How much capacitance is needed to store 0.00100 J of energy when the charge on the capacitor is 4.86 x 10-5 C?​

Anyone who is an expert in for the record, i’m having difficulty understanding the pictures.

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

Carbon-14 is a radioactive element that undergoes beta decay. which force is responsible for allowing carbon-14 to become stable? electromagnetic gravitational weak nuclear strong nuclear