Answer: the answer is B. 2.0
Explanation:
Answer:The speed of sound is greater in water than in air.
Explanation: The speed of a sound wave in a medium depends upon the density of the medium through which the sound is traveling. We know speed of a mechanical wave can be calculated as Frequency* Wavelength . Frequency does not change with the change of medium. It depends on the source frequency. But wavelength can be altered. As speed of sound is greater in water than in air and frequency remains the same, so wavelength should be increased to compensate the increase in speed of sound wave.
Answer:The mass of ball B is 10 kg.
Explanation;
Mass of ball A = ![M_A=5 kg](https://tex.z-dn.net/?f=M_A%3D5%20kg)
Velocity of the ball A before collision:![U_A=20 m/s](https://tex.z-dn.net/?f=U_A%3D20%20m%2Fs)
Velocity of ball A after collision=![V_A=10 m/s](https://tex.z-dn.net/?f=V_A%3D10%20m%2Fs)
Mass of ball B= ![M_B](https://tex.z-dn.net/?f=M_B)
Velocity of the ball B before collision:![U_B=10 m/s](https://tex.z-dn.net/?f=U_B%3D10%20m%2Fs)
Velocity of ball B after collision=![V_B=15 m/s](https://tex.z-dn.net/?f=V_B%3D15%20m%2Fs)
![M_AV_A+M_BV_B=M_AU_A+M_BU_B](https://tex.z-dn.net/?f=M_AV_A%2BM_BV_B%3DM_AU_A%2BM_BU_B)
![5 kg\times 10 m/s+M_B\times 15=5 kg\times 20m/s+M_B\times 10m/s](https://tex.z-dn.net/?f=5%20kg%5Ctimes%2010%20m%2Fs%2BM_B%5Ctimes%2015%3D5%20kg%5Ctimes%2020m%2Fs%2BM_B%5Ctimes%2010m%2Fs)
![M_B=10kg](https://tex.z-dn.net/?f=M_B%3D10kg)
The mass of ball B is 10 kg.
<span>It is option D, to increase the yield of the hydrazine one has to increase the hydrogen gas because it exceeds grams of nitrogen gas, this is done to balance the formation of hydrazine and then increase the amount of hydrogen and nitrogen. This is the change needed to perform that action.</span>
Answer:
1) F1
Explanation:
As the air resistant force depends on the speed of object and its orientation as it falls, it does not depend on the mass of the object. Therefore, air resistant force on 1 coffee filter is the same as the air resistant force on 3 coffee filters.