22. the mechanical efficiency of any machine is always than 100 percent.

23. when a pole vaulter flexes the pole, the pole vaulter increases the pole’s potential energy.

24. wind turbines convert energy into electrical energy.

Which of the following is an example of units for speed

Anybody wanna ? (picture included? )

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer