13) Compare primary and secondary succession of an ecosystem. What is the distinction between them?

M&S Problem 2.47 (extended) An electric motor operating at steady state draws a current of 20 ap at a voltage of 110 V. The output shaft rotates at a constant speed of 2000 RPM and exerts a torque of 9.07 N-m.

What is the exposure of shakes double 18"

As we've seen, astronauts measure their mass by measuring the period of oscillation when sitting in a chair connected to a spring. the body mass measurement device on skylab, a 1970 s space station, had a spring constant of 606 n/m.

To determine the speed of a wave, you would use which of the following formulas? a. speed = frequency x amplitude b. speed = wavelength x frequency c. speed = wavelength x amplitude d.

A rod (length = 80 cm) with a rectangular cross section (1.5 mm * 2.0 mm) has a resistance of 0.20 Ω. What is the resistivity of the material used to make the rod?

For a vacation, you and your family fly east to west from Boston, Massachusetts, to Seattle, Washington. You notice that your flight back home to Boston is shorter than your flight to Seattle. Which phenomenon causes your flight home to be shorter?

You spy on an anchor on the bottom of a lake. What is the direction and amount of force the water exerts on it: a) zero b) up, equal to the weight of the anchor. c) up, less than the weight of the anchor d) down, equal to the weight of the anchor.

How are electromagnetic waves different from matter waves?

A dc generator is the same as a (n) a. electric motor. b. ac generator. c. armature. d. electric current.

Which of the following best describes scientific knowledge A.) Durable B.) Absolute and never changing C.) Frequently varies