.38%20-%2011.8%7D%7B9.8%7D%20%3D%201.69%20s)
A three-year fixed rate lease = $750/month
The new rent in one month = (1+(4/100)) x 750 $/month
= 780 $/month
The rent in one year = 12 x 780 $/month = 9360 $/year
The rent in three years = 9360 $/year x 3 year = $ 28,080