Answer: Lemon juice , vinegar
Explanation:
Lemon juice and vinegar are some acids which are found in everyday materials. In lemon juice, citric acid is present where as vinegar is a 10% solution of acetic acid in water.
Baking soda, dish detergent ,and soap are example of some alkaline material which we use in our day today daily routine.
Answer: 4 : 3
Explanation:Please see attachment for explanation
"20 J" is the "Potential Energy" of "vase" on the table.
<u>Explanation</u>:
The body possess some energy according to the position of the object that is the when an object is placed at a height it stores some energy it is called "Potential Energy".
Formula used to calculate the "Potential Energy" is
Where, "m" is mass of vase is given that 2 kg, "g" is acceleration due to gravity is and "h" is height of the object where it placed is 1 m.
Substitute the given values in the formula,
Potential energy of the vase =
Potential energy of the vase = 20 J