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A uniform rope of uniform weight W hangs between two trees. The ends of the rope are the same height and they each make and angle theta with the trees. What is the tension at either end of the rope. Find the tension at the middle of the rope. Please explain how you got arrived at your answers.
What current is in the primary circuit. A proton moves at a speed of 8.0 103 m/s as it passes through a magnetic field of 0.55 T. Find the radius of the circular path. Note down that the charge carried by the proton is equal to that of the electron..
Two lenses are mounted in a tube such that the distance between them can be varied. What is the magnification achieved
Calculate the threshold frequency and wavelength for photoelectric effect from magnesium
A block of mass m1 =3.6 kg rests on a frictionless horizontal surface. Find the acceleration of the two blocks after they are released
The starter motor of a car engine draws a current of 180A from the battery. How far does an electron travel along the wire while the starter motor is on
A bullet of mass 4.00g is fired horizontally into a wooden block of mass 1.26kg resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.240. What was the initial speed of the bullet
When you put water in a kitchen blender, it begins to travel in a 3-cm-radius circle at a speed of 1 m/s. How quickly is the water accelerating
A bungee cord is stretched between two poles with a force of 357 N. What is the velocity of a wave on this bungee cord
A cube of side of length 0.55 m has a temperature of 310 K and is in a room surrounded by 15.8ºC walls. what is the energy loss rate of the cube
An aluminum rod is 23.0 cm long at 20°C and has a mass of 350 g. If 15000 J of energy is added to the rod by heat, what is the change in length of the rod
Two particles of masses M1 = 93000 kg and M2 = 4200 kg are initially at rest an a distance 148.1 km apart. How much time does it take for the particles to collide
A particle with charge +7.20 nC is in a uniform electric field directed to the left. What is the magnitude of the electric field
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