Question
A person weighing 80 kg is standing in an elevator that
is accelerating downward at 3 m/s². What is the apparent weight? (Take g = 10 m/ s²)Solution
Apparent weight: W′= m(g−a)=80(10−3)=80×7=560N
As we go from Equator to North pole the value of ‘S; the acceleration due to gravity
When heated from 0° to 10°C volume of a given mass of water will -
Which of the following optical phenomena CANNOT convert unpolarised light to plane polarised light?
Which of the following is the energy quantum of radiation?
A body explodes into three equal fragments, two of which fly off perpendicular to each other with equal speeds. What is the direction of the third frag...
Which one of the following is the equation for Velocity Time relation?
A 220 V, 50 Hz AC supply is connected across a coil of resistance 10 Ω and inductance 0.1 H. Calculate the power consumed in the coil.
For a projectile, maximum range is obtained when angle of projection is:
An electron and a proton are accelerated by the same potential difference. Which one has a longer de Broglie wavelength?
Which type of mirror is used in car headlights?
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