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The left ventricle of the heart accelerates blood from rest to avelocity of +21cm/s.
a) If the displacement of the blood during the acceleration is +1.5 cm, determine its acceleration (incm/s2).b) How much time does blood take to reach its final velocity?
21.18 g of copper pellets are removed from a 286°C oven and immediately dropped into 198.5 mL of water at 13°C in an insulated cup
A 0.25?F capacitor is charged to 80V . It is then connected in series with a 25?resistor and a 110? resistor and allowed to discharge completely
A 0.377 kg mass is attached to a spring and undergoes simple harmonic motion with a period of 0.57 s. The total energy of the system is 3 J
An Airbus A310 is initially moving down the runway at 4.5 m/s preparing for takeoff. The pilot pulls on the throttle so that the engines give the plane a constant acceleration of 1.6 m/s2
Bob can see the drai at the bottom center of a water filled pol (n=1.33) that is 3.6 m wide by light emerging 18 degrees above the horizontal
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. evaluate the astronaut's orbital speed
A magnetic field is directed at a 40.0 angle to a plane circular loop of wire with a radius of 26.8 cm. a) draw a diagram showing the wire loop, what is the induced emf in the wire loop
The work function for platinum is 6.35 eV. Ultraviolet light of wavelength 150 nm is incident on the clean surface of a platinum sample. What is the photon energy of the ultraviolet light
A factory worker pushes a 31.4kg crate a distance of 4.35m along a level floor at constant velocity by pushing downward at an angle of 30.3 degrees below the horizontal. What is the total work done on the crate
Beams of high-speed protons can be produced in "guns" using electric fields to accelerate the protons. (a) What acceleration would a proton experience if the gun's electric field were 3.00 104 N/C? m/s2
A small spinning asteroid is in a circular orbit around a star, much like the earth's motion around our sun. The asteroid has a surface area of 9.5 m2. calculate the equilibrium temperature of the asteroid
directed into the plane of the computer screen as shown in the figure. Identify the magnitude and direction of the resultant magnetic field at P.
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