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as observed on earth a certain type of bacterium is known to double in number every 6 hours two cultures of these
a physics book slides off a horizontal tabletop with a speed of 230 ms it strikes the floor in 0350 s ignore air
a 11 kg box must be slid across the floor if the coefficient of static friction between the box and floor is 037 what
a certain centrifuge produces a centripetal acceleration of magnitude exactly 1220g at a point 117 cm from the axis of
you throw a ball straight down from an apartment balcony to the ground below the ball has an initial velocity of 495 ms
a paratrooper is initially falling downward at a speed of 330 ms before her parachute opens when it opens she
a boy exploring a cave drops a rock into a dark crevasse he hears the rock strike the bottom 101 s after dropping it
a 63 kg astronaut floating at rest in space outside a space capsule throws his 050 kg hammer such that it moves with a
a m 26 kg object moving at v 16 ms collides with a stationary 20 kg object as shown in fig 638 if the collision is
assuming that a spacecraft lands on an asteroid and bores a hole perpendicular to its surface it is noticed that the
estimate the number of drops of water in all the oceans on earth you will need to use the facts that the oceans cover
a military helicopter on a training mission is flying horizontally at a speed of 600 ms and accidentally drops a bomb
in a particular region of the earths atmosphere the electric field above the earths surface has been measured to be 155
a 150- c charge is placed at the center of a cube of sides 310 cm determine the electric flux through each of the
a level pipe contains a nonviscous incompressible fluid with a density 1200 kgm3 that is flowing steadily at one
600 mole of nitrogen n2 gas and 600 mole of argon ar gas are in separate equal-sized insulated containers at the same
estimate how much power is saved if the voltage is stepped up from 240 v to 1200 v and then down again rather than
an 77 box of oranges is being pushed across a horizontal floor as it moves it is slowing at a constant rate of 090 each
while a roofer is working on a roof that slants at 420 degrees above the horizontal he accidentally nudges his 930 n
a 730- boulder is raised from a quarry 149 deep by a long uniform chain having a mass of 600 this chain is of uniform
a 1140- car is held in place by a light cable on a very smooth frictionless ramp as shown in the figure the cable makes
1 how much heat does it take to bring a 34 rm kg iron skillet from 20 rm circ c to 130 rm circ c2 if the heat is
by analyzing a multiflash photograph of a golfer hitting a golf ball one finds that the head of the club travels 470 cm
you bring a 200 rm g wrench into the house from your car the house is 16rm circ c warmer than the car and it takes 240
the fastest land animal is the cheetah which runs at a constant speed of 101 kmhr the second fastest is the antelope