Which of these is NOT a vector quantity?

a. mass

b. force

c. acceleration due to gravity

What is the direction of the resulting vector if a vector of 2 units North is added to a vector of 2 units South. a. South c. SE b. North d. The two vectors cancel each other out.

What is the half life of each of these radioactive isotopes? a radioactive isotope decreased to one-fourth its original amount in 18 months.

What is the density of the crusts?

The blending of a wave as it passes at an angle from one medium to another

Why does the temperature not change during boiling water?

The force of attraction that holds two atoms together within a molecule is

An incident ray traveling in a slower medium strikes a boundary with a faster medium. What happens when its angle of incidence is greater than the critical angle?

Question 1 [7] Hydrogen gas is used in a Carnot cycle having an efficiency of 60% with a low temperature of 300K. During the heat rejection the pressure changes from 90 kPa to 120 kPa.

Technician A says a pull to the right during braking could be caused by a defective metering valve. Technician B says a pull to the left could be caused by a defective proportioning valve. Which technician is correct

Can Radiation transfers energy by moving matter.