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Pressure, Temperature, Electricity, and Magnetism
Please respond to the following:
· Read the article titled "Aging US Power Grid Blacks Out More Than Any Other Developed Nation" under the Smart Grid terms section of the Science Corner. You can also view the article at https://www.ibtimes.com/aging-us-power-grid-blacks-out-more-any-other-developed-nation-1631086. Next, assess the efficiency of the current state of the national electric grid in the United States. Then, describe the key challenges in updating this grid to a so-called "smart grid".
· Read the article titled "Earth's Inconstant Magnetic Field" under the Earth's Magnetic Field terms section of the Science Corner. You can also view the article at https://www.nasa.gov/vision/earth/lookingatearth/29dec_magneticfield.html. Next, summarize the main reasons why the researchers stated that "our planet's magnetic field is in a constant state of change". Then, discuss the overall manner in which a magnetic reversal might impact human activities on Earth. Include one (1) example of such impact to support your response.
· Demonstrate an instance of static charge such as seen with examples #32 and 33 shown on page 209 of your textbook. Next, post a picture of your example then explain the method of charging you used as well as the charges displayed in each object.
a ball hung from a vertical spring oscillates in simple harmonic motion with an angular frequency of 2.6 rad/s, What is the maximum acceleration of the ball
An engine has a hot reservoir temperature of 969 K and a cold reservoir temperature of 602 K. The engine operates at two-fifths maximum efficiency. What is the efficiency of the engine?
a youngs double-slit interference experiment gives bright fringes separated by 30.5 cm on a screen when the experiment
(a) the study used a matched pairs design instead of a completely randomized design. (b) results from students may not generalize to the older and richer customers who might buy a Mercedes.
In the overhead view of Fig. 9-54, a 300 g ball with a speed v of 6.0 m/s strikes a wall at an angle ? of 30°, determine the impulse on the ball from the wall
A 0.200 kg ball is released fromrest at the top of a 100.0 m tallbuilding. Find the de Broglie wavelength of the ball just before itstrikes the Earth
The electron's magnetic moment is known as the "Bohr Magnetron" and has a theoretical value of ?B?eh4?m, where "h" is Planck's constant (h=6.63×10?34 J?s), Calculate the magnetic moment value of the Bohr Magnetron
Consider a stellar atmosphere (consisting entirely of atoms with an absorption cross-section of s) where the number density, n, is NOT constant. Let n be linear with respect to depth:
A 25,000-kg subway train initially traveling at 10.5 m/s slows to a stop in a station and then stays there long enough for its brakes to cool. The station's dimensions are 67.0 m long by 18.5 m wide by 12.5 m high.
Two bars of identical mass are at 34 °C. One is made from glass and the other from another substance. What is the specific heat capacity of the other substance
a person exerts force of 35n on the end of an door 88 cm wide, what is the magnitude of torque if the force is exerted perpendicular to the door
Imagine the flow of water through a pipe which has a radius of 10 cm. what is the approximate flow velocity at the center of the pipe
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