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Explain various factors that led to the scramble and partition of Africa and West Africa in particular by European powers
(Metropolitan and peripheral approach)
The mass then travels vertically and it takes 1.10 s for the mass to reach the top of its trajectory. Determine the spring constant, in N/m. (Use g=9.81 m/s2). Assume that the time required for the spring to reach its full extension is negligible.
The picture below shows a model of a human leg with a heavy weight on the ankle. It represents a person lying on his back doing leg-lifts to exercise the quadriceps. What is the magnitude of the gravitational torque
an electronic flash attachment for a camera produces a flash by using the energy stored in a 770 microf capacitor.
Estimate the ratio of the intensity of an earth quake wave as it passes a point 21 kilometer from the source to the intensity as it passes a point 14 kilometer from the source
Find the speed of an orbiter in a circular orbit that is just above the surface of a planet, given that the orbiter's acceleration is equal to the planet's gravitational acceleration of 2.36 m/s2
A circular loop of diameter 10 cm, carrying a current of 0.20 A, is placed inside a magnetic field = 0.30 T. Calculate the magnitude of the torque on the loop due to the magnetic field
consider three identical metal spheres a b and c. sphere a carries a charge of 5q. sphere b carries a charge of -q.
A snowboarder of mass 79 kg travels down the slope of height 150 m, what is the work done on her by friction
A rifle with a weight of 20 N fires a 3.0 g bullet with a speed of 260 m/s. If a 700 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle
Derive an expression for the heat rejected to the high-temperature reservoir.- Assume a value of 5 for the coefficient of performance and comment on the effectiveness of a heat pump.
A 5* 10^2 kg hot air balloon takes off from rest at the surface of the earth. The non conservative wind and lift forces take the balloon up, doing +9.70*10^4J of work on the balloon in the process. At what height above the surface of earth does th..
two charged balls one with a charge of 5.0 micro coulombs and the other with a charge of 2.4 micro coulombs are placed
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