Physics
When a ball is thrown vertically upwards, which of the following quantities remains constant during its motion?

Displacement
Acceleration
Energy
Velocity

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Physics
An integrated circuit is more advantages than a coventional circuit because

They make the electric equipments more reliable and easier for servicing
All listed here
If a part of the integrated circuit fails the entire circuit is simply replaced
A faulty part of a conventional circuit may be difficult to locate and repair

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Physics
A transformer

Is used to decrease or increase AC voltage
Converts DC to AC
Converts electrical energy into mechanical energy
Converts AC voltage to D.C. voltage

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