GPS Remedial UAS Grade 8

A 60 W light bulb is on for 2 hours. how much the energy does it use? (be mindful with the correct units)

• 1200 J

• 12000 J

• 72000 J

• 432000 J

• A

• B

• C

• D

determine the area which should be used to calculate the pressure the tank exerts on the table (in m²)

• 0.25

• 0.5

• 0.75

• 1.0

What type of wave are sound wave?

• longitudinal

• transverse

• electromagnetic

• sea wave

The delay time between light of thunder and sound of thunder is 2 seconds. If the speed of sound at the air is 340 m/s, how far the thunder from you?

• 680 m

• 170 m

• 342 m

• 338 m