Question
Select the option that expresses the given sentence in
active voice. By how many people were you helped in your time of difficulty?ÂSolution
In the active voice, "how many people" becomes the subject performing the action. The verb "helped" is in the past tense.
Which of the following is a physical change?
Trans fats are considered unhealthy because they:
A car covers a distance of 200 km in 4 hours. What is its average speed ?
Calculate the work done when a force of 10 N moves an object 5 m at 60° angle to direction of force.
The rate of change of which of the following determines angular velocity?
A body is thrown vertically upward. At the highest point of its motion, which of the following is true?
Which of the following is correct regarding frequency?
I. Frequency is expressed in hertz
II. A frequency of 1 Hz is one oscillation per minute
A spherical conductor of radius R is surrounded by a concentric spherical shell of radius 2R. The capacitance of this system is:
Which of the following is a primary pollutant?