Answer:
The Magnetic field is 59.13 mT.
Explanation:
Given that,
Number of turns = 400
Radius = 1.0 cm
Frequency = 90 Hz
Emf = 4.2 V
We need to calculate the angular velocity
Using formula of angular velocity
We need to calculate the magnetic flux
Relation between magnetic flux and induced emf
Put the value into the formula
Hence, The Magnetic field is 59.13 mT.
The number of kilowatts used by an individual to operate his appliances is determined as 12.1 kWh.
<h3>
Average daily power consumption</h3>
The average daily power consumption is the amount of electric energy consumed by an individual on a daily rate.
The average daily power consumption of individuals in USA is 12,100 W-hr.
<h3>Converting watts to kilowatts</h3>
E = 12,100 Whr/1000
E = 12.1 kWh
Thus, the number of kilowatts used by an individual to operate his appliances is determined as 12.1 kWh.
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Answer:
The energy consumption by toaster oven is 432 kJ and that of fluorescent light (CFL) bulb is 435 kJ.
Explanation:
Power of toaster oven, P = 1.2 kW
Time, t = 6 minutes = 360 s
The energy used by toaster oven is given by :
Power of fluorescent light (CFL) bulb, P' = 11 W
Time, t' = 11 h = 39600 s
Energy used by fluorescent light (CFL) bulb is given by :
So, the energy consumption by toaster oven is 432 kJ and that of fluorescent light (CFL) bulb is 435 kJ.
Answer:
Explanation:
Given
Two springs with spring constant and
(a)If they are stretched using the same force
Force
where and are the extension in the spring
so
therefore
Work done is given by
thus
(b)If they are stretched the same distance
Thus
For same extension, work done by Force 1 is more
Answer:
= 746.58N
Explanation:
where,
"m" is the mass of the body
"v" is the linear velocity of the body
"R" is the radius of the circular path.
Mass of the pilot is m = 150 lbs = 68.0389kg
Speed of the pilot is v = 120 ft/s. = 36.576m/s
The radius of the loop is R = 400 ft = 121.92m
F = mv²/R
= (68.0389 × (36.576²)) / 121.92
= 746.58N