We can classify both the shovel and the garden trowel as compound machines. this is because each garden tool contains two simple machines,
a) a lever and a wedge.
b) a blade and a handle.
c) a lever and a pulley.
d) an inclined plane and a wedge.

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem