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A 1.80 MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward the sound receiver as the heart beats. The reflected sound is then mixed with the transmitted sound, and 87 beats per second are detected. The speed of sound in body tissue is 1500 meter per second.
A. Determine the speed of the fetal heart wall at the instant this measurement is made.
An object is placed 64.5 cm from a screen. Find the magnification of the lens
Charge Q = 10E-8 C is placed in the origin. Location A is -3.00m from the charge while location B is 2.00m from the charge. A) Find the potential difference VB - VA between the two points. B) Which point is at the higher potential? Type either "Po..
A meat baster consists of a squeeze bulb attached to a plastic tube. When the bulb is released and squeezed, with the open end of the tube under the surface of the basting sauce, the sauce rises in the tube to a distance h, as the drawing shows.
A tiny ball of mass 0.425 g is suspended by a thread of negligible mass in a horizontal electric field of 400 N/C. what will be the deflection angle of the string
A nucleus moving at 0.6c through the lab decys, emitting a photon in the forward direction. With what speed does the photon travel
Determines increases or decreases in a series of financial statement data and indicates the level of full and transparent information provided to users of the financial statements.
consider a 1000l cstr in which biomass is being produced with glucose as the substrate. the microbial system follows a
A concave spherical mirror has a radius of 20 cm. A real object is placedon the optical axis 15 cm from the mirror. Compute where the image is and describe i
An object is 12cm to the left of a lens with f=20cm. a secondlens with f=4cms is 2cms to the right of the first lens. find the image distance as measured from the second lens
The electric motor of your new 2012 Chevrolet Volt is rated at 111 kW [W=J/s]. The mass of the car is 1600kg. How much time will it take to reach the higher speed
A child of mass 47 kg jumps onto the edge of a merry-go-round of mass 155 kg and radius 1.7 m that is initially at rest, What is the angular velocity of the merry-go-round plus child after the child jumps onto the merry-go-round
A block of mass 20kg is sliding down an incline plane with no friction. Find the normal force and the acceleration of the object
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