Answer:3.67 m/s
Explanation:
mass of block(m)=2 kg
Velocity of block=6 m/s
spring constant(k)=2 KN/m
Spring compression x=15 cm
Conserving Energy
energy lost by block =Gain in potential energy in spring

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Answer:
The equation of current is 
Explanation:
Resistance, R = 12 ohm
Inductance, L = 0.06 H
E (t) = 12 cos (120 t)
Compare with the standard equation,


So, the inductive reactance is
XL = w L = 120 x 0.06 = 7.2 ohm
The impedance of the circuit is

The current leads by 90degree so the equation of current is

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Acceleration, a = (v - u)/t
where v is the final velocity, u is the initial velocity, and t is the time.
This formula on a velocity time graph represents the slope of the graph.
Answer:
<em>F=8.87 N</em>
Explanation:
<u>Coulomb's Law
</u>
The electrostatic force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between the two objects.
Written as a formula:

Where:

q1, q2 = the objects' charge in coulomb
d= The distance between the objects in meters
Object 1 has a charge of

Object 2 has a charge of

They are separated by a distance of
d = 0.099 m
Calculate the force:

F=8.87 N