What is the mechanical advantage of a pulley?
2 answers:
Answer:
Mechanical advantage is the ratio of the load and effort.
Mechanical advantage of a pulley is 1.
Explanation:
A pulley system will help in reducing the effort when lifting a load. If more pulleys are used, less effort force is required, making the lifting easy.
When only one pulley is used to lift a load, the mechanical advantage is 1.
If the number of pulleys used are increased, less effort can be applied, as the mechanical advantage increases.
The mechanical advantage is equal to the number of ropes passing over the pulley or pulleys to which the load is attached.
The rope along which the effort is applied is not counted.
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In the reaction between 1 molecule of bromine and 2 molecules of potassium chloride, there are six atoms in the products.
Let's consider the balanced equation for the reaction between 1 molecule of bromine and 2 molecules of potassium chloride. This is a single replacement reaction.
Br₂ + 2 KCl ⇒ 2 KBr + Cl₂
We obtain as products, 2 molecules of potassium bromide and 1 molecule of chlorine.
- 1 molecule of KBr has 2 atoms, so 2 molecules contribute with 4 atoms.
- 1 molecule of Cl₂ has 2 atoms.
- The 4 atoms from KBr and the 2 atoms from Cl₂ make a total of 6 atoms.
In the reaction between 1 molecule of bromine and 2 molecules of potassium chloride, there are six atoms in the products.
Learn more: brainly.com/question/21850455
