Physics, 18.10.2019 10:30, emanuelmorales1515

# 1. a step-up transformer increases 15.7v to 110v. what is the current in the secondary as compared to the primary? assume 100 percent efficiency.2. an ideal step-down transformer has a primary coil of 400 turns and a secondary coil of 19 turns. it's primary coil is plugged into an outlet with 120v (ac), from which it draws an rms current of 0.51a. what is the voltage in the secondary coil?

Answers: 1

Physics, 22.06.2019 05:40, kkbrookly7496

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

Answers: 2

Physics, 22.06.2019 10:30, tay8556

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.

Answers: 1

Physics, 22.06.2019 12:00, louieknown

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

Answers: 1

Physics, 22.06.2019 12:50, natalyarenassalgado

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i. e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i. e. include the distance traveled to the first encounter)

Answers: 2

1. a step-up transformer increases 15.7v to 110v. what is the current in the secondary as compared t...

Mathematics, 24.10.2019 18:43

Mathematics, 24.10.2019 18:43

Mathematics, 24.10.2019 18:43

Mathematics, 24.10.2019 18:43

Mathematics, 24.10.2019 18:43