A scalar quantity is described by both a magnitude and a direction
Indicate whether the statement is true or false
FALSE
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An incompressible fluid is flowing through a horizontal pipe with a constriction. The velocity of the fluid in the wide section of the pipe is 4.00 m/s and the velocity of the fluid in the narrow section of pipe is 9.00 m/s. The pressure of the fluid in the wide section is 250 kPa. What is the pressure in the narrow section of the pipe? (density of the fluid is 1000 
A. 218 kPa B. 225 kPa C. 237 kPa D. 246 kPa E. 252 kPa
The activity of a sample reduces from 7.55 × 109 Bq to 5.11 × 109 Bq in 5.50 months
(a) What is the half life? (b) How many months must one wait for the activity to decrease to 10%?
A certain gas is compressed adiabatically. The amount of work done on the gas is 800 J. What is the change in the internal energy of the gas?
A) 800 J B) -800 J C) 400 J D) 0 J E) More information is needed to answer this question.
A current can be made to flow in a wire if
a. it is connected to a battery. b. it is put into motion near a magnet. c. a magnet is put into motion near it. d. all of the above.