Answer:
Mechanical waves are defined by which of the following?
C. All of the above
Since, mechanical waves are created when an energy source vibrates, and they carry energy from one place to another through a medium, this is the right option.
Mechanical waves need an energy source to produce them?
True because a mechanical wave needs an initial energy input.
A wave has a wavelength of 100 mm and a frequency of 6 Hz. What is its speed?
600 mm/s
Wave speed = wavelength X frequency
Wave speed = 100 X 6
Wave speed = 600 mm/s
Amplitude of a wave is?
B. How high the wave is from resting point
By definition of amplitude.
Answer:
Pluto is no longer considered a planet as a result of it's small size on the IAU scale.
Explanation:
Answer:
a.)
I.) Open system
II.) Closed system
b.)
The total momentum of the object and earth system stay the same as the object fall toward the earth
The kinetic energy of the object increases as the object falls toward the earth.
Explanation:
a.)
I.) The system containing only the object is an open system because of the influence of external forces and presence of matters. External forces in this scenario means gravitational force acting on the object. And air is the matter that has influence on the object.
II.) The system containing only the object and earth is a closed system. Because in a closed system, there are no external dissipative forces acting on it. Universe is a closed system. And the mechanical energy of a close system is conserved. The mechanical energy will remain constant. In other words, it will not change (become more or less). This is called the Law of Conservation of Mechanical Energy.
b.) The total momentum of the object and earth system stay the same as the object fall toward the earth. Because momentum will always be conserved.
The kinetic energy of the object increases as the object falls toward the earth. When the object was initially at rest, kinetic energy equals zero
<span>A temperature measuring device should be placed in the "warmest" area of the refrigerated holding unit. The reason for this is because all foods must be stored in the minimum temperature required. If not stored properly the foods become hazardous. It is important to place the thermometer in the accurate location in reference to this question it is in the warmest location. The reasoning behind this is that if placed in the coldest location it may not represent an accurate temperature based on the entire unit.</span>
A binomial nomenclature, more commonly referred to as a scientific name.
