Propose a situation where friction is undesirable.

When jumping, a flea reaches a takeoff speed of 1.0 m/s over a distance of 0.47 mm. What is the flea's acceleration during the jump phase?

If A, B, and C are three activities connected with SS and FF (combination) relationships with 2-day lag on SS relationship only. Their durations are 5, 10, and 3 respectively. What is the duration of the project? a. 5 days. b. 10 days. c. 3 days.

Suppose that two pith balls, each with a charge of 1 Coulomb, are hanging in the lab room, seperated by a distance of 1 meter, and applying a force on eachother. What will be the magnitude of the electrostatic force between them?

Describe Thomson's concept of the atom?

Which describes Einstein's idea of space and time? Time and space are relative. Time and space are absolute. Time is relative and space is absolute. Time is absolute and space is relative.

Steam moves into a cylinder of a steam engine at a constant pressure and does 2.34 J of work on a piston. The diameter of the piston is 3.4 cm and the piston travels 4.6cm. What is the pressure of the steam?

Identify each type of simple machine.

A car's speedometer reads 20 m/s after accelerating, from a standing start, for 25s. What was the magnitude of its acceleration?

What happens to the period of a pendulum and the period of a spring as the amplitude of the oscillation increases? Briefly give an explanation for this relationship.

The element that is most abundant in earth is