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
Intensity of gravitational field of earth is maximum at –
Which of the following metals can displace hydrogen from dilute acids?
Which among the following is necessarily present in an alloy for it to be referred as ‘Amalgam’?
Which of the following elements was the last element of the Mendeleev's periodic table?
The sky appears blue, because
Which of the following is not a vector-borne disease?
The escape velocity from a planet is 11.2 km/s. What is the minimum kinetic energy per kg needed to escape?
1. 6.3 x 107 J/ Kg
<...Sour Taste of Coca-Cola is due to the presence of which of the following acid?
A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be -
Which exercise is positioned to be India's largest multinational air operation?
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