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Question1
Man pushing a mop across a floor causes it to undergo two displacements. First has the magnitude of 154 cm and makes the angle of 126° with a positive x axis. The resultant displacement has the magnitude of 147 cm and is directed at an angle of 36.0° to positive x axis. Find out the magnitude and direction of the second displacement.
Question2
A 9.00- bullet, affecting horizontally with an initial speed, embeds itself in a 1.20- pendulum bob that is firstly at rest. The length of pendulum is = 0.730. After the collision, pendulum swings to one side and comes to rest while it has gained a vertical height of 14.0
Is kinetic energy of the bullet-bob system immediately after the collision greater than, less than, or the similar as kinetic energy of the system just before collision?
A mass m = 6.100kg is suspended from a string of length L = 1.310m. What is the angle theta between the string and the vertical
A 75-kg person sits on a 3.7-kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.5 cm in diameter. Find out the pressure exerted on the floor by each leg of the chair; assume the weight is evenly distributed.
You can ignore air resistance. Explain how far from the point of firing does the other fragment strike if the terrain is level?
the index of refraction for red light in water is 1.331 and that for blue light is 1.340. what are the underwater angles of refraction for the blue and red components of the light
How much current is contained within the width of a thin ring concentric with the wire if the ring has the radial width of 12.0 µm and is at a radial distance of 1.2 mm.
A centrifuge whose maximum rotation rate is 11,000 rev/min can be brought to rest in 3.00 s. What is the average angular acceleration of the centrifuge
A mass of 10kg is sliding up a frictionless plane inclined at 10 degree. How far does the mass move up along the plane
Mass of electron = 9.11 x 10-31 kg, h = 6.626 x 10-34 J.s, c = 3 x 108 m/s; 1 eV = 1.6 x 10-19 J, Mass of a proton or neutron = 1836 x mass of electron, Mass of aluminum atom = 26.9 amu, 1amu = 1.66 x10-27 kg.
A small sphere with mass 2.60g hangs by a thread between two large parallel vertical plates 5.00cm apart. The plates are insulating and have uniform surface charge densities and . The charge on the sphere is = 8.70×10?6C . What potential differenc..
What is the result of mixing 80g of ice at -20 degrees Celsius, into a 200g of water at 20 degrees Celsius?
An electric field is E = 400 N/C i for x > 0 and E = -400 N/C i for x
question1take two indistinguishable metallic tumblers a and b. insulate one tumbler say a by wrapping chart paper
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