<h2>Answer:</h2>
The speed of the sound wave is 340 m/s. The correct option is C.
<h3>Explanation:</h3>
Here in question description the frequency and wave length is given and we have to find the velocity/speed of the sound wave.
Frequency is the time taken for the passage of one wave. Wavelength is the total length of crust and trough in meters.
The velocity is the product of frequency and wavelength.
V = λ ∙ f
By putting the values in given formula:
v = 100 Hz × 3.4 m = 340 m/s
Hence the speed of the wave is 340 m/s.
Well latent fingerprints are made of oil and sweat and generally materials that you can't see very easily, so it should be that.
Hope this helps :D
Answer:
what is the direction of the sum of these two vectors?
The gas is in a rigid container: this means that its volume remains constant. Therefore, we can use Gay-Lussac law, which states that for a gas at constant volume, the pressure is directly proportional to the temperature. The law can be written as follows:
Where P1=5 atm is the initial pressure, T1=254.5 K is the initial temperature, P2 is the new pressure and T2=101.8 K is the new temperature. Re-arranging the equation and using the data of the problem, we can find P2:
So, the new pressure is 2 atm.
Answer:
D
Explanation:
Ball A is a non positively charged non metal while ball B is metal ball.
Given: The ball B positive charge of small magnitude
To prove: Balls will attract each other
IN this condition because of induction negative charges on the sphere B move to the side closer to sphere A,(induction charging) while the positive charges move to the side further away from sphere A. The polarization of charge on B will cause a greater attractive force than the repulsion of the like charges.
Hence the correct answer will be D .
