It is required to lift the engine piston of a 200kg mass boat vertically using two concurrent cables at one point on the piston. One of the cables makes an angle of 30 ° with the vertical. a) Find the direction of the second wire so that the tension is minimal. b) Find the value of the stress. Se requiere izar verticalmete el pistón del motor de un barco de 200kg de masa utilizando dos cables concurrentes en un punto sobre el pistón. Uno de los cables forma un ángulo de 30° con la vertical. a) Halle la dirección del segundo cable de modo que la tensión sea mínima. b) Halle el valor de la tensión.

Which type of wave can travel without a medium

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?

The second largest public utility in the nation is the sole provider of electricity in 32 counties of southern florida. to meet the monthly demand for electricity in these counties, which is given by the inverse demand function p = 1,200 – 4q, the utility company has set up two electric generating facilities: q1 kilowatts are produced at facility 1, and q2 kilowatts are produced at facility 2 (so q = q1 + q2). the costs of producing electricity at each facility are given by c1(q1) = 8,000 + 6q12 and c2(q2) = 6,000 + 3q22, respectively. determine the profit-maximizing amounts of electricity to produce at the two facilities, the optimal price, and the utility company’s profit