Why does a heavy stone nor break a glass place when place slowly on it, while a small stone falling from a great height easily breaks it ?
3 7137Why it is more difficult to stop a cricket ball than a tennis ball moving with same velocity ?
8 19781If a body is hung from a spring balance first at the poles and then at the Equator, why do the readings of the balance change ?
3 5034When a toy balloon is filled with air and then the air is allowed to go out, why dies the balloon whiz away ?
1 4159
What do you mean by loam soil?
What is astrophysics?
In universe there exist temperature of 1000000 degree Centigrade, does there also exist the temperature of -1000000 degree centigrade ?? (in order to satisfy newton's second law)
Give one advantage of a scanning electron microscope over a transmission electron microscope?
Why is it that sound waves are not normally considered as having particle-like properties, nor raindrops as having wave-like properties? : quantum physics
who described the theory of ionization?
Name the three major types of rocks?
When the sound intensity is above 120 decibel, what happen to human ears?
What makes mountains appear purple?
What is the cause of brownian motion?
What is sedimentary rock?
What scales are used for intensity?
Explain the difference between photodiode & photocell?
Explain how many seismograph stations are needed to allocate the epicenter of an earthquake?
1.when a diode has its maximum resistance? 2.is ohm's applicable for an ac circuit?