Question

The lower pairs are pairs​

Answer 1

Explanation:

Energy is the ability to do work. The energy can be measured using multiple units. Calorie and Joule are the units of energy. The relation between calorie and joule is proportionate. This implies any change in Calorie will change its equivalent value in Joules.

Calorie And Joule

The relation between Calorie and Joule can be numerically written as-

1 calorie = 4.2 joules1 Calorie/kcal = 4.2 kilojoules.

Where,

a calorie is the unit of energy.

Calorie or kilocalorie is the unit of energy = 1000 calories.

Joule is the unit of energy

Kilojoule is the unit of energy, = 1000 joules.

Please note that calories and calories are not the same. 1 Calorie = 1000 calories. Sometimes Calorie is often called as kilocalorie. Calorie and calorie both are the units of energy.

Relationship Between Calorie And Joule

The relationship between calorie and joule are proportionate. Which implies, the calorie is directly proportional to the joule. That means-

When the value in terms of calorie increases, its corresponding value in joules also increases at a rate of 4.2.

When the value in terms of calorie decreases, its corresponding value in joules also decreases at a rate of 4.2.

Refer to the table given below for definition, unit, and symbol of calorie and joule in physics and life science.

Answer 2

Answer:

have a surface contact and a relative motion

takes place

Explanation:

when the two elements

of a pair have a surface contact and a relative motion

takes place, the surface of one element slides over the surface

of the other, the pair formed is known as lower pair.