A block weighing 35N is resting on a steel table (us=0.40). The minimum force to start this block moving is how many newtons N?

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

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blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.