If a lever system has an output force (load) of 20 kg and an input force (Effort) of 100 kg, the mechanical advantage of this lever is:
A. 2000

B. 0.2

C. 0.5

D. 5

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.