A fishing boat starts from rest and has a constant acceleration. In a certain time interval, its displacement doubles. In the same time interval, by what factor does its velocity increase?

When you turn on a battery-operated device, an electrical circuit is

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

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.