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If a scuba diver descends also quickly into the sea, the internal pressure on all eardrum remains at atmospheric pressure while the external pressure increases due to the increased water depth. At sufficient depths, the dissimilarity between the external and internal pressures can rupture an eardrum. Eardrums can rupture when the pressure dissimilarity is as little as 35 kPa. What is the depth at which this pressure dissimilarity could occur? The density of seawater is 1025 kg/m3.
An electric field of 8.60 x 107 V/m is desired between two parallel plates, each of area 35.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate.
Batteries are rated in terms of ampere-hours (A h). For example, a battery that can produce the current of 3.00 A for 5.00 h is rated at 15.00 A h. What is the total energy stored in an 8.0-V battery rated at 49.0 A h.
A block lies on a horizontal frictionless surface and isattached to the free end of a spring, with a spring constant of 60N/m. What is the position of the block
a 4.50 x 102 kg hot-air balloon takes off from rest at the surface of the earth. the nonconservative wind and lift
a string of linear density 1.60gm is stretched between clamps 48.0cm apart. the string does not stretch appreciably as
a brass cylindrical bar at 300 k has a diameter of exactly 34 mm. an aluminum ring has an inner diameter which is
an ion enters a mass spectrometer which has a .21 t field perpindicular to electric field of 1.5 kvm and selects a
A 2 kg gun imparts a speed of 500 m/s to a 25 g bullet. what average force is exerted on the shooter's shoulder
question according to the national health survey the heights of adult males in the united states are normally
In Rutherford’sfamous scattering experiment that led to the planetary model of theatom, alpha particles (having a charge of + 2e and a mass of 6.64 x10-27 kg) were fired toward a gold nucleus with charge of + 79e. Thealpha particle, initially very..
In outer space, a baseball of mass m = 0.140 kg travels at velocity vi = (2.00 m/sec, 5.00 m/sec, 0); let the z-axis be up out of the plane of paper. calculate the average interaction force on the stick
a container of volume 110-5 cm3 holds three molecules of gas b which we label b1 b2 and b3. in 1 second there are two
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