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A young male adult takes in about 4.46 x 10-4 m3 of fresh air during a normal breath. Fresh air contains approximately 21% oxygen. Assuming that the pressure in the lungs is 0.964 x 105 Pa and air is an ideal gas at a temperature of 310 K, find the number of oxygen molecules in a normal breath.
Blocks with masses of 4.0, 8.0, and 9.0 are lined up in a row on a frictionless table. All three are pushed forward by a 16 force applied to the 4.0 block. How much force does the 8.0 block exert on the 8.0 block.
find the speed and direction of a proton passing through the origin and where the magnetic fields are: B1=1.0x10^-13 (j hat) T at (x,y,z)= (1,0,0) in mm, B2= -1x10^-13 (i hat) at (0,1,0) in mm
A hydrogen atom initially in its ground state (n =1) absorbs a photon and ends up in the state for which n = 3. What is the energy of the absorbed photon
Find the von Mises stress (in MPa) at the location of the strain gages.
The disk would slide off the turntable if it is located at a radius larger than 16 cm from the axis of rotation. What is the coefficient of static friction.
A particle with a charge of 31?C moves with a speed of 72m/s in the positive x direction. The magnetic field in this region of space has a component of 0.38T in the positive y direction, what is the magnitude of the magnetic force on the particle
When a 5.5 cm long pencil is arranged perpendicular to a convex mirror's optical axis at a distance of 29 cm from the mirror, its image is 2.8 cm tall. (a) What is the mirror's focal length (include sign if negative)? (b) How tall is the pencil's ..
A 12.0-V battery produces 205mA when it's across a 47.5? load, Find the potential difference across the battery's terminals
The calorimeter is constructed of a material that has a specific heat of 0.10 cal/ g. ^{circ}C. When equilibrium is reached, what will be the final temperature.
A hoop of mass 1.9 kg and radius 55 cm has a string wrapped around its circumference and lies flat on a horizontal frictionless table. What is the angular velocity of the hoop about its center of mass after 2 s
You need to prepare a 0.187mm-diameter tungsten wire with a resistance of 3.43 ohm. How long must the wire be
A sound pulse has a power of 893.1 watts. It is radiating outwards from a point and at the time of observation is a radius of 7861.6 m from that point
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