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Biological muscle cells can be thought of as nanomotors that use the chemical energy of ATP to produce mechanical work. Measurements show that the active proteins within a muscle cell (such as myosin and actin) can produce a force of about 8.0pN and displacements of 7.5nm. How much work is done by such proteins?
present an explanation of why you selected each activity and how it can contribute to the prenatal, postpartum, and future development of each woman's child.
If we want to have successive fringes on a screen 5.9 cm apart near the center of the pattern, where should we place the screen
A cannon ball is fired horizontally with a velocity of 600 m/s from the top of a cliff 1000 m high.
Suppose you have a rectangular wooden block with dimensions 8.0 cm x 8.0 cm x 9.0 cm that has a density of 0.85 x 10^3 kg/m^3. What is the volume of the wood in the wooden block
A negative charge of -2.0 multiplied by 10-4 C and a positive charge of 9.5 multiplied by 10-4 C are divided by 0.30 m. What is the force between the two charges.
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.763 rev/s, Calculate the initial and final kinetic energies for this system.
Find out the distance traveled (in meters) by the jet as the observer watches the nose of the jet cross from one side of the moon to the other.
Calculate the angular velocity? of an electron orbiting a proton in the hydrogen atom, given the radius of the orbit is 0.500x10-10 m . You may assume that the proton is stationary and the centripetal force is supplied by Coulomb attraction.
Objects A and B are both positively charged. Both have a mass of 200g, How large is the force on A and What is the charge qA and qB
A proton (q=1.6x10^-19 columbs) and mass = 1.67x10^-27 kg is placed 5 cm away from the center of a charged, What is the acceleration of the proton
A 50 kg diver in a full layout position, What is the diver's angular velocity when she assumes a tuck position, reducing her radius of gyration to 0.25 m
If a 62.6 kg runner dissipates a power of 60.9 W during a race, explain how fast is the person running? Assume a running step is 1.50m in length
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