QUESTIONS AND ANSWERS

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.)

Question which object will sink in freshwater, which has a density of 1.0 g/cm3? Final Answer In a freshwater, an object will sink if its… Read More »which object will sink in freshwater, which has a density of 1.0 g/cm3?

Question What is the density of an object with a mass of 100 g and a volume of 50 cm3? Final Answer The final answer… Read More »what is the density of an object with a mass of 100 g and a volume of 50 cm3?

Question a book has a mass of 50 kg and an acceleration of 5 m/s2. what is the force on the book? Final Answer We… Read More »a book has a mass of 50 kg and an acceleration of 5 m/s^2. what is the force on the book?

Question At what height is an object that has a mass of 50kg, if its gravitational potential energy is 9800j? Final Answer When we use… Read More »at what height is an object that has a mass of 50kg, if its gravitational potential energy is 9800j?

Question what length of copper wire, 0.462 mm in diameter, has a resistance of 1.00 ω? Answer: The task that we have at hand involves… Read More »what length of copper wire, 0.462 mm in diameter, has a resistance of 1.00 ω?

Question calculate the velocity a spherical raindrop would achieve falling from 5.00 km Answer The spherical raindrop falling from a height of 5.00 kilometres would… Read More »calculate the velocity a spherical raindrop would achieve falling from 5.00 km

Defining Free Fall Acceleration: Before we tackle the peculiar unit, we will need to clarify what free fall acceleration is. Free fall acceleration is the… Read More »The acceleration of free fall is about 10 m/s2. why does the seconds unit appear twice?

Question vector A has a magnitude 6 units and is in the direction of the +x-axis. Vector B has a magnitude 4 units and lies… Read More »Vector A has a magnitude 6 units and is in the direction of the +x-axis

Question Find the angle between the two vectors A = 2i + 3j + k, and B = -4i + 2j – k Answer The… Read More »Find the angle between the two vectors A = 2i + 3j + k, and B = -4i + 2j – k

Question Find the scalar product A • B of the two vectors. The magnitudes of the vectors are A = 4.00 and B = 5.00.… Read More »Find the scalar product A • B of the two vectors. The magnitude of the vectors are A = 4.00