What is the magnitude of the electrostatic force between a rubber rod with -4.0 e-5 C of charge and fur with a charge of 7.0 e-5 C if they are separated by a distance of 0.15 m? A) 1.9 e-8 N
B) 1.24 E-7 N
C) -168 N
D) -1100 N

According to the tide table below what time of day will the highest tide occur?

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers