You look at the units you want, then try to figure out which units ti multiply by to get the units you have to match the units you want. For example, if you want kg/m^3 and have m/s
You can see that you have a length/time(lets denote it d/t for distance over time) and want mass/volume (lets denote it m/d^3). d/t multiplied by time=d but we want m/d^3 so lets multiply our original d/t by time(t) and mass(m) so d/t(t) (m) =dm. However, we want m/d^3 so we will also have to divide by d^4.
(d/t)(t)(m) /(d^4)=m/d^3 = mass/length^3 =mass/volume which was what we wanted our end result to be.
Its D because i know that smoke does change very easily and its particles that dissolves in air which was infuenced by the gas. hope this helps man ;)
Answer:
a. Speed = 342.5 meters per seconds.
b. Wavelength = 2.0 meters
Explanation:
Given the following data;
Distance = 100m
Time = 292 milliseconds to seconds = 292/1000 = 0.292 seconds
Frequency = 171 Hz
a. To find the speed of sound in air;
Speed = distance/time
Speed = 100/0.292
Speed = 342.5 m/s
b. To find the wavelength;
Wavelength = speed/frequency
Wavelength = 342.5/171
Wavelength = 2.0 m
Answer:
With the development in technology scientists now have improved ways to predict future climates based on past data and past accuracy in such predictions. Researchers can predict future climates by entering past climate data into a computer program if it accurately provides current climate based on data from the past, then we can also predict future climate.
Explanation:
Climate Change is the different changes in the Earth's climate. These changes include changes in some Earth's climate such as temperature, precipitation, rising sea levels.
Over the years, the climate of the Earth continued to get worst, majorly due to the numerous activities of humans which has negatively affected Earth's climate. Some of the scientific research shows increased deforestation, the use of power plants, vehicles, and industries that still uses fossil fuels emit carbon dioxide which traps heat in the atmosphere, are some of the numerous activities of humans that have led to climate change. Using clean and renewable energy sources, preventing deforestation, are some of the ways to improve the climate.
Answer:
See answer
Explanation:
The area of the circular loop is given by:
The magnetic flux is given by:
is parallel to and is constant in magnitude and direction therefore:
Part A)
initially the flux is
after the interval
the flux is
now, the EMF is defined as:
,
if we consider very small then we can re-write it as:
then:
Part B)
When looked down from above, the current flows counter clockwise, according to the right hand rule, if you place your thumb upwards (the direction of the magnetic field) and close your fingers, then the current will flow in the direction of your fingers.