Answer:
If you run a 500 W computer for 4 hours, your electric meter will read 2kWh; this is a measure of energy "used". The correct answer is D.
Explanation: Energy is defined as the capacity of doing work and is occurs in different forms( electrical, kinetic, potential energy). Electrical energy consumption can be calculated or measure through the multiplication of the power( W or kW) used by the number of hours during which the power is consumed. Therefore the unit of energy is kWh. From the question,
500W was used for 4 H
Therefore energy consumed
500× 4= 2000Wh. To convert to kWh
Divide by 1000,
2000÷ 1000= 2.
There energy consumed in kWh is,
2kWh energy.
The direction of the deflection on the screen caused by the vertical component of the Earth's magnetic field, taken as 20.0uT down is 6.3445*10^-16
Given,
E = Accelerating voltage = 2.47×10³ V
m = Mass of electron
Distance electron travels = 33.5 cm = 0.335 cm
By using the formula,
E = mv^2 /2
v = 
v = 
v = 29455256.08671 m/s
Deflection by Earth's Gravity
Δ = g s^2/v^2 / 2
Δ = 9.81 
/ 2
Δ = 6.3445 * 10^-16 m
Therefore,
Magnitude of the direction on the screen caused by the Earth's Magnetic field is 6.3445*10-16 m
To know more about "Magnetic field"
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Answer:
David
Explanation:
Because he is not on the ride with Ben and Justine
The source of the sound it moving closer to you because the wavelength is shortened. The shorter the wavelength, the higher the frequency, the higher the pitch
<span>Hudson Bay drainage basin</span>
