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A person takes in a breath of 10!C air and holds it until it warms to 37.2!C. The air has an initial volume of 0.73 L and a mass of 0.00077 kg. Determine the work done by the air on the lungs if the pressure remains constant at 1 atm.
In Larry Niven's science-fiction novel Ringworld, a rigid ring of material rotates about a star. What is the apparent weight of an inhabitant of Ringworld relative to his weight on Earth
A soccer player kicks a ball toward a wall 15.0 m away, with velocity 25.0 m/s at 30.0 above the horizontal. Determine how high up the opposite wall the ball hits, and nd the impact velocity
How did Pavlov and Watson's focus on scientific inquiry of behaviours differ from earlier viewpoints of structuralisms, psychoanalysts, and functionalists.
An airplane has a mass of 1.8×10^6 kg , and the air flows past the lower surface of the wings at 94 m/s .f the wings have a surface area of 1300 m^2, how fast should the air flow over the upper surface of the wing if the plane is to stay in the ai..
A pitcher throws a curveball that reaches the catcher in 0.59 s, What is the angular displacement of the baseball (in radians) as it travels from the pitcher to the catcher
A 25 kg child on a 2.0 m swing is released from rest when the swing supports make the angle of 30.0 degrees with the vertical.
What is an average speed of this train
A parallel plate capacitor of capacitance 7.2 µF has the space between the plates filled with a slab of glass with ? = 3.5. Find the capacitance after the glass is removed
Three blocks of mass m1=1.0 kg, m2=2.0 kg, and unknown mass m3 are on a frictionless forizontal surface, What is the unknown mass m3
A skier, weighing 453 n, is skiing down a slope that has an incline of 29 degrees above the horizontal. Compute the acceleration of the skier (coefficient of kinetic friction between the skis and snow is 0.21)
Conisder the Earths magnetic field (53 uT) at a point near the equator where the field is horizontal, Calculate the velocity, V of this proton
A scaffold that weighs 275N supports two painters, one weighing 150N and the other weighing 325N, What should the reading on the right scale be
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