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Three point charges are positioned as follows: q1 is at (0.00 m, 0.00 m), q2 is at (1.20 m, 0.00 m), and q3 is at (1.20 m, 1.60 m). If q1 = 1.00 µC, q2 = 2.00 µC, and q3 = 3.00 µC, what is the magnitude of the force on q2? 

The heat of fusion for ice at 0°C is 333.7 kJ/kg. What is the energy needed to melt 100 grams of ice at 0.00°C?  Express your answer in kJ.

The figure displays a closed cycle for a gas (the figure is not drawn to scale). The change in the internal energy of the gas as it moves from a to c along the path abc is -164 J. As it moves from c to d, 178 J must be transferred to it as heat. An additional transfer of 77.5 J to it as heat is needed as it moves from d to a. How much work is done by the gas as it moves from c to d?

The rate of heat flow through a slab is Pcond. If the slab thickness is doubled, its cross-sectional area is halved, and the temperature difference across it is doubled, then the rate of heat flow becomes:

Calculate the minimum amount of energy, in joules, required to completely melt 183 g of silver initially at 38.0°C. The melting point of silver is at 962°C. Its specific heat capacity is 236 J/kg·K and its latent heat of fusion is 105 kJ/kg.

Two particles are fixed to an x axis: particle 1 of charge -1.98 × 10-7 C is at the origin and particle 2 of charge +1.98 × 10-7 C is at x2 = 17.7 cm. Midway between the particles, what is the magnitude of the net electric field?

A sample of an ideal gas is taken through the cyclic process abca shown in the figure. The scale of the vertical axis is set by pb = 7.79 kPa and pac = 4.12 kPa. At point a, T = 189 K.  Find the temperature of the gas at point c.Assume Va = 1.86 m3, Vbc = 4.05 m3.

The coefficient of linear expansion of iron is 10–5 per C°. The volume of an iron cube, 5 cm on edge, will increase by what amount if it is heated from 10°C to 60°C. (express your answer in cm3)

Which is correct regarding the disposal of contaminated needles?

Alcohol-based hand rubs must contain at least __________% alcohol to be effective