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What outward force is needed on the outside of a lung to create the pressure P noted in Figure 10.33, where P = -6.00 mm Hg? Take the area affected to be 320 cm2. (This force is easily created by the diaphragm and chest muscles, as we breathe many times a day.)
A snowboarder of mass 79 kg travels down the slope of height 150 m, what is the work done on her by friction
The ceiling of a classroom is 3.75 m above the floor. A student tosses an apple vertically upward, releasing it 0.50 m above the floor. What is the maximum initial speed that can be given to the apple
two stationary positive point charges charge 1 of magnitude 3.20nc and charge 2 of magnitude 1.50nc are separated by a
The robot HooRU is lost in space, floating around aimlessly, and radiates heat into the depths of the cosmos at the rate of 11.5 W. What is HooRU\'s temperature
A car of 1200 kg travels east at 24 m/s while a truck of 2200 kg travels north at 19 m/s They collide and stick together. a) What is the momentum in the system? b) What is the final velocity (magnitude and direction) after the collision?
A boy standing on a 15-m ledge throws a 0.2-kg rock horizontally at 10 m/s. How far does the rock travel horizontally before the rock strikes the ground? (let g = 10 m/s2)
A spherical balloon is made from a material whose mass is 3.00 kg. The thickness of the material is negligible compared to the 1.4-m radius of the balloon. Find the absolute pressure of the helium gas
The temperature of a 2.8 m copper pipe is raised from 46?C to 873?C. What is its change in length
A 6 m long 50 kg ladder leaning on a frictionless wall can successfully be scaled by a 120 kg man. What is the minimum angle between the ladder and the floor
q1. a sealed bottle has water in it and two tubes enter the bottle through the seal. tube b is attached to a pump at
A ball is kicked and when it leaves the persons foot it has avelocity for wich υ0x=4 m/sec and ν0y=3m/sec.Before begining this problem indicate coordinate system forx/y.
An oil droplet with 5 excess electrons is held stationary in a field of 2.53 × 104 N/C. Find what is the radius of the oil drop
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