GPS Remedial UAS Grade 11

• 3.9 m/s

• 7.8 m/s

• 390 m/s

• 780 m/s

the speed of sound is 330 m/s. what is the frequency of the wave?

• 1650 Hz

• 830 Hz

• 550 Hz

• 413 Hz

in the night a lamp with a rated current of 10 A is turned on from 6 pm to 6 am. calculate the total charge that flows through the lamp

• 220 kC

• 363 kC

• 432 kC

• 512 kC

An electric heater is connected to a 230 V power supply and has the output of 1 kW. Calculate the resistance of the heater (in ohms)

• 53

• 22.7

• 68

• 73

• I1 = I2 + I3

• I2 = I1 + I3

• I3 = I4 + I5

• I4 = I5 + I3