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The amount of heat which is absorbed during the change of state of a substance without rise in its temperature is called its
When the pitch of a note is raised then, its
In fluid mechanics, this shows that the pressure of a fluid decreases as the speed of the fluid increases. In addition, the pressure of a fluid decreases as the elevation increases
The surface of the thermos flask is silvered for minimizing heat transfer by what process
It states that, "If a stress is placed on a system on equilibrium whereby the equilibrium is altered, that change will take place which tends to relieve or neutralize the effect of the added stress".
Who determined the quantitative relationship between the amount of electricity used in electrolysis and the amount of chemical reaction that occurs?
What is the power of an elevator which can lift a 100 kg mass a distance of 20 m in 5 seconds?
In electrodynamics, what term refers to the average speed of the charge carriers?
In optics, this effect refers to the blurring of the image produced on a concave mirror due to the convergence of rays far from the mirror to other points on the principal axis. What do you call this effect?
Which of the following thermometers is best suited for measuring a temperature of nearly 1500oC?
Which one of the following propagates with the same speed as speed of light?
Suppose you want to store 1.00 J of electric potential energy in a volume of 1.00 m3 in vacuum. What is the magnitude of the required electric field?
A mass of 8 kg is above a given datum, where local g is 9.70 m/s^2. Calculate the gravitational force with respect to the datum?
The position x of an experimental rocket moving along a long rail is measured to be x(t) = (4m/s)t + (7m/s2)t2 + (5m/s3)t3 – (0.35m/s4)t4 over the first 10s of its motion, where t is in seconds and x is in meters. Find the velocity of the rocket for the first 10 seconds
What is the work done in a piston-cylinder system that contains 0.5 cu meter of air initially at 150 kPA and 50 degrees Celsius if the temperature remains constant while the volume is decreased to a quarter of the original volume?
Heat will flow from one body to another in thermal contact with it, when they differ in
A spaceship moving away from Earth with speed of 0.900c fires a robot space probe in the same direction as its motion, with speed of 0.700c relative to the spaceship. What is the probe’s velocity relative to the Earth?
