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Suposse that a Ferrari and a Porsche begin a race with a moving start and each moves with constant speed. One lap of the track is 2 Kn. The f laps the P afetr the P has completed 9 laps. If the speed of teh F had been 10km'h les , the P would have travelled 18 laps before being overtaken. what were the sppeds of the two cars.
A thermodynamic system undergoes a process in which its internal energy decreases by 455 J. Find the energy transferred from it by heat
A 12.5-kg horizontal plank 4.00 m long rests on two supports, one at the left end and a second 1.00 m from the right end
The rod is held in the horizontal position shown and then released. Compute the initial acceleration of the mass attached to l1. Assume up is positive and down is negative
A pulley hanging off the side of a building supports a 0.57 kg bucket on a rope. The pulley releases rope as the bucket is lowered to the ground. What is the distance to ground
Four identical charges (+1.7 %u03BCC each) are brought from infinity, compute the electric potential energy of this group
A ball is placed on an edge of a cliff and it is kicked by a soccer player at 20.0 m/s at an angle of ? = 30? above the horizontal, Find the height of the cliff
If the final temperature of the system is 22.0?C, what is the mass m of the water that was initially at 80.0 ?C
A 310 kg weather rocket is loaded with 100 kg of fuel and fired straight up. It accelerates upward at 28.0 m/s2 for 32.0 s, and then runs out of fuel. Overlook any air resistance effects.
on a horizontal, frictionless table, an open-topped 5.30-kg box is attached to an ideal horizontal spring having force constant 360 N/m. Find the period of the resulting motion of the box
A 501g mass oscillates with an amplitude of 11.0cm on a spring whose spring constant is 23.0N/m, determine the period and max speed
If the cardiac output of a small dog is 4.05 x 10-3 m3/s, the radius of its aorta is 0.516 cm, determine the pressure drop across the aorta of the dog
Julie drives 100 mi to her Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 25mph and the other half at 80. On her return trip, she drives half time at 25mph and half the time at 80 mph.
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