Civil and Environmental Engineering Answers

A conical tank is full of water is 16 feet across the top and 12 feet deep. Find the work required to pump all the water to a point 2 feet above the top of the vessel.

a water tank in the shape of a right circular cone has an altitude of 15 feet and a base radius of 10 feet. If the tank is full of water, find the work done in pumping all the water over the top of the tank.

A spring has a natural length of 8 inches. If a force of 20 lb. stretches the spring 0.5 inches, find the work done in stretching from 8 inches to 11 inches.

Calculate the resistance of copper wire with a diameter of 2.5968 mm having a length of 1000 m at 20°C.

An aluminum wire of diameter D and length L has a resistance of 1.5 Ω. Find the length of another aluminum wire at the same temperature if its diameter is 2D and its resistance is 6 Ω.

A wire 50 cm long and 1 mm in radius is connected to a battery 9.11 V with a current of 36 A. Taking the temperature at 20°C and using the table of resistivities for some materials above, determine the material of the wire.

Calculate the energy stored for the series-parallel combination shown in figure 3 if C1 = 2 µF, C2 = 3 µF, C3 = 4 µF, C4 = 6 µF, and C5 = 8 µF and the charge to a potential difference of 2600 V.

Three capacitors 2 μF, 6 μF, and 24 μF are connected in parallel to battery of 240 V. Calculate the capacitance of the combination and the charge on each capacitor.

Two point charges, +0.4 μc and +6.16 μc, are 20 cm apart in air. Calculate the potential energy and the work required to bring them to a distance of 10 cm from each other.

Calculate the work required to bring a charge of 5.0 static from a point 24 cm from a charge of 60 static to a point 3 cm from it.