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Water at temperature 25°C flows from a tap T into a heated container C. The container has a heating element (a resistor R) which is supplied with electrical power, P, that may be varied. The rate of flow of water F = 0.030 litres per minute. The electrical power is sufficient that C the water in the container is boiling. What is the minimum power that must be supplied in the steady state so that the amount of liquid water in R the container neither increases nor decreases with time? You may neglect other losses of heat, such as conduction and radiation from the container to the air.
you are given vectors a? 5.1 i? 6.6 j and b? - 3.6 i 7.1 j. a third vector c? lies in the xy-plane. vector c? is
Find the final temperature of the calorimeter after equilibrium is reached. If the final temperature is 0oC, what fraction of the ice is melted?
Show that in the Bohr model, the frequency of revolution of an electron in its circular orbit around a stationary hydrogen nucleus is f = me4/4µ02n3h3.
A cylindrical space station with a radius of 38 m is rotating so that points on the walls have speeds of 18 m/s. What is the acceleration due to this artificial gravity at the walls
The color of many ceramic glazes comes from cadmium compounds, If a piece of cadmium with mass 65.6 g and a temperature of 100.0°C is dropped into 25.0 cm3 of water at 23.0°C, what will be the final temperature of the system
The mass needed to overcome the friction of the axle with just the platter alone is 10.4 gram. Determine what is the acceleration
One fish leaps with an initial velocity at the water surface of 12.5m/s at an angle of 33.0 degrees above the horizontal
An object dropped from the window of a tall building hits the ground in 12 second. Find the height of the window above the ground
A laser emits a narrow beam of light. The radius of the beam is 3.9 mm, and the power is 3.6 mW. What is the intensity of the laser beam
A space traveller whose mass is 104kg leaves earth. What are his weight and masson earth and in interplanetary space where there are no near planetary objects.
Explain to them the principles of rotational dynamics as illustrated with a bicycle wheel and discuss this theory.
A 220-cm-square sign is impacted straight on by a 50 m=s 10-C wind. Estimate the force on the sign. If the sign is held by a single 3-m-high post imbedded in concrete, what moment would exist at the base of the post?
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