Two small nonconducting spheres have a total charge of 94.0 μC . Part A When placed 31 cm apart, the force each exerts on the other is 11.5 N and is repulsive. What is the charge on each?

Q1,Q2=

Part B

What if the force were attractive?

Q1,Q2=

If gases like carbon dioxide and methane make up less than 1% of the total atmosphere, why is it important for scientists to monitor changes in percentages of these gases?

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)