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Downstream Speed = (10 + 4) km/hr = 14 km/hr Time taken = 70/14 = 5 hours
In order to investigate the internal atomic structure of crystals, we make use of:
Which of the following particles in motion, having the same kinetic energy, has the shortest wavelength?
A projectile is launched at an angle of 30° with the horizontal and remains in the air for 5 seconds. What is the range of the projectile? (Take g = 10...
What does the slope of a velocity-time graph represent?
What is the SI unit of pressure?
Which of the following waves require a medium to travel?
Two tuning forks produce 4 beats per second. If one has a frequency of 256 Hz, the frequency of the other is:
Why does a fountain pen leak on an airplane flying at high altitude?
The stopping potential for photoelectrons emitted from a metal surface when light of frequency 8×1014 Hz is incident is 3 V. What is the wo...
If the temperature of a place increases suddenly, the relative humidity –
