Answer:
<em>Its speed will be 280 m/s</em>
Explanation:
<u>Constant Acceleration Motion</u>
It's a type of motion in which the speed of an object changes by an equal amount in every equal period of time.
If a is the constant acceleration, vo the initial speed, vf the final speed, and t the time, vf can be calculated as:
The object accelerates from rest (vo=0) at a constant acceleration of 
. The final speed at t=35 seconds is:
Its speed will be 280 m/s
Answer:
The value of the inductance is 1.364 mH.
Explanation:
Given;
amplitude current, I₀ = 200 mA = 0.2 A
amplitude voltage, V₀ = 2.4 V
frequency of the wave, f = 1400 Hz
The inductive reactance is calculated;
The inductive reactance is calculated as;
where;
L is the inductance
Therefore, the value of the inductance is 1.364 mH.
Answer:
Explanation:
The devices are connected in parallel, the same voltage will flow through them
1) I, current in the 1800 W toaster
P, power = I V
where p = 1800 W
1800 /120 = I
I drawn by the toaster = 15 A
2) I, current drawn by the 1400 W frying pan = 1400 / 120 = 11.667 A
3) I, current drawn by 75 W = 75 / 120 = 0.625 A
B) Total current drawn by the circuit = 15 A + 11.667 A + 0.625 A = 27.292 A which is greater than 15-A hence the combination will blow the fuse
Answer:
Remember that as the temperature of an object increases, the kinetic energy of the particles inside it also increases.
So, if the temperature of a wire increases, the kinetic energy of the particles inside increases. Then when the electrons try to flow through the wire, the probability of a collision is increased (then the resistance increases). Thus, if the filament goes from red-hot to white-hot (so the temperature of the wire increases) we can conclude that the resistance that the current experiences also increases.
So no, we can not expect the resistance of the light bulb to remain constant as the filament goes from red-hot to white-hot.
