Question A car accelerates from rest at a constant rate alpha (α) for some time after which it decelerates at a constant rate β to… Read More »a car accelerates from rest at a constant rate alpha

Question A bus accelerates from the rest for time t1 at a constant rate α then retards at a constant rate β for time t2… Read More »a bus accelerates from rest for time t1

Question A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 18.0 m/s. The… Read More »A student stands at the edge of a cliff and throws a stone horizontally

Question A student stands 20 m away from the foot of a tree and observes that the angle of elevation of the top of the… Read More »A student stands 20 m away from the foot

Question In fusion of hydrogen isotopes into helium the decrease in mass is about 0.65%. Calculate the energy obtainable when 1.0 gram of hydrogen is… Read More »In fusion of hydrogen isotopes into helium the decrease in mass is about 0.65%

Question In a thermonuclear reaction the total initial mass is 5.02 x 10-27 kg and the total final mass is 5.01 x 10-27 kg. What… Read More »In a thermonuclear reaction the total initial mass is 5.02 x 10^-27 kg

Question In a nuclear reaction the mass defect is 2.0 x 10-6 g. Calculate the energy released, given that the velocity of light is 3.0… Read More »In a nuclear reaction the mass defect is 2.0 x 10^-6g. calculate the energy released

Question calculate the wavelength of an electron of mass 9.1×10-31 kg moving with a velocity of 2.0×106 m/s. Plancks constant, h = 6.63 x 10-34Js.… Read More »calculate the wavelength of an electron of mass 9.1×10^-31 kg moving with a velocity of 2.0×10^6m/s

Question A waterfall is 420 m high, calculate the difference in temperature of the water between the top and bottom of the waterfall assuming no… Read More »A waterfall is 420 m high calculate the difference in temperature of the water between the top and bottom of the waterfall

Question How does air resistance affect the acceleration of a falling parachute? Read: Find the acceleration when the velocity is 0. Answer Air resistance, or… Read More »How does air resistance affect the acceleration of a falling parachute?

Question find the acceleration when the velocity is 0. Read: calculate the molarity of the solution. (assume a density of 1.05 g/ml for the solution.)… Read More »Find the acceleration when the velocity is 0.

Question An aqueous KNO3 solution is made using 77.8 g of KNO3 diluted to a total solution volume of 2.04 L. Calculate the molarity of the solution. (assume… Read More »calculate the molarity of the solution. (assume a density of 1.05 g/ml for the solution.)