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The area of the piston to the master cylinder in a hydraulic braking system of a car is 0.7 square inches. If a force of 6.6 lb is applied to this piston, what is the force on the brake pad of one wheel if the area of the pad is 1.9 square inches? (Hint: Since the force on each of the four wheels would be the same, you only need to calculate the force on one.)
Orb spiders make silk with a typical diameter of 0.15 .A typical large orb spider has a mass of 0.50. If this spider suspends itself from a single 12-cm-long strand of silk, by how much will the silk stretch
A student is reading a lecture written on a blackboard. If the writing on the blackboard is 4.84 cm high, what is the height of the image on her retina
A solenoid 1.52 m long and 2.60 cm in diameter carries a current of 19.7 A. The magnitude of the magnetic field inside thesolenoid is 17.0 mT. Find the length ofthe wire forming the solenoid.
a metal block of mass 1.230kg is hanging from a string. the tension in the string is 7.184n. the block is submerged in
An athlete competing in long jump leaves the ground with a speed of 9.14 m/s at an angle of 35.0 ° above the horizontal
A plano convex lens is placed convex side down on a plane glass plate and illuminated from the above with red loght of wavelength of 625nm. what are the curvature and focal length of the convex surface of the lens
If the pion is made to travel at very high speed relative to a laboratory, its average lifetime is measured in the laboratory to be4.20×10-7s. Calculate the speed of the pion expressed as a fraction ofc.
Knowing that the angular velocity of the system is to be increased from 200 rpm to 800 rpm during a 3-s interval, determine the magnitude of the couple M that must be applied to disk A.
Two capacitors (C1=1.00 ?F and C2=2.00 ?F) are charged with Q1=3.00 ?C on the positive plate of capacitor 1 and Q2=3.00 ?C on the positive plate of capacitor 2, the total charge on the positive plate of capacitor 1
A piece of cork has a mass of 550 grams. An 18 N sinker is attached to it. With only the sinker in water, the cork and sinker weigh
An open rectangular tank is 2 m wide and 4 m long. The tank contains water to a depth of 2 m and oil (SG = 0.8) on top of the water to a depth of 1 m. Determine the magnitude and location of the resultant fluid force acting on one end of the tank.
a source emits a sound uniformly in all directions. a radial line is drawn from this source. on this line determine the
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