Two blocks, with masses m1 = 0.8 kg and m2 = 1.4 kg, are connected by a string and lie on a frictionless tabletop. A force F = 2.2 N is applied to block m2.

1. Draw a clearly labeled free body diagram for m1. Include all forces and next to the free body diagram draw the direction of the block’s expected acceleration, a1.

Draw a clearly labeled free body diagram for m1 and m2. Include all forces and next to the free body diagram draw the direction of the block’s expected acceleration, a.
1. Find the acceleration of the system.
2. Determine the tension in the string.
3. How fast will block m1 be moving 2 seconds after it is released?
4. How far will block m2 have moved after 3 seconds?

Consider the particle-in-a-box problem in 1d. a particle with mass m is confined to move freely between two hard walls situated at x = 0 and x = l. the potential energy function is given as (a) describe the boundary conditions that must be satisfied by the wavefunctions ψ(x) (such as energy eigenfunctions). (b) solve the schr¨odinger’s equation and by using the boundary conditions of part (a) find all energy eigenfunctions, ψn(x), and the corresponding energies, en. (c) what are the allowed values of the quantum number n above? how did you decide on that? (d) what is the de broglie wavelength for the ground state? (e) sketch a plot of the lowest 3 levels’ wavefunctions (ψn(x) vs x). don’t forget to mark the positions of the walls on the graphs. (f) in a transition between the energy levels above, which transition produces the longest wavelength λ for the emitted photon? what is the corresponding wavele

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

Ahurricane sweeps across the ocean and damages the houses of people living along the coast. which of these does not play any role in this interaction? air water glaciers living things