Q3
Which statement is true?
a. Geothermal power is generated from moving water.
b. Oil, a renewable resource, is processed to make jet fuel.
c. Wind power can turn turbines to generate electrical power.
d. Propane, a renewable resource, is used in some heating systems.
Q4
Which of the following best describes the use of a renewable resource?
a. Most power plants burn fossil fuels to generate electricity for use in homes and offices.
b. Natural gas is extracted from deep in the Earth and piped to customers to use for cooking.
c. Water falls through openings in a dam turning turbine blades that generate electricity.
d. We use gasoline to power our cars to get to work and school each day.
Answers: 2
Physics, 22.06.2019 09:30
Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy
Answers: 1
Physics, 22.06.2019 12:00
Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.
Answers: 1
Physics, 22.06.2019 14:10
Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:
Answers: 3
Q3
Which statement is true?
a. Geothermal power is generated from moving water.
b. Oil...
a. Geothermal power is generated from moving water.
b. Oil...
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