Question F2 N FUN 2 m F1 N 1.5 m A B 4 1 m Find the moment about point B if F1=18N, F2=F3-39N. Provide the correct sign for your answer (negative for clockwise moment, no sign for counterclockwise moment)

Constants Part A Rutherford's scattering experiments gave the first indications that an atom consists of a small, dense, positively charged nucleus surrounded by negatively charged electrons. His experiments also allowed for a rough determination of the size of the nucleus. In this problem, you will use the uncertainty principle to get a rough idea of the kinetic energy of a particle inside the nucleus. Consider a particle inside the nucleus. The uncertainty Ax in its position is equal to the diameter of the nucleus. What is the uncertainty Ap of its momentum? To find this, use AxAp> 方2 Consider a nucleus with a diameter of roughly 5.0 x 10-15 meters. ► View Available Hint(s) VO AED ? Δp = = kg.m/s Submit

Use Ammonia properties of liquid and saturated vaport table A single-acting, twin-cylinder 15.25 x 15.25-cm compressor receives saturated ammonia vapor at -18°C and discharges it at 1514.3 kPa. The system is used to produce ice at a final temperature of -10°C from water at 27°C. The compressor runs at 450 rpm with an actual volumetric efficiency of 78%. Assume compression and mechanical efficiencies to be 82% and 88%, respectively. Calculate the following: (a)capacity of the system in tons of refrigeration, (b) brake hp required by the compressor, (c) tons of ice produced per day if compressor runs only 20 hours a day. Assume losses to be 10% of the refrigeration required to produce the ice, and (d) ideal and actual COP.

Conduct independent research and provide an overview of the intent of each of these legal and ethical requirements and how they are applied in an organisation and individual practice. Privacy, confidentiality and disclosure. Duty of care. Dignity of risk. Human rights. Discrimination. Mandatory reporting. Work role boundaries.

Find the exact area of the surface obtained by rotating the curve about the x-axis. x = 2 + 4y2, 1<ys 2

Gravel is being dumped from a conveyor belt at a rate of 40 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always equal. How fast is the height of the pile increasing when the pile is 18 feet high? Recall that the volume of a right circular cone with height h and radius of the base r is given by 1. V ft min

The two blocks in Fig. P4.54 are connected by a heavy uniform rope with a mass of 4.00 kg. An upward force of 200 N is applied as shown, ( a ) Draw three free - body diagrams: one for the 6. 00 - kg block, one for the 4.00 - kg rope, and another one for the 5.00 - kg block. For each force, indicate what body exerts that force. ( b ) What is the acceleration of the system? ( c ) What is the tension at the top of the heavy rope? ( d ) What is the tension at the midpoint of the rope?