Answer:
Yes, Mirror are a surface that reflects light more perfectly than ordinary objects.
Explanation:
initial angular speed is given by 33.3 rpm
final angular speed is given by 78 rpm
now by using kinematics we will have
The calorie was originally defined as the amount of heat required at a pressure of 1 standard atmosphere to raise the temperature of 1 gram of water 1° Celsius. ... Since 1925 this calorie has been defined in terms of the joule, the definition since 1948 being that one calorie is equal to approximately 4.2 joules.
Answer:
Gastric juice is an acidic substance ( Strongly acidic)
Explanation:
According to the table shown in the question:
- Gastric juice turns blue litmus paper to red
- It is neutral to red litmus
Note: Any substance that turns blue litmus paper red and is neutral to red litmus paper is an acidic substance.
Moreover, gastric juice is a combination of Pepsin and HCl and it has a PH that varies between 1 and 3. This PH is typical of a strongly acidic substance.
Answer: B) They all orbit the sun
Explanation:
