A lamp marked 100w 250v is lit up for 10hours, costs 2I what is the cost of lighting the lamp

2k

Explanation:

100W X 10h = 1000Wh = 1KWh thus cost is 2k

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.