My morning cup of tea is steaming hot at 95°C. I take a 37 g ice cube from my freezer that has a temperature of -18°C.  (Use specific heat for water for the tea.) Show all work How much heat does it take to raise the temperature of the ice cube to melting? How much heat does it take to melt the ice cube? How much tea do I need to equilibrate at my ideal tea drinking temperature of 67.4°C?

Please check if this question was done correctly and I have add the appropriate units

How much work is required to set up the arrangement of the figure below if q = 300nC (300 x 10-9C) and d = 13cm. Assume that the particles are inititally infinitely far apart and at rest.  q = +q1 = -q2 = +q3 Please refer to the image attached below. Thank you very much.

MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Two blocks are connected by a light string that passes over a frictionless pulley as in the figure below. The system is released from rest while m, is on the floor and m, is a distance h above the floor. (a) Assuming m, > m2, find an expression for the speed of m, just as it reaches the floor. (Use any variable or symbol stated above along with the following as necessary: g.) (b) Taking m,- 6.9 kg, m, = 3.9 kg, and h- 3.5 m, evaluate your answer to part (a) m/s (c) Find the speed of each block when m, has fallen a distance of 1.2 m. m/s