Blog

A high-voltage powerline operates at 500 000-V rms and carries an rms current of 500 A. If the resistance of the cable is 0.050 Ω/km, what is the resistive power loss in 200 km of the powerline? Report your answer in MW (mega watts).

A long solenoid (radius = 3.0 cm, 2 500 turns per meter) carries a current given by I = 0.30 sin(200πt) A, where t is measured in s. When t = 5.0 ms, what is the magnitude of the induced electric field at a point which is 2.0 cm from the axis of the solenoid?  Express your answer in mV/m (millivolt per meter)(Hint: be careful which radius you use to calculate the time derivative of the magnetic flux)

Which of the four cases are best explained by state-centered factors? Why?

Which of the following political leaders was assassinated in the 1960s?

A comparison of the effects of exercise in water, on land, or combined on the rehabilitation outcome of patients with ACL reconstructions revealed that less joint effusion was noted after 8 weeks in the water group only. The three intervention groups were compared to a control group for the outcome of joint effusion measured by girth measurement. What can you infer from the results table below?

Factor the following completely:

When consumers have less time, they tend to:

Internal search relies on a consumer’s memory and past experiences.

A shopper requires a product to meet minimum standards on all important attributes. Which rule is this?

The conjunctive rule eliminates any option that fails even one minimum requirement.