Answer:
a) their amplitudes are the same their phase difference is constant their frequencies are the same
Explanation:
Coherent waves are the waves that have constant phase difference, equal frequency, amplitude and waveform.
Frequency denotes the number of cycles a wave completes in one second.
Amplitude is the maximum height that the wave reaches.
Waveform is the two dimensional representation of a wave in graphical form.
Answer:
MY friend has already described the purpose of projectile motion so I will quickly go through the uses of each equation ...
Explanation:
TIME OF FLIGHT = it is given as 2Usin tita/g...it is the total time taken to and fro...it is 2x of the time taken ....
TIME taken ..t= Usin tita / g.....is the time taken to reach the maximum height which is 1/2 the TOTALTIME OF FLIGHT GIVEN ABOVE ..
MAXIMUM HEIGHT: the maximum height is the height attained by the projectile when projected ...it is calculate using the formula = U^2 sin^2 tita / 2g
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An object launched into projectile motion will have an initial launch angle anywhere from 0 to 90 degrees. The range of an object, given the initial launch angle and initial velocity is found with: R=v2isin2θig R = v i 2 sin 2 θ i g .
Answer:
No
Explanation:
When one object heats another, the amount of heat transferred by the hotter object (
) to the colder object is equal to the amount of heat absorbed by the colder object (
):
The two amounts of heat can be written as:
where
is the mass of the hotter object
is the specific heat capacity of the hotter object
is the change in temperature of the hotter object
And
where
is the mass of the colder object
is the specific heat capacity of the colder object
is the change in temperature of the colder object
So we can write
or
We see that this ratio is not always equal to 1, since the two objects can have different masses and specific heat capacities: therefore, the changes in temperature are not equal.
Boiling points are raised by hydrogen bonds because they make different molecules desire to "attach" to one another, which requires more energy to do so. In water, for instance, the hydrogen proton is in a state that resembles ionization because the connections between oxygen and hydrogen, while covalent, are strongly polar. The oxygen also receives a partial negative charge. Therefore, hydrogen bonds are formed when the electro-positive H in one molecule is strongly electrostatically attracted to the electro-negative O in nearby molecules. Despite being weak links, they are powerful enough to significantly alter the liquid's characteristics.
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