Explain what is photometry?
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What is ion pair energy?
Describe the Periscope?
What is Variable Velocity ?
Which properties of waves are independent of each other?
Mercury thermometer is constructed as shown in Figure The capillary tube has a diameter of 0.004 cm, and the bulb has a diameter of 0.250 cm. neglecting the expansion of the glass, find the change in height of the mercury column that occurs with a temperature change of 30.0 °C.
Explain the Translucent ?
Why does sun appear flat during sunrise and sunset?
Explain planck’s hypothesis? : quantum physics
Swimmers are provided with an inflated rubber jacket . why?
Why is a jet of water curved on coming out of a horizontal nozzle ?
What is astrophysics?
Explain which way do twin screw props on a boat rotate when propelling the boat forward?