58. mmh For tests using a ballistocardiograph, a patient lies on a horizontal platform that is supported on jets of air. Because of the air jets, the friction impeding the horizontal motion of the platform is negligible. Each time the heart beats, blood is pushed out of the heart in a direction that is nearly parallel to the platform. Since momentum must be conserved, the body and the platform recoil, and this recoil can be detected to provide information about the heart. For each beat, suppose that 0.050 kg of blood is pushed out of the heart with a velocity of +0.25 m/s and that the mass of the patient and platform is 85 kg. Assuming that the patient does not slip with respect to the platform, and that the patient and platform start from rest, determine the recoil velocity.

Question
58.
mmh For tests using a ballistocardiograph, a patient lies on a
horizontal platform that is supported on jets of air. Because of
the air jets, the friction impeding the horizontal motion of the platform is
negligible. Each time the heart beats, blood is pushed out of the heart in
a direction that is nearly parallel to the platform. Since momentum must
be conserved, the body and the platform recoil, and this recoil can be
detected to provide information about the heart. For each beat, suppose
that 0.050 kg of blood is pushed out of the heart with a velocity of +0.25 m/s
and that the mass of the patient and platform is 85 kg. Assuming that the
patient does not slip with respect to the platform, and that the patient and
platform start from rest, determine the recoil velocity.
Expand
Transcribed Image Text

58. mmh For tests using a ballistocardiograph, a patient lies on a horizontal platform that is supported on jets of air. Because of the air jets, the friction impeding the horizontal motion of the platform is negligible. Each time the heart beats, blood is pushed out of the heart in a direction that is nearly parallel to the platform. Since momentum must be conserved, the body and the platform recoil, and this recoil can be detected to provide information about the heart. For each beat, suppose that 0.050 kg of blood is pushed out of the heart with a velocity of +0.25 m/s and that the mass of the patient and platform is 85 kg. Assuming that the patient does not slip with respect to the platform, and that the patient and platform start from rest, determine the recoil velocity.

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Science
Physics

Collisions

Related Physics Q&A

Find answers to questions asked by students like you.

Q: A 25-μF capacitor is connected to an emf given by v(t) = (160 V) sin (120πt) . (a) What is the react...

A: Click to see the answer

Q: At what frequency is the reactance of a 20-μF capacitor equal to that of a 10-mH inductor?

A: Click to see the answer

Q: An object’s apparent weight is slightly less when it is at the equator than when it is at the North ...

A: Centrifugal force is pseudo  force which is effect of an inertia.  A centrifugal force arises due to...

Q: the intensity of light from a bulb is inversely proportional to the square of distance from the bulb

A: Click to see the answer

Q: A 35-cm-tall, 5.0-cm-diameter cylindrical beaker is filled to its brim with water. What is the downw...

A: Given data *The diameter of cylindrical beaker is d = 5.0 cm = 0.05 m *The length of the beaker is h...

Q: . A small car and a heavy pickup truck are both out of gas.The truck has twice the mass of the car. ...

A: Momentum The momentum of the car depends only on the force applied and the time interval. Thus, it ...

Q: (II) A mallet consists of a uniform cylindrical head of mass 2.30 kg and a diameter 0.0800 m mounted...

A: Given: A mallet consists of a uniform cylindrical head of mass2.30 kg and a diameter 0.0800 m mounte...

Q: In the figure what are the (a) magnitude and (b) direction (from x-axis in the counterclockwise dire...

A: (a) Use Coulomb’s law to find the magnitude of the electric force (F1) on particle 4 due to particle...

Q: Does the speedometerin your car measure average orinstantaneous velocity?

A: Click to see the answer

Q: Is there any place on Earth where all the visible stars are circumpolar? If so, where? Is there any ...

A: Click to see the answer

Q: **65. ssm Two people are standing on a 2.0-m-long stationary platform, one at each end. The platform...

A: Given Data: The length of a platform is, L=2.0 m The mass of a ball is m=6.0 kg The total mass of th...

Q: Problem 7 Geosynchronous Satellites. Many satellites are moving in a circle in the earth's equatoria...

A: Click to see the answer

Q: The current shown in part (a) below is increasing, whereas that shown in part (b) is decreasing. In ...

A: a) The current is increasing, that means the current is flowing from lower potential to higher poten...

Q: if block A is moving downward with a speed of 4ft/s while c is moving up at 2ft/s. determine the mag...

A: Given: Speed of the block A that is moving down = 4 ft/s Speed of the block C that is moving up = 2 ...

Q: Consider the definitions of speed and acceleration. For motion along a straight line it Is possible ...

A: An object moving in a straight line with a constant speed will have zero acceleration. As it is movi...

Q: Write the reading on Main scale and circular scale, LC is 0.1mm

A: Introduction: Now a days many instruments available to precise measurement of the length. One of the...

Q: 17. The drawing shows three particles that are moving with different ve- locities. Two of the partic...

A: Click to see the answer

Q: A 1050-kg car rounds a curve of radius 72 m banked at anangle of 14°. If the car is traveling at 85 ...

A: Given data The mass of the car is m = 1050 kg. The radius of the curve is r = 72 m. The angle of ban...

Q: You throw a 20-N rock vertically into the air from ground level. You observe that when it is 15.0 m ...

A: Click to see the answer

Q: (I) Estimate the moment of inertia of a bicycle wheel 67 cm in diameter. The rim and tire have a com...

A: Moment of inertia gives us a combined factor of the mass of a rotating object and how that mass is d...

Q: What is the electric potential 12.0 m from a point charge of 0.40 C, assuming thatthe potential is z...

A: Click to see the answer

Q: A coil with a self-inductance of 3.0 H and a resistance of 100 Ω carries a steady current of 2.0 A. ...

A: Given The inductance of the coil is L = 3 H. The resistance of the coil is R = 100 Ω. The current ca...

Q: | The drawing shows a human figure in a sitting position. For purposes of this problem, there are th...

A: The x and y coordinate of the center of mass system for the three particle system can be calculated ...

Q: What is the average kinetic energy in joules of hydrogen atoms on the 5500 °C surface of the Sun?

A: Click to see the answer

Q: (I) Pilots can be tested for the stresses of flying high-speedjets in a whirling “human centrifuge,”...

A: (a) Write the formula for the angular displacement θ.

Q: What is the speed of a car going v=1.000mphv=1.000mph in SI units?

A: Given data The speed of car is given as: v = 1 mphv = 1 mph   The conversion factor from hour to sec...

Q: 9) The figure shows a pV diagram for 8.3 g of nitrogen gas (N2) in a sealed container. The temperatu...

A: Click to see the answer

Q: Is it possible for the temperature of a system to remain constant when heat flows into or out of it?...

A: Click to see the answer

Q: 25. The power needed to accelerate a projectile from rest to its launch speed v in a time t is 43.0 ...

A: Write the expression for the relation between the power needed and the energy of the projectile when...

Q: There are four traffic lights on a stretch of road and the distance between each traffic light is 30...

A: The following data is provided: 4 traffic lights at a distance of 300m each 10 sec lag between traff...

Q: Assume that the force of a bow on an arrow behaves like the spring force. In aiming the arrow, an ar...

A: Click to see the answer

Q: The solid dot shown in Fig. 8–36 is a pivot point. The board can rotate about the pivot. Which force...

A: Assume the length of the board is x. (a) For Force F = 1000 N, the torque can be calculated as, Her...

Q: A model rocket is launched straight upward with an initial speed of 40.0 m/s. It accelerates with a ...

A: Given  The initial speed of the rocket is u = 40 m/s. The constant acceleration is a = 1.50 m/s2. Th...

Q: A solenoid of N1 turns has length l1 and radius R1, and a second smaller solenoid of N2 turns has le...

A: Given data: The number of turns of the first larger solenoid is: N1 The radius of a larger solenoid ...

Q: A sphere of radius R has a charge density given by p = Po/r² where po is a constant. Find the electr...

A: According to the Gauss’s law, Here, q is the charge enclosed within the gaussian surface, E is the ...

Q: A person drops a pebble of mass m1 from a height h, and it hits the floor with kinetic energy K. The...

A: Click to see the answer

Q: Redraw the motion diagram shown, then draw a vector beside it to show the direction of the net force...

A: Since the given motion diagram shows that the velocity decreases gradually, that is, the object dece...

Q: A block falls from rest off a building that is y = 185 m tall. At what time,in seconds, does the blo...

A: Click to see the answer

Q: *10. mmh A stream of water strikes a Stationary turbine "0 = +16.0 m/s stationary turbine blade hori...

A: Given: Incident velocity of water (vo) = +16.0 m/s. Exiting velocity of water (vf) = -16.0 m/s. Rate...

Q: You have a parallel plate capacitor with plates of 2.0 m2 , 3.0 m apart, and themagnitude of charge ...

A: Write the formula for the capacitance of a parallel plate capacitor. Substitute the known value and...

Q: A 300 g hockey puck is shot across an ice-covered pond. Before the hockey puck was hit, the puck was...

A: Click to see the answer

Q: EXAMPLE 34 The acceleration a of a particle moving with an initial velocity u varies with distance x...

A: Click to see the answer

Q: A diffraction grating with 350 slits/mm is illuminated by white light (400-700 nm). A screen is plac...

A: After the diffraction, the white light will disperse into its components that are into VIBGYOR. It a...

Q: How is the reversible process different from the thermodynamic process?

A: Click to see the answer

Q: Static climbing ropes are designed to be relatively stiff so that they stretch less than dynamic rop...

A: Click to see the answer

Q: Experiments using “optical tweezers” measure the elasticity of individual DNA molecules. For small e...

A: Given The force applied to the DNA molecule is F = 1.5 x 10-9 N. The molecule is stretch due to forc...