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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?
a piece of balsa wood with density 0.12gcm3 with mass of 30g in air is affixed to alead sinker with a mass of 400g.
Consider two masses that hang from an overhead beam. The first mass of 62.9 kg is attached to the beam using an ideal rope. Find the tension in the lower rope
A 24-kg boy stands 6 m from the center of a frictionless playground merry-go-round, which has a moment of inertia of 240 kg m2. Calculate the speed of the boy relative to the surface of the merry-go-round
A proton of mass m is moving with initial speed v0 directly toward the center of an alpha atom of mass 4m, which is initially at rest. Determine the speed of the alpha atom
Which of the following will reduce the time constraint in an RC circuit? a-Increasing voltage of the battery b-adding an additional resistor in parallel with the first resistor c-increasing the dielectric constant of the capacitor d-adding an additio..
Adult cheetahs, the fastest of the great cats, have a mass of about 7 kg and have been clocked at up to 70 mph 31m/s. By what factor would its kinetic energy change if its speed were doubled
A hydrogen atom in its ground state is illuminated with light having a wavelength of 96.7 nm. Compute the state and wavelength of any photon that would be emitted by the atom
A block is pushed up a frictionless incline by an applied horizontal force of 20 Newton. Find the magnitude of the resulting acceleration of the block
A force of 4.7N is required to stretch a certain spring by 1.4cm, How far must this spring be stretched for its potential energy to be 0.025J
At an altitude of 260 m above the Earth's surface, the field is only 105 N/C. Calculate the charge density of the air (assumed constant).
A raindrop of mass 3.35 x 10^-5 kilogram falls vertically at stable speed under the influence of gravity and air resistance. Model the drop as a particle. Find the work done on the raindrop by air resistance
The combination of an applied force and a friction force produces a constant total torque of35.3N · m on a wheel rotating about a fixed axis. Find the magnitude of the torque due to friction
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