A water pump draws about 4.4 A when connected to 240 V. What is the cost (with electrical energy at 9 cents per kWh) of running the pump for 10 h?
a. 82 cents
c. 95 cents
b. 8.0 cents
d. 15 cents
C
Physics & Space Science
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Which of the following applications is not suitable for a titanium alloy?
(a) Human body implants (b) Parts in saltwater, such as a ship propeller (c) high strength low weight parts (d) a gas turbine part at 700°C (1292°F)
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_____ is pulverized rock scattered by meteorite impacts on a planetary surface
A) Ejecta B) A magma ocean C) The Maxwell Montes D) Permafrost
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Scientists have confirmed that the particles of Saturn's rings are not ____
a. held by Saturn's moons b. within the Roche limit c. chunks of ice d. ancient e. primordial
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A cordless phone operates at 900 MHz. What is the associated wavelength?
What will be an ideal response?
Physics & Space Science