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When a person inhales, air moves down the bronchus (windpipe) at 15 cm/s. The average flow speed of the air doubles through a constriction in the bronchus. Assuming incompressible flow, determine the pressure drop in the constriction in pa
A helium-neon laser (λ = 632.8 nm) is used to calibrate a diffraction grating. find the spacing between adjacent grooves in the grating
The mass m =1 kg is set up as a pendulum of length 0.6m as shown on the diagram. Initially in the position of h = 0.2m above the lowest point, and the pendulum is given initial speed of 1m/s. What is the largest mass M that might be temporarily lifte..
An air spaced parallel plate capacitor is connected to a 12 v battery. If a slab of pyrex glass is inserted between the plates filling the gap, find the new capacitance of the capacitor
Along a straight road through town, there are three speed-limit signs. They occur in the following order: 54 , 35 , and 18 mi/h, with the 35 -mi/h sign located midway between the other two.
Megan's mass is 27 kg. She climbs the 4.8 m ladder of a slide and reaches a velocity of 3.6 m/s at the bottom of the slide. How much work was completed by friction on Megan? Imagine that air resistance is negligible.
A child sits still on a swing that is supported by two chains. Each chain makes a 15.0° angle with the vertical. The child's mass is 25.0 kg. What is the tension in each chain? (Ignore the mass of the seat and chains.)
A dynamite blast at a quarry launches a rock straight upward, and 2.3 s later it is rising at a rate of 18 m/s, calculate blast speed at launch
The intensity of sunlight that reaches Jupiter (orbiting at about 5 AU) is approximately what fraction of that at Earths orbital distance.
A blimp used for aerial camera views of sporting events holds 200,000 ft3 of helium. How much does the helium weigh
A 0.70 × 103 kg sports car collides into the rear end of a 2.2 × 103 kg SUV stopped at a red light. calculates the speed of the sports car at impact
A 3.1 kg block of copper at a temperature of 72 C is dropped into a bucket containing a mixture of ice and water whose total mass is 1.2 kg. How much ice was in the bucket
A satellite has a mass of 5555 kg and is in a circular orbit 4.20 105 m above the surface of a planet. What would be the true weight of the satellite if it were at rest on the planet's surface
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