IGCSE

• A

• B

• C

• D

• pole 1 and pole 2.

• pole 2 and pole 3.

• pole 3 and pole 4.

• pole 4 and pole 5.

Tags

NGSS.HS-PS2-1

A small steel ball is dropped from a low balcony. Ignoring air resistance, which statement describes its motion?

• It falls with decreasing acceleration.

• It falls with constant acceleration.

• It falls with decreasing speed.

• It falls with constant speed.

• A

• B

• C

• D

What is the efficiency of a solar cell if 1000 J of solar energy hits the cell and 200 J are converted into electrical energy?

• 10%

• 20%

• 30%

• 40%

Tags

NGSS.HS-PS3-3

What is electrical energy converted into when a drill is used?

• Kinetic energy

• Sound

• Heat

• All of the above

Tags

NGSS.HS-PS3-3

• A

• B

• C

• D

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Electricity can be obtained from different energy resources. Which energy resource is used to obtain electricity without producing heat to boil water?

• coal

• geothermal

• hydroelectric

• nuclear

What is designed to change electrical energy into kinetic energy?

• A. capacitor

• B. generator

• C. motor

• D. transformer

Tags

NGSS.HS-PS3-3

Which of the following statements describes the period of a wave?

• Number of waves per second

• Distance from crest to crest

• Distance from resting position to top of the wave

• Time taken to produce one wave