1. Trial and error is discouraged in science because it wastes time.

True

False

2. Conduction is the movement of energy from one substance to another by direct contact.

True

False

What do you think would happen if the voltage were swept very quickly?

A car slows down from 23 m/s to rest in a distance of 85m. what was its acceleration, assumed constant?

You notice the flagpole at school vibrating in the breeze. You count the vibrations and find that the flagpole makes 20 complete vibrations in 10 seconds.

The amount of work done at a grocery store stocker uses 120 N of force to lift a sack of flour 1.5 m onto a shelf

How can we determine the strength of a sonic boom?

The conservation of energy covers all types of energy. This lesson has only provided a handful of examples of it. To be more convinced that it works in another context, devise an experiment to evaluate the conservation of energy.

Which technology category would NOT likely be the subject of a standard published by the International Electrotechnical Commission (IEC) ? A. Semiconductors B. Solar energy C. Encryption D. Consumer appliances

In the kitchen of your house you would like to run a 240 W blender, a 30 W phone charger, a 720 W toaster oven, and two 120 W lights. Assuming your house is wired for 120 Volts, how much current will be pulled by these electrical devices?

The specific heat of solid Substance A is 0.1 kJ/kg K. The specific heat of solid Substance B is 1.0 kJ/kg K. Which substance will require a higher number of joules to heat from 10°C to 20°C?

What is the difference between unicellular and multicellular organisms?