Question
Which of the following rocky planets is the fastest
planet in our solar system – traveling through space at about 29 miles (47 kilometres) per second?Solution
Mercury is the fastest rocky planet in the solar system, orbiting the Sun at about 29 miles (47 km) per second. Due to its proximity to the Sun, it completes its revolution in just 88 Earth days.Â
In streamline flow through a horizontal pipe, at one point the cross-sectional area is 4 cm² and velocity is 8 m/s. If at another point the cross-secti...
In the equation of motion ( v = u + at ), ( u) represents:
The surface tension of water on adding detergent to it –
A porter lifts luggage of 20 kg from the ground and puts it on his head 2 m above the ground. Calculate the work done by him on the luggage (take g = 10...
What type of rays are used in a CT scan to visualize the internal structures of the human body?
For CE-transistor amplifier, the audio signal voltage across the collected resistance of 3 k Ω is 3V. Assume the current amplification factor of the t...
‘Lubb-dupp’ sound is produced due to the action of
Newton's rings can be obtained in:
Which of the following is a reason for excessive current in electrical circuits?
I. Direct touching of wires
II. Connection of many d...
A sugar solution in a tube of length 2.0 dm produces optical rotation of 12°. Then, the sugar solution is diluted to one half of its initial concentra...
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