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The left ventricle of the heart accelerates blood from rest to avelocity of +24cm/s.
(a) If the displacement of the blood during the acceleration is+1.7 cm,determine its acceleration (in cm/s2).(b) How much time does blood take to reach its final velocity?
A helicopter has two blades, each of which has a mass of 270 kg and can be approximated as a thin rod of length 6.7 m. The blades are rotating at an angular speed of 54 rad/s. (a) What is the total moment of inertia of the two blades about the axis o..
When a ceiling fan rotating with an angular speed of 5.6 rad/s is turned off, What is the moment of inertia of the fan
A step-up transformer has 30 turns on the primary coil and 800 turns on the secondary coil. what input current and voltage are needed
An object is located on the inner side of a spinning cylinder with an angular velocity of 20rad/s. what is the radius of the cylinder
The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. Find the power consumed by the air filter
A 24-V battery is connected in series with a resistor and an inductor, with R = 9.0 ? and L = 7.8 H, respectively, Find the energy stored in the inductor when the current reaches its maximum value
A spring with 58 hangs vertically next to a ruler. The end of the spring is next to the 11- mark on the ruler. If a 2.5- mass is now attached to the end of the spring, illustrate where will the end of the spring line up with the ruler marks?
It is 150 cm from your eyes to your toes. You are standing 196 cm in front of a tall mirror. How far is it from your eyes to the image of your toes.
A very thin sheet of glass (n=1.5) floats on the surface of water (n=1.33). When illuminated with white light at normal incidence, What is the thickness of the glass
You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. Find the angle of incidence of the laser ray on the mirror
A ball is dropped from a height of 4 m and makes an elastic collision with the ground. Assume that no mechanical energy is lost to air resistance. (a) Show that the ensuing motion is periodic. (b) Determine the period of the motion. (c) Is the motion..
A huge explosion is heard 26.2 miles away. How long does it take the sound to travel that far
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