Can a vector have a component equal to zero and still have a nonzero magnitude?

926

Explain what is the ray of light?

986

assuming friction is negligible, if a lever has a mechanical advantage of 5, how much effort in newtons is needed to lift a 10 newton load?

931

What is the quantity?

1028

What is the value of magnetism at the center of earth?

977

I just want to convert the voltage into current i.e. suppose I have 750V & 1A AC power then I want to convert it into 12V & 62A DC power only difficulty is that I don't want to use the tranceformer. Simply to say, I want to make the step-down without using tranceformer. Please, give me some ideas. And also I want the relation between Magnetic Induction & Weight of the body can be levitated. Or I can say, how much of magnetic induction requires to lift 500gms weight? I am heartily thankful to you.

2212

Why does a tilted gyroscope not fall?

1007

Tell me what is pascal s principle?

1010

What two properties of electromagnetic waves are used to attach info to radio signals?

929

Which waves are used in sonography?

1035

what is Gauge?

1009

Which element has the lowest melting point?

1014

Explain what is the rectilinear propagation of light?

988

You want to magnetize a metal. How would you do that?

978

What is the measure of the force of gravity on an object?

1000