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A mass of 20kg produces a momentum of 300kgm/s. What is the Kinetic energy?
- 4500 Joules.
- 2250 Joules.
- 3250 Joules.
How is this solution calculated?
Which of the following is true?
- Noise always affects the standard of work for every person.
- Noise has absolutely no measurable impact on a person's work.
- Noise does affect the standard of work with certain people.
Noise affects the standard of work proportionately with the level of the noise.
Fibre optic cables are capable of transmitting light at
- 1.99 * 108 m/s.
- 3.00 * 108 m/s.
- 0.99 * 108 m/s.
Could someone tell me where to find info about this
Kerosene will burn effectively at an air/fuel ratio of
- 150:1.
- 15:1.
- 45:1.
but the mixture provided to the combustion chamber is of ratio 45:1
As a block of ice is melted (to 4 degrees C). Its volume
- stays same.
- decreases.
- increases.
whay?