If the car went 30 km west in 25 min. and then 40 km east in 35 min., what would be its total displacement?

T or F science is a continually evolving discipline

Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. To complete the chart below: Go back to the lesson on the historical models.

Why is pollination done during the day

According to the second law of thermodynamics, which is a requirement for thermal energy to flow from colder objects to hotter objects? Thermal expansion must occur in the system. Convection must occur within the system.

An athlete in a gym applies a constant force of 50 N to the pedals of a bicycle to keep the rotation rate of the wheel at 10 rev/s. The length of the pedal arms is 30 cm. What is the power delivered to the bicycle by the athlete?

What formula allows you to calculate force?

My science fair project is: Texting Versus Talking - Effects of Cell Phones on Reaction time. What should I research?

The shape of earth's land masses and the of tilt its axis could have triggered climate changes in the past. True False

When you look at a single slit diffraction pattern produced on a screen by light of a single wavelength, you see a bright central maximum and a number of maxima on either side, their intensity decreasing with distance from the central maximum.

Two particles with the same charge will repel each other. True or false