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A block of mass 3kg is pulled along a flat surface with acord, which makes an angle of 250 above the horizontal.The tension in the cord is 16N, and the coefficient if kineticfriction between the block and the surface is 0.4. Dertermine the acceleration of the block
A long straight wire carries a current that is increasing at the rate of one ampere per microsecond. find In which direction will current flow in each loop
A man is stationary and he observes that the rain is striking him at 60? from the horizantal. When he starts moving with a velocity of 25 m/s, then he observes that the rain strikes him at an angle of 30? from the horizantal. Calculate actual velo..
An explosive is fired from the ground at an angle of 53.1° and a speed of 30.0 m/s. What is the speed of the explosive at the maximum height
A cigarette lighter in a car is a resistor that, when activated, is connected across the 12-V battery. Suppose a lighter dissipates 32 W of power. find the resistance of the lighter
A star in a distant galaxy is located at a distance of 20 kpc from the center of that galaxy. What is the total mass of the dark matter in this galaxy
A 67 kg man weighs 637 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 19 percent of the body weight.
Identical objects are located at the same distance from two spherical mirrors, A and B. Find the ratio fA/fB of the focal lengths of the mirrors
The electric potential energy stored in the capacitor of a defibrillator is 110 J, and the capacitance is 120 ?F. What is the potential difference across the capacitor plates
A solid sphere, solid cylinder and hoop all with the same mass M and radius R roll down an incline without slipping. Determine by how much time the sphere beats the cylinder
A fire hose 10 cm in diameter delivers water at the rate of 22 kg/s . The hose terminates in a nozzle 2.1 cm in diameter. What is the flow speed in the nozzle
Given series of equipotentials Allow a charge to move through three displacements s ,s1,s2 . Calculate the electric field component along each displacement
a projectile is fired at angle of 30 from the horizontal with an initial velocity of 55 ms. find.1. the horizontal
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