investigations never involve hypotheses.

The main strength and weakness of traditional economy?

Does sound travel faster in a warm room or cold room

3. A motorbike travels 45 miles in 15 minutes, what is its speed?

True or false a fuel resource can be replaced in an reasonably short time called a nonrenewable resource.

Which of these best shows a change from potential to kinetic energy? A Water flowing over a tall cliff B A metal spring being stretched C Electricity making a bulb light up D A stone lying on top of a mountain

If 0.25 moles of potassium chloride are consumed completely, how many moles of potassium fluoride will be produced?

Circle the path function (s) which are affected by a detailed path from one state to another: (A) Temperature (B) Boundary work (C) Pressure (D) Heat (E) Volume

The rolling resistance for steel on steel is quite low; the coefficient of rolling friction is typically μr=0.002. suppose a 180,000 kg locomotive is rolling at 12 m/s on level rails.

Label 1a lies on the rim of a large crater, and 1b lies on the rim of a smaller one. Which crater must have formed first?

John and Daniel are playing tug-of-war together. John is exerting 10 N of force. Daniel is exerting 12 N of force. What is their net force?