Answer:
Output force is 4.8 N
Explanation:
A pulley is a simple machine made of a grooved wheel with a rope or cable wrapped around it. Pulleys are used in the transmission of energy or motion.
The input force is also known as the applied force while the output force is the force exerted on an object by a simple machine.
The mechanical advantage of a pulley is the ratio of the output force to the input force.
Mechanical advantage = output force / input force
Substituting:
0.48 = output force / 10
Output force = 4.8 N
B. Decreasing the surface area of solid reactant;
Why? Collision theory suggests that the more opportunities for reactants to come into contact or "collide" with other reactants, the faster the reaction will take place. Hence, decreasing the surface area will decrease the probability of collisions between reactants thereby decreasing reaction rate.
C hope that helps have a good one let me know if you need extra help
1-no predators,so uncontrolled population growth
2-is a predator that is stronger than the apex predator of the area,or is in a predator free environment so has little to no problem spreading
3-is a toxic animal that breeds quickly,so when eaten can kill what ate it,there for ruining the ecosystem as the predators die from the toxic prey they eat.which can lead to method 1 if not dealt with.
