Anasa centrifuse spins astronauts around in a compartment attached to a long arm. a diagrem of the centrifuge is shown below.

a. draw and label the direction of the velocity vector on the picture.

b. draw and label the direction of the centripetal acceleration vector on the picture.

c. if the arm has a radius of 7.1 m and spins the astronaut with a speed of 13.5 m/s, what is the acceleration of the astronaut?

d. the maximum acceleration the centrifuge can produce is 14.5 g/ what is the acceleration in

e. how fast would the compartment have to move to produce an acceleration of 14.5 g?

In a steady-flow steam power plant system, two adiabatic high-pressure and low-pressure turbines ane used to generate power. superheated steam enters the high-pressure turbine at 8 mpa and 550°c. the steam expands in the high-pressure turbine to a saturated vapor at 3 mpa. in order to increase the powe generation of the power plant, another steam turbine working in a lower pressure ranges is deployed. the outlet vapor from the first turbine is heated up at a boiler to the temperature of 500 c at the constant pressure of first turbine's outlet (3 mpa). then, the vapor enters the second turbine and produces extra work. the exit conditions of the second turbine are 5o kpa and 90 percent quality. if the total power output of the power plant is 25 mw, determine a) the mass flow rate of the water (kg/s). b) heat transfer rate in the boiler (mw). (30 points) 3 mpa 00 c 8 mpa s0 c high pres turbine low pres boiler turbine 50 kpa 3 mpa 09 saturated vapor t heat engine, shown in the figure, operates between high temperature and low temperature of through a heat 4. a carnot tn and tu respectively. this heat engine receives energy from a heat reservoir at t exchanger where the heat transferred is proportional to the temperature difference as ? = k (z,-7, ). it rejects heat at a given low temperature tl. to design the heat engine for maximum work output, find the high temperature, th, as a function of tes and t. (15 points) qe

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack