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Question: A wrought-iron bar 100 mm wide and 25 mm thick is placed between two steel bars, each 100 mm wide and 12 mm thick. If the bars act as a unit:
a. What stresses are produced by a pull of 450 kN applied to the combination?
b. What is the elongation due to the load if the member is 1.5 m Iong?
find the tension in the string
suppose a 29.9-kg child sits 1.27 m to the left of center on the same seesaw as the problem you just solved in the
The momentum of a 75-kg dart is 9.00 kg*m/s east. What is the velocity of the dart? As with all problems involving vectors, remember to include the direction in your answer.
A 18 kilo-ohm resistor is in series with a 75-mH inductor and an ac source. Evaluate what the impedance of the circuit if the source frequency is 70 Hertz. Evaluate what the impedance of the circuit
The power of sunlight reaching each square meter of the Earth's surface on a clear day in the tropics is close to 1 000 W. On a winter day in Manitoba, the power concentration of sunlight can be 100 W/m2. Find the power per unit area used by the ca..
A vertical electric field of magnitude 2.45 x 104 N/C exists above the Earth's surface on a day when a thunderstorm is brewing. Determine the electric flux through the bottom of the car
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A solid uniform ball with a mass of 125 g is rolling without slipping along the horizontal surface of a table with a speed of 4.5 m/s when it rolls off the edge and falls towards the floor, 1.1 m below. What is the rotational kinetic energy of the..
What is the average density, in kilograms per cubic meter, of the full gas can, taking into account the volume occupied by steel as well as by gasoline?
Water is discharged from a large pump and travels at an average velocity of 48 ft/sec. What is the kinetic energy of each lbm of water leaving the pump
sheena can row a boat at 2.95 mih in still water. she needs to cross a river that is 1.17 mi wide with a current
A length of aluminum wire has a resistance of 10.0 ? at 32.0°C. When the wire is warmed in an oven and reaches thermal equilibrium, the resistance of the wire increases to 26.2 ?. find the temperature of the oven
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