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A steel wire has the following properties: Length = 5.50m Cross-sectional area = 5.00×10?2cm^2 Young's modulus = 2.00\times 10^11 Pa Shear modulus = 0.84\times 10^11 Pa Proportional limit = 3.60\times 10^8 Pa Breaking stress = 11.0\times 10^8 Pa The wire is fastened at its upper end and hangs vertically. How great a weight can be hung from the wire without exceeding the proportional limit? How much does the wire stretch under this load? What is the maximum weight that can be supported?
Y You own an 800 kg 4WD truck and you decide to go help a friend who got stuck on a steep snowy mountain road in his 400 kg Porche. What is the acceleration of each vehicle
suppose that we could use the energy released when 5 g of antimatter annihilates 5g of matter to lift a mass 3 km from the Earth's surface. how much mass can we lift? answer in unites of kg.
A speed skater moving across frictionless ice at 8.6 m/s hits a 5.5 m wide patch of rough ice. She slows steadily, What is her acceleration on the rough ice
What is the magnitude of the force on an electron that is in the region between the plates at a point accurately 2.52 mm from the positive plate
A 18.0-kg projectile is fired at an angle of 60.0° above the horizontal with a speed of 73.0 m/s. How much energy is released during the explosion
Two identical rods each of length L and charge Q are perpendicular to each other and separated by a distance D, Find the force between them
On a day when a thunderstorm is brewing, there could be a vertical electric field of magnitude of 2.00×104 N/C. Calculate the electric flux through the bottom of the car
After thermal equilibrium has been reached, the system has a change in temperature measured as 0.020 oC. explain the entering speed of the bullet.
Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, Find the time at which Kathy overtakes Stan
A 740 gram grinding wheel 21.5 cm in diameter is in the shape of a uniform solid disk. What torque does friction exert while the wheel is slowing down
A car of mass m traveling at speed v crashes into the rear of a truck of mass 2m that is at rest and in neutral at an intersection. what is the speed of the combined car and truck after the collision
a converging lens forms a real image 1.27 times the size of the object. The object distance is 22cm. Find the distance of the focal point from the center of the lens
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