Question
What is the minimum escape velocity required for a
rocket to leave Earth's gravitational pull?Solution
Escape velocity is the speed necessary to overcome Earth's gravitational force. For Earth, it is approximately 11.2 km/s.
A constant retarding force of 20 N is applied to a body of mass 10 kg moving initially with a speed of 12 m sβ1. How long does the body tak...
Which of the following terms does not represent electrical power in a circuit ?
___________ is an important mineral nutrient
The joint where the neck joins the head is known as which of the following?
In a nuclear reactor, one of the following is used as a fuel.
When a detergent is added to pure water, its surface tension β
Kilowatt-hour is the unit of :
The absolute zero is a temperature at which -
What is the principle behind the operation of a washing machine?