Guys plzzz plzzz ans this que 14. The rate of mass of the gas emitted from rear of
a rocket is initially 20 kg/s. If the speed of the gas
relative to the rocket is 800 m/s and mass of
rocket is 1000 kg, then the initial acceleration of
the rocket is :
(1) 4 m/s2
(2) 16 m/s2
(3) 6 m/s2
(4) 12 m/s2

Na food processing facility, a spherical container of inner radius r1 5 40 cm, outer radius r2 5 41 cm, and ther- mal conductivity k 5 1.5 w/m · k is used to store hot water and to keep it at 100°c at all times. to accomplish this, the outer surface of the container is wrapped with a 800-w electric strip heater and then insulated. the temperature of the inner surface of the container is observed to be nearly 120°c at all times. as- suming 10 percent of the heat generated in the heater is lost through the insulation, (a) express the differential equation and the boundary conditions for steady one-dimensional heat conduction through the container, (b) obtain a relation for the variation of temperature in the container material by solving the differential equation, and (c) evaluate the outer surface tempera- ture of the container. also determine how much water at 100°c this tank can supply steadily if the cold water enters at 20°c.

What are the three ways that an object can accelerate

Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h