False, the wavelength decreases as the frequency increases
Answer:
こんにちは、これを読んでいただきありがとうございます。私は英語が話せないのであなたの質問には答えられないと言いたかっただけです。ごめんなさい。
The thermal energy of an object is defined as the total translational kinetic energy of the particles that make it up.
The answer is B.
Answer: The right answer is c.
Explanation:
The kinetic energy is defined as follows:
K = 1/2 mv²
If both cars are identical, this means that they have the same mass.
Also, we are told that the speed is also the same for both cars.
If they are going in opposite directions, their velocities have the same magnitude, but opposite signs.
But even though they have different signs, the square (which is the parameter relevant for kinetic energy calculations), is always positive, as any number, elevated to an even power, is positive.
So, we conclude that both cars have the same kinetic energy, in magnitude and in sign.
Answer:
The floor of the ocean is 6120 m deep.
Explanation:
In order to find the depth of the ocean we need to use the speed of the ultrasonic sound 1530 m/s and the time it takes for the echo to comeback. Since the wave is transmitted by the vessel goes to the bottom of the ocean and comeback, it travels the distance between the vessel and the floor two times, so we can divide the time by two. We then have:
D = V*t/2 = 1530*8/2 = 1530*4 = 6120 m
