The position versus time for a certain object moving along the x-axis is shown. The objects initial position is -3m. Find the instantaneous velocity at 8 s. Answer is units of m/s.

What are the necessary conditions for fusion?

The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.

State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory