During a lab activity, students prepared two solutions separately at the same temperature. later they mixed the solutions and the temperature dropped. why?

In "the pig," what is the main effect that the piglet initially has on kibuka?

What type of graph presents information about how often certain or traits occur?

1. you serve a volleyball with a mass of 2.1 kg. the ball leaves your hand with a speed of 30 m/s. the ball has energy. calculate it. 2. a baby carriage is sitting at the top of a hill that is 21 m high. the carriage with the baby weighs 12 n. the carriage has energy. calculate it. 3. a car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. the car has . calculate it.