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Three point charges +1nC, +2nC, -3nC are placed in two adjacent vertices and in the center of a square with 3 meter long sides, find electric field (magnitude and direction) and electric potential (magnitude and sign) in the empty vertices of the square. find total potential energy of the interaction between the charges. find force of interaction between the charges in the vertices.
A cord of length 1.4 meter is fixed at both ends. Its mass per unit length is 1.0 g/m and the tension is 11 N. Evaluate the frequency of the fundamental oscillation
heat is a energy transferred by virtue of a temperature difference b energy transferred by macroscopic work c energy
An ice chest at a beach party contains 12 cans of soda at 2.41°C. Each can of soda has a mass of 0.35 kg and a specific heat capacity of 3800 J/(kg C°). Someone adds a 9.97-kg watermelon at 23.5 °C to the chest.
One string of a certain musical instrument is 80.0cm long and has a mass of 8.72 g. It is being played in a room where the speed of sound is 344m/s, What frequency sound does this string produce in its fundamental mode of vibration
An ideal refrigerator does 130 J of work to remove 655 J of heat from its cold compartment during each cycle. How much heat per cycle is exhausted to the kitchen
assume the film show in the figure has an index of refraction of 1.36 and is surrounded by air on both sides.
A.) What is the total negative charge, in coulombs, of all the electrons in a small 1.00 sphere of carbon? One mole of is 12.0 , and each atom contains 6.00and 6.00 electrons.
A certain digital camera having a lens with focal length 7.5 cm focuses on an object 1.80m tall that is 4.35m fromt he lens. How far must the lens be from the photocells
A particle starts from the origin with velocity 5 m/s at t = 0 and moves in the xy plane with a varying acceleration given by = (8t), Determine the velocity of the particle as a function of time
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, producing the net wave y(x,t)=(6.0 mm)sin(24.0x -2.0 s-1 * t+0.320 rad), with x in meters and t in seconds. What is the wavelength ? of the two waves? W..
The great, grey-green, greasy Zambezi River flows over Victoria Falls in south central Africa. find the velocity of the water when it hits the bottom
A certain microwave oven produces microwaves of frequency 2450 MHz by a power of 500 W. How long must it take to heat 556 g of water, initially at room temperature, to the boiling point? Suppose that all the microwave energy is engrossed by the water..
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