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The block diagram of the control of an electric heating system. The heater is driven from a voltage-controlled power supply, the voltage V1 being derived from a potientiometer. The output temperature, θO, is subject to disturbances, θD, because of changes in the ambient temperature. It is proposed to apply 'disturbance feedback control' to the system by the inclusion of a transducer that measures the external temperature and feeds a signal back to the input via a proportional controller of gain H. Determine the required value of H to eliminate the effect of the disturbance.
atmospheric pressure as measured by a mercury barometer is 99.0 kPa, a patient is fed by intraveneous feeding. How high is the mercury in the barometer
A loudspeaker of mass 18.0kg is suspended a distance of h = 2.00m below the ceiling by two cables, What is the Tension T in each of the cables
Say you have a piston falling in a cylinder filled with water. The water is plumbed from the bottom of the cylinder to the top, What would the kinetic energy be at the end of a 20m descent
A 0.19-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.6 m. What is the change in gravitational potential energy of the system from release to reaching the bottom of the well
The Moon has an angular size of 0.50 ? when viewed with unaided vision from Earth. What is the angular size of the Moon as seen through this telescope
An 8000-kg freight car rolls along rails with negligible friction. The car is brought to rest by a combination of two coiled springs.
A 1360 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960 N crate hangs from the far end of the beam.
What is the location of an object for which the magnitude of the image distance is one-fourth the magnitude of the object distance
make Use of a 9.81 m/s^2 for the magnitude of the acceleration due to gravity.
A moon rock is thrown upward with initial velocity 5.0 m/s. After 5.0 s it has a downward velocity of 3.0 m/s. What is the acceleration due to gravity on the Moon
when it falls back it hits the ground with speed v1=50m/s. The mass of the ball is m=20g. Evaluate what is the total work done by the drag force while the ball is in the air?
Determine the magnitude of the total initial momentum of the two-block system. Find , the magnitude of the final velocity of the two-block system. What is the change in the system's kinetic energy due to the collision?.
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