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The human lungs can function satisfactorily up to a limit where the pressure difference between the inside and outside of the lungs is 1/21 of an atmosphere. If a diver uses a snorkel for breathing, find how far below the water can she swim? Suppose the diver is in salt water whose density is 1057 kg/m3.
a 1142 kg car pushes a 2019 kg truck that has a dead battery. when the driver steps on the accelerator the drive wheels
A 1.80 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 15.3 m/s. The vertical component of Earth's magnetic field in this region is 40.0 µT directed downward. Calculate the induced emf between th..
A cord of length 1.0m is fixed at both ends. Its mass per unit length is 1.2g/m and the tension is 11N. What is the frequency of fundamental oscillation
Consider a group of 20 molecules with the following speeds: three have speed 1 m/s, Determine the rms speed (in m/s) of the molecules in this group at this instant in time
A rescue helicopter lifts a 85 kg person straight up by means of a cable. How much work is done by the tension in the cable
A parallel-plate air-filled capacitor having area 50 cm2 and plate spacing 1.3 mm is charged to a potential difference of 710 V, find the energy density between the plates
A bowling ball of mass 7.5 kg and radius 9.0cm rolls without slipping 10 m down a lane at 4.3m/s. calculate the angular velocity of the bowling ball.
consider a 1000l cstr in which biomass is being produced with glucose as the substrate. the microbial system follows a
a horizontal force of 50 n is applied for 10 s on a box of mass 20kg placed on a friction-less horizontal table .
An airplane with a speed of 89.1 m/s is climbing upward at an angle of 31.5 ° with respect to the horizontal. Relative to the ground, determine the angle of the velocity vector of the package just before impact
What is force necessary on one end of apparatus in order to lift the car? How much work is done lifting the car?
A wave has the following properties: amplitude = 0.222 m, period = 0.593 s, wave speed = 16.1 m/s. The wave is traveling in the -x direction. What is the equation for the wave
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