KE=1/2 m v^2
KE= .5 x 2kg x 15m/s to the 2nd power
KE=225 km/s
The resistance expected of the heater is 50.1 ohms.
<h3>What is resistance?</h3>
Resistance can be defined as the opposition to the flow of electric current in an electric circuit. The S.I unit of resistance is Ohms (Ω).
To calculate the resistance of the heater, we use the formula below.
<h3>Formula:</h3>
- R = V²/P............. Equation 1
Where:
- R = Resistance of the heater
- P = Power of the heater
- V = Voltage supplied to the heater
From the question,
Given:
- V = 480 V
- P = 4.6 kW = 4600 W
Substitute these values into equation 1
- R = (480²)/4600
- R = 50.1 ohms.
Hence, the resistance expected of the heater is 50.1 ohms.
Learn more about resistance here: brainly.com/question/17563681
Explanation:
The object stops moving in 5 places (namely B, D, F, H, and position after 28 seconds which isn't marked ).
We know that the object has stopped moving, since its position does not change with the passage of time i.e. at rest.
Answer:
the angular displacement Δθ of the tub during a spin of 92.1s is 3122.19 rad or 496.91 rev
Explanation:
Given;
Angular velocity v = 33.9 rad/s
Time t = 92.1 s
Angular displacement d = angular velocity × time
d = vt
Substituting the given values;
d = 33.9 × 92.1 rad
d = 3122.19 rad
To revolutions;
revolution = radian/2π
d = 3122.19/2π rev
d = 496.91 rev
the angular displacement Δθ of the tub during a spin of 92.1s is 3122.19 rad or 496.91 rev