a lever was used to lift a heavy rock the input force was 150 n and the output force was 500 n what was the mechanical advantage of the pulley

Option A. 3.3

Explanation:

The following data were obtained from the question:

Input force = 150 N

Output force = 500 N

Mechanical advantage (MA) =.?

Mechanical advantage can be defined as force output divided by force input i.e

Mechanical advantage (MA) = force output / force input

With the above formula, we can obtain the mechanical advantage of the pulley as shown below:

Input force = 150 N

Output force = 500 N

Mechanical advantage (MA) =.?

MA = force output / force input

MA= 500/150

MA = 3.3

Thus, the mechanical advantage of the system is 3.3

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.  

stratosphere, is the answer for (apex)