Answer the following question given this paragraph: Two important devices depend on electromagnetic induction: electric generators and electric transformers. Both devices play critical roles in producing and regulating the electric current we depend on in our daily lives. Electric generators use electromagnetic induction to change kinetic energy to electrical energy. They produce electricity in power plants. Electric transformers use electromagnetic induction to change the voltage of electric current. Some transformers increase voltage and other decrease voltage. Q: What type of generators use electromagnetic induction to change kinetic energy to electrical energy? Choices: - conductors - radiators - thermal generators - electric generators A:
electric generators
Answer the following question given this paragraph: The variable is the speed of light. For the relationship to hold mathematically, if the speed of light is used in m/s, the wavelength must be in meters and the frequency in Hertz. Q: The variable is the speed of light. for the relationship to hold mathematically, if the speed of light is used in m/s, the wavelength must be in meters and the frequency in what? Choices: - gigawatts - miles - centimeters - hertz A:
hertz
Q: Answer the following question given this paragraph: Starch is a large, complex carbohydrate made of thousands of glucose units (monomers) joined together. Starches are found in foods such as vegetables and grains. Starches are broken down by the body into sugars that provide energy. Breads and pasta are good sources of complex carbohydrates. Q: Starch is a large, complex carbohydrate made of thousands of _____ joined together? Choices: - glucose partitions ( monomers ) - glucose orders ( monomers ) - glucose divisions ( monomers ) - glucose units (monomers) A:
A: glucose units (monomers)
Question: Answer the following question given this paragraph: Maritime air may become stuck on the windward side of a mountain range. For this reason it is unable to bring cooler air farther inland. Q: What type of air may get stuck on the windward side of a mountain range? Choices: - brisk air - live air - steady air - maritime air A:
Answer: maritime air
*Question*
Answer the following question given this paragraph: There is a pressure difference when the channel narrows. This pressure difference results in a net force on the fluid: recall that pressure times area equals force. The net work done increases the fluid's kinetic energy. As a result, the pressure will drop in a rapidly-moving fluid, whether or not the fluid is confined to a tube. There are a number of common examples of pressure dropping in rapidly-moving fluids. Shower curtains have a disagreeable habit of bulging into the shower stall when the shower is on. The high-velocity stream of water and air creates a region of lower pressure inside the shower, and standard atmospheric pressure on the other side. The pressure difference results in a net force inward pushing the curtain in. You may also have noticed that when passing a truck on the highway, your car tends to veer toward it. The reason is the samethe high velocity of the air between the car and the truck creates a region of lower pressure, and the vehicles are pushed together by greater pressure on the outside. (See Figure 12.4. ) This effect was observed as far back as the mid-1800s, when it was found that trains passing in opposite directions tipped precariously toward one another. Q: What is pressure times area equal to? Choices: - volume - mass - density - force A:
**Answer**
force
Q: Answer the following question given this paragraph: The speed of a wave is a product of its wavelength and frequency. Because the speed of electromagnetic waves through space is constant, the wavelength or frequency of an electromagnetic wave can be calculated if the other value is known. Q: The speed of a wave is a product of its wavelength and what else? Choices: - voltage - density - magnitude - frequency A:
A: frequency