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An interesting recent development is a growing awareness of bacteria. It's now realized that the total biomass of bacteria on earth far outweighs all animals, plants, and other complex living beings put together. A recent claim is that "there are 10 times as many bacterial cells in a typical human body as there are human cells." If we don't count blood and bone (about 20% of your mass) estimate the fraction of your mass that is bacterial and not "you".
question1calculate approximately the average power of a water wave when it hits chest of an adult standing in the water
question a wheel 33cm in diameter accelerates uniformly from 240 rpm to 360 rpm in 6.5s. how far will a point on the
A mine car (mass=490 kg) rolls at a speed of 0.50 m/s on a horizontal track, as the drawing shows. Determine the speed of the car-coal system
An object at rest explodes into three pieces. Two of them are equal in mass and break off at an angle of 88.7° to each other, both by a speed of 33.4 m/s. The last piece has 4 times as much mass as each of the other pieces. What is the magnitude of t..
Most asteroids are oblong in shape. Approximate an asteroid as being made up of two identical spheres of mass M and radius R that are just touching each other, in a figure eight
A cart of a mass 300 kg is pushed up a track at an angle of44 degrees from the bottom to a position that is 30m higher thanthe bottom in a time of 25 seconds. What is the velocity at the bottom
Calculate the impulse experienced when a 66 kg person lands on firm ground after jumping from a height of 2.8m. Estimate the average force exerted on the person's feet by the ground if the landing is with bent legs
identical 50uc charges are fixed on an x-axis at x -3.0 m. a particle of charge q-15uc is then released from rest at a
A 70-kg astronaut floating in space in a 110-kgMMU (manned maneuvering unit) experiences an acceleration of 0.029 m/s2 when he fires one of the MMU's thrusters. What is the thrust of the thruster
Evaluate what is the magnitude of the applied force T that is needed to start the suitcase moving? And once the suitcase is moving
a surveyor 100 m from a long straight 200 kv dc power line suspects that its magnetic field may equal that of the earth
Sand from a stationary hopper falls on a moving conveyor belt at the rate of 5.70 kg/s. Determine the force of friction exerted by belt on sand
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