Which of the following is "invalid" assignment? name (x) < - c ("New York", "Seattle", "Los Angeles") names (x) < - c ("New York", "Seattle", "Los Angeles") x < - list ("Los Angeles" = 1, Boston = 2, London = 3)

A certain metal has a resistivity of 1.68 * 10-8 Ω ∙ m. You have a long spool of wire made from this metal. If this wire has a diameter of 0.15 mm, how long should you cut a segment so its resistance will be 15 Ω?

Does the location of a millimeter change the voltage or current of the circuit?

If 6 men or 8 women can finish a work in 12 days, 9 men and 12 women will finish the work nearly?

Calibrations on a recent version of an operating system showed that on the client side, there is a delay of at least 0.5 ms for a packet to get from an application to the network interface and a delay of 1.

Technician A says that excessive end play causes rapid wear of the sealing rings and possibly the sealing ring groove. Technician B says that seal does not rotate in the groove; therefore, the groove could not wear. Which technician is correct

16 Suppose that a steel of eutectoid composition is cooled to 550°C (1020°F) from 760°C (1400°F) in less than 0.5 s and held at this temperature.

The rotor in a shaded pole motor consists of A coils energized by alternating current B a short circuited loop of copper wire c a permanent magnet D an iron cylinder

What factors are likely to promote the formation of stress corrosion cracks?

Find the mass if the force is 18 N and the acceleration is 2 m/s2

Which process must first take place in order for the proteins in foods to be used by body cells? (1) digestion (3) synthesis (2) storage (4) excretion