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Answer:
A·B = 4
Explanation:
Given that,
Vector A = 2i+3j-3k
Vector B = -i+5j+3k
We need to find the value of A·B.
We know that,
i·i=j·j=k·k = 1 and i·j=j·k=k·i=0
So,
So, the value of A·B is equal to 4.
A high-voltage spark is delivered to the plugs via the primary winding. The principal magnetic field of the coil increases. Zero volts are reached by the secondary voltage.
The fundamental ideas are inductance and electromagnetism. Two sets of wire windings, or coils—get it—that make up an ignition coil can be found inside. An iron core is encircled by the two windings, referred to as a primary set and a secondary set. A magnetic field is created when the battery current enters the primary windings. The magnetic field collapses over the secondary windings when a switch—the distributor points opening or an electronic trigger—interrupts the flow of battery current.
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The average acceleration of the car as it accelerates from 15 m/s to 25 m/s will be 2.5 m/s².
<h3>What is Average acceleration?</h3>
Average acceleration is the average rate of change of velocity with respect to time. Mathematically -
a = Δv/Δt
Given that a car is traveling at 15 m/s in north direction and in 4 seconds it accelerates to 25 m/s in the north direction only. Therefore, we can write -
initial velocity [u] = 15 m/s
final velocity [v] = 25 m/s
time taken [Δt] = 4 s
The magnitude of the average acceleration can be calculated as follows-
a = Δv/Δt
Δv = v - u = 25 - 15
Δv = 10 m/s
Therefore -
a = 10/4
a = 2.5 m/s².
Therefore, the average acceleration of the car will be 2.5 m/s².
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