
attached is the two problems. please explain answers. thank you.

A long piece of wire of mass 0.058 kg and total length of 3.55 m is used to make a square coil with 80 turns. The coil is hinged along a horizontal side, carries a 3.89 A current, and is placed in a v

please see the question in the attached file and thanks

A Halleffect probe operates with a 121 mA current. When the probe is placed in a uniform magnetic field with a magnitude of 0.0758 T, it produces a Hall voltage of 0.691 V. When it is measuring an u

An automobile crankshaft transfers energy from the engine to the axle at the rate of 280 hp (= 208.88 kW) when rotating at a speed of 5500 rev/min. What torque (in newtonmeters) does the crankshaft d

Star X is a distance of 100 pc (parsecs) from Earth and has a luminosity of Lx. Assuming that star Y has the same luminosity (Ly = Lx), at what distance must star Y be from Earth such that the flux f

I'm not sure if this picture will show up, but here is the link. http://www.webassign.net/hrw/hrw7_1018.gif (a) If R = 12 cm, M = 490 g, and m = 60 g (below), find the speed of the block after

I removed three of the questions. There are 10 multiple choice and 2 written. I could pay 70$ for the remaining 12 questions now.

The figure below shows particles 1 and 2, each of mass m, attached to the ends of a rigid massless rod of length L1 + L2, with L1 = 20 cm and L2 = 84 cm. The rod is held horizontally on the fulcrum an

problem on pg 7 LONG PROBLEMS (points indicated per problem) You must show your work and/or write your answers clearly and legibly. Partial credit may be given. All numerical answers must incl
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 The Earth’s rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2000 the Earth takes about 0.548 s longer to complete 365 revolutions than it did in the year 1900.
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1. Can you show me step by step how to solve this problem?:
 A spherical balloon is made from a material whose mass is 3.00kg. The thickness of the material is negligible compared to the 1.5m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19kg/m^3. Find the absolute pressure of the helium gas
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