NEW
Font size
WorksheetsEnergy Concept
Total questions: 10
Worksheet time: 10mins
Calculate kinetic energy of an elephant of mass 2000 kg travelling at 5 m/s.
15 kJ
20 kJ
25 kJ
30 kJ
Kinetic energy will be double if the _______ is double.
mass
velocity
distance
acceleration
What is the potential energy of a 12 kg mass raised to a height of 25 m?
1 kJ
2 kJ
3 kJ
5 kJ
Jack put on his bag-pack of weight 100N. He then started to climb up a ladder up a height of 20 m. How much work was done?
0.5 kJ
1 kJ
1.5 kJ
2 kJ
When doing a chin-up, a physics student lifts her 42.0-kg body a distance of 0.25 meters in 2 seconds. What is the power delivered by the student's biceps?
40 Watts
45 Watts
52.5 Watts
55 Watts
The following regarding law of conservation of energy EXCEPT
Energy cannot be destroyed
Energy can be created
Energy can be transform into one form into another
Total amount of energy in the process is constant
The SI unit of temperature is
Kelvin
Celcius
Farenheit
Electromagnetic waves transfer heat by means of
conduction
convection
radiation
Conduction is the main heat transfer in
solid
gases
liquid
vacuum
The following are the main ways to prevent overheating of the ball bearing in rotating anode EXCEPT
small cross sectional area
stem made from poor conductivity
stem made as short as possible
blackened the anode rotor
