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Sample of ethane gas (molar mass & 30.1 g/mol) occupies 1.2 x 10 -2 m3 at 46°C and 2.4 x 105 Pa. How many moles of ethane are present in the sample? What is the mass of the
why the light vibrating in the plane ofincidence is not reflected at Brewster''s angle?
A skydiver falls d1 = 495 meters in t1 = 22 s before opening his parachute. After the chute opens, he falls an additional d2 = 470 meters in t2 = 56.5 s. (a) Write an expression t
In a Newton's ring set up, the gap between the glass plate and the lens is filled with a transparent liquid. If the liquid is replaced by a second liquid, the rings shrink. Which o
A car of mass 800 kg is pulling a trailer of mass 300 kg up the slope of angle ? to the horizontal where sine ? = 1/200. Resistance to motion (apart from gravity) is 1.5 N per kg o
How is plastic clad silica fibre used in optical fibres? Plastic clad silica fibre: Plastic clad silica fibre (PCS) is other type of optical cable. This has an attenuation l
Introduction : A country gets specialisation in a specific commodity due to diversification of economic resources. This stimulates a country to go for international trade. Inte
Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wavefronts in front of the source comp
Does sunlight reflected off a mirror enhance the temperature of the sun-rays? A standard planar mirror will not enhance the energy contained in the rays that reflect off it. In
Which of the following material has the highest melting point (A) Copper. (B) Aluminium. (C) Tungsten. (D) Gold. Ans: Tungsten has the highest melting point.
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