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Bacteria vary somewhat in size, but a diameter of 1.9 μm is not unusual.
A- What would be the volume (in cubic centimeters) of such a bacterium, assuming that it is spherical?
B- What would be the surface area (in square millimeters) of such a bacterium, assuming that it is spherical?
Nobel laureate Richard Feynman (1918-1988) once said that if two persons stood at arm's length from each other and each person had 1% more electrons than protons, the force of repulsion between them would be enough to lift a "weight" equal to that..
a i use the huygens principle to explain how plane parallel wavefronts are diffracted at a single aperture.ii use the
A particle attached to a spring with k 50 N/m is undergoing simple harmonic motion, and its position is described by the equation x (5.7 m)cos(7.5t), with t measured in seconds.
One component of a magnetic field has a magnitude of 0.054 T and points along the +x axis, Determine the angle that the net force makes with respect to the +x axis
Graph the work done by friction versus time from t=0 to t=D/v. Is it positive or negative? What is the power delivered to the block by gravity as it slides down the incline?
you push your physics book 1.50 m alone a horizontal tabletop with a horizontal push of 240 n while the opposing force
at a certain location the earth has a magnetic ?eld of 8.3 times 10-5 t pointing in the northward direction at 44?
A police officer w/a radar gun is parked 20 feet off of the highway. The radar gun reads 75 mph when the car is 100 feet from the police car (as measured along the highway). what is the actual speed of the car?
What is the difference between static friction and kinetic friction? Which one is usually greater? Give an example.
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 4.1 rad/s; 45 radians later, its angular speed is 16 rad/s. Calculate (a) the angular acceleration (rad/s2), (b..
A particle with a charge of 5 x 10^-6 C and a mass of 20g movesuniformly with a speed of 7m/s in a circular orbit around astationary particle with a charge of -5 x 10^-6 C. What is the radius of the orbit?
Two sinusoidal waves, identical except for phase, travel in the same direction along a string producing a net wave y'(x, t) = (2.5 mm) sin(17x - 4.0t + 0.840 rad), with x in meters and t in seconds. (Assume that the phase constant for one of the i..
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