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Question1
Analyse the crystal thickness, PD, DF, PRF, PRP, SPL, period, and distance to reflector if a 3 cycle pulse emitted from a 3 MHz transducer if echo time received was 0.130 ms in soft tissue. Using an information over-
1. If frame rate increases what happens to the PRF?
2. If crystal thickness increases what happens to the SPL?
3. If beam width increases what happens to the lateral resolution (improves or degrades)?
4. If crystal thickness increases what happens to DF?
A 125-turn circular coil of radius 2.75 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. Find the magnitude of the average EMF
You throw a 13.0N rock into the air from ground level and observe that, when it is 13.0m high, Use the work-energy principle to find the maximum height the rock will reach
The leg and cast weigh 290 -N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w2 weighs 120 N. Determine the weight w1 and angle α needed in order that there is no force exerted on the hip joint by the le..
The magnetic fild inside a superconducting solenoid is 4.50 T. The solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. Determind the magnetic energy density in the field
A tennis ball is thrown toward a vertical wall with a speed of 22.0 m/s at the angle of 40.0° above the horizontal. The horizontal distance between the wall and the point where the tennis ball is released is 28.0 m.
An engineer has designed a machine to produce electricity by using the difference in the temperature of ocean water at different depths. what is the maximum efficiency of this machine
A rod of length L and charge Q is placed right next to another identical rod with charge -Q. What is the direction of the electric field at point P on the +y axis
Mary applies a force of 70 N to push a box with an acceleration of 0.49 m/s2. When she increases the pushing force to 80 N, What is the mass of the box
Find the slit seperation of a double slit system that will produce bright interference fringes 1.00 degrees apart
The hot resistance of a flashlight bulb is 2.20 , and it is run by a 1.53 V alkaline cell having a 0.100 internal resistance. Calculate the power supplied to the bulb using I2Rbulb
A person with perfect pitch sits on a bus bench listening to the 445 Hz horn of an approaching car. If the person detects the frequency of 488 Hz, how fast is the car moving.
An auto goes from 0 to 30 m/s in 5 s, at a uniform rate of acceleration. The radius of the auto's tires is .33 m. How many revolutions per second are the tires making
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