What are the dimensions of a closed rectangular box that has a square cross section, a capacity of 150 in.3, and is constructed using the least amount of material?

In the figure below, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 8.50 cm. Each wire carries 18.0 A, and all the currents are out of the page. What is the net magnetic force per meter of wire length on wire 1?

Water flows at a speed of 1.7m/s through a horizontal pipe having a circular cross section 5 cm in diameter. The pipe widens to a diameter of 14cm. Treat the water as an idea fluid. (A) What is the speed with which the water flows through the wider section of the pipe? (B) What is the...

A length of copper wire carries a current of 15 A, uniformly distributed through its cross section. The wire diameter is 2.5 mm, and its resistance per unit length is 3.5ohms/km. Calculate the energy density of the electric field at the surface of the wire.

In the F2 generation of a cross of DD RR with dd rr, the most common genotype would be

A cross of black chicken (BB) with a white chicken (WW) produces all speckled offspring (BBWW). This type of inheritance is known as