Defination coulomb's law.
1 answer:
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Answer:
b) the current and the voltage across the resistor
Explanation:
As soon as we close the switch then the current in the circuit will be zero because the inductor connected in series will not allow to change the current through it due to its inertial property
Since initial current through the inductor is zero so after connecting the key the current will still remains zero and then it will start increasing
The equation for current is given as
so as soon as the key is closed the current in the circuit is zero and hence the voltage across the resistor is also zero as we know
so correct answer will be
b) the current and the voltage across the resistor
Answer:
0.119 s is the correct answer to this question.
Explanation:
As mentioned in the question
U=3.89\ m/s
a=-1.44\ m/s^2
S=4.8\ m
Consider the final speed of the softball covering the distance of 4.8m is v
Now using the equation
Putting the value of U, A, S in the previous equation we get
Now again using the equation
v=U+at
where U=intial velocity, t= time
Substituting the value of v, U, a
Hence the slide time is 0.119 s