Answer:
I = 0.2 A
Explanation:
The current flowing across each resistor in a series arrangement is the same throughout the circuit. So in order to calculate the current, we must first find the equivalent resistance of all three resistors. The equivalent resistance of the resistors connected in series is given as:
Now we use Ohm's law for the current:
<u>I = 0.2 A</u>
Answer:A generator is the appropriate device to be used.
Explanation:
A generator is a device which transforms mechanical energy to electrical energy.
The different parts of a generator includes:
- Engine, alternator, fuel system, voltage regulator, lubricating system, cooling and exhaust system, Battery charger and control panel.
The generator works on the principle of electromagnetic induction which states that
that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field. This movement creates a voltage difference between the two ends of the wire or electrical conductor, which in turn causes the electric charges to flow, thus generating electric current.
Therefore, the use of a generator is the best device for the campers to provide electrical power source for their heaters and light in the cabin.
Answer:
a) 17.97 m/s
b) 16.5 m
Explanation:
The total distance that she runs is twice the distance between her and the table, which is 5.5 * 2 = 11m
So the time she would need to run that distance at a rate of 3m/s is
t = 11/3 = 3.67s
This is also the time it takes for the ball to be thrown up and down, which is twice the time it needs to reach the top, its maximum height at v = 0 m/s
So the time for the ball to reach maximum height is 3.67 / 2 = 1.83 s
Let g = 9.8m/s2. For the ball to get to 0 within 1.83s at the deceleration of 9.8m/s. Its initial speed must be
v = gt = 9.8*1.83 = 17.97 m/s
As she reaches the table within half of the total time (3.67 /2 = 1.83s), the position of the ball would be
Answer:
Pnitrogen=3.18 kPa, Poxygen=1.62 kPa , Ptotal= 4.80 kPa
Explanation:
partial pressure equation becomes Ptotal = Pnitrogen + Poxygen
Partial pressure of Nitrogen
Pnitrogen= nRT/V
n=no of moles =mass/molar mass
mass of nitrogen=0.6kg
Molar mass of nitrogen gas=28gmol^-1
n=0.6/28=0.0214moles
R=0.2968 kPa·m3/kg·K
T=300k
V=0.6m^3
Pnitrogen=(0.0214 * 0.2968 * 300)/0.6
Pnitrogen=3.18 kPa
Likewise
Poxygen=nRT/V
n=0.4/32=0.0125moles
R=0.2598 kPa·m3/kg·K
T=300k
V=0.6m^3
Poxygen=(0.0125 * 0.2598 * 300)/0.6
Poxygen=1.62 kPa
Ptotal= 3.18+1.62= 4.80 kPa
Creatine phosphate can supply the energy needs of a working muscle at a very high rate, but only for about 8–10 seconds.