Answer:
Because the energy is waning
Explanation: hope this helps
Answer: 1037 miles per hour
Explanation: In order to see the sun in the same position in the sky, you would have to travel against the speed of rotation of the earth, because this is what causes the sun to appear in a constantly changing position.
Because of this, we will have to calculate the speed of rotation of the earth. To get started, we must know the circumference of the earth. Assuming the circumference formula for a sphere,
![Circumference=2\pi R](https://tex.z-dn.net/?f=Circumference%3D2%5Cpi%20R)
Where R is the radius of the earth, we find that the perimeter of the earth is approximately 24881 miles. The equation to calculate speed is given by
![v=\frac{Distance}{Time}](https://tex.z-dn.net/?f=v%3D%5Cfrac%7BDistance%7D%7BTime%7D)
Because the earth completes one rotation in 24 hours, we have to find the speed of rotation as the perimeter of the earth divided by 24 hours.
The obtained result is 1037 miles per hour.
You would have to travel at 1037 miles per hour in the direction opposite to the direction the rotation is ocurring in.
Daniddmelo says it right there, don't know why he got reported.
The potential energy (PE) is mass x height x gravity. So it would be 25 kg x 4 m x 9.8 = 980 joules. The child starts out with 980 joules of potential energy. The kinetic energy (KE) is (1/2) x mass x velocity squared. KE = (1/2) x 25 kg x 5 m/s2 = 312.5 joules. So he ends with 312.5 joules of kinetic energy. The Energy lost to friction = PE - KE. 980- 312.5 = 667.5 joules of energy lost to friction.
Please don't just copy and paste, and thank you Dan cause you practically did it I just... elaborated more? I dunno.
Answer:
Explanation:
The momentum of the 25 kg mass is
![p=mv](https://tex.z-dn.net/?f=p%3Dmv)
![p=25kg*3m/s= 75kg*m/s](https://tex.z-dn.net/?f=p%3D25kg%2A3m%2Fs%3D%2075kg%2Am%2Fs)
If this whole momentum of the object is transferred to the 5.0 kg object then according to the law of conservation of momentum, the momentum of the 25.0 kg object must be transferred to the 5.0 kg object:
![75kg*m/s = 5.0kg*v](https://tex.z-dn.net/?f=75kg%2Am%2Fs%20%3D%205.0kg%2Av)
![v=\dfrac{75}{5}](https://tex.z-dn.net/?f=v%3D%5Cdfrac%7B75%7D%7B5%7D)
![\boxed{v=15m/s}](https://tex.z-dn.net/?f=%5Cboxed%7Bv%3D15m%2Fs%7D)
Answer:
440hz
Explanation:
saxophone a plays at 430hz and a frequency of 5 beats per second can be heard so saxophone b is playing at a frequency 10hz louder than saxophone A making it 440hz