Answer:
<u>a transverse wave consisting of changing electric fields and changing magnetic fields.</u>
Explanation:
An electromagnetic wave is a wave generated by the vibration of perpendicular electric and magnetic fields, which may progate through vacuum (empty space) or a material medium.
All electromagnetic waves propagate at the same speed in vacuum. This speed is approximately 3.0 × 10⁸ m/s. Which is generally referred as the speed of light, but it is the same constant speed of any electromagnetic wave in the vacuum, c.
In general, waves transfer energy when they travel, but only electromagnetic waves can travel in vacuum. The waves that cannot travel in vacuum are named mechanical waves (they need a medium to travel).
There are two types of waves depending on how they propagate: transverse waves and longitudinal waves. The transverse waves travel perperdiculary to the direcction of the vibration, while longitudinal waves travel parallel to the direction of the vibration.
The classical example of transverse waves is a rope that oscilates up and down. The classical example of longitudinal waves is a spring that you pull and push by an end and so it moves forward and back. Sound is also a longitudinal wave.
Answer:0.46
Explanation:
Given
Initial height ![h=50 m](https://tex.z-dn.net/?f=h%3D50%20m)
inclination ![\theta =10^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%20%3D10%5E%7B%5Ccirc%7D)
Thrust![=280 N](https://tex.z-dn.net/?f=%3D280%20N)
combined mass of kieran and skis ![m=50 kg](https://tex.z-dn.net/?f=m%3D50%20kg)
Speed at the bottom ![v=40 m/s](https://tex.z-dn.net/?f=v%3D40%20m%2Fs)
From Work Energy Theorem
Work done by all the force is equal to change in kinetic Energy
------------1
distance traveled along the slope ![x=\frac{50}{\sin 10}=287.93 m](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B50%7D%7B%5Csin%2010%7D%3D287.93%20m)
![W_{gravity}=mgh=50\times 9.8\times 50=24500 J](https://tex.z-dn.net/?f=W_%7Bgravity%7D%3Dmgh%3D50%5Ctimes%209.8%5Ctimes%2050%3D24500%20J)
![W_{thrust}=F\times x=280\times 287.93=80,620.4 J](https://tex.z-dn.net/?f=W_%7Bthrust%7D%3DF%5Ctimes%20x%3D280%5Ctimes%20287.93%3D80%2C620.4%20J)
![W_{friction}=-\mu mg\cos 10](https://tex.z-dn.net/?f=W_%7Bfriction%7D%3D-%5Cmu%20mg%5Ccos%2010)
substitute in 1
![24,500+80,620.4+W_{friction}=\frac{1}{2}\times 50\times 1600](https://tex.z-dn.net/?f=24%2C500%2B80%2C620.4%2BW_%7Bfriction%7D%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%2050%5Ctimes%201600)
![W_{friction}=40,000-24,500-80,620.4](https://tex.z-dn.net/?f=W_%7Bfriction%7D%3D40%2C000-24%2C500-80%2C620.4)
![-\mu \cdot 50\times 9.8\times 287.93=-65,120.4](https://tex.z-dn.net/?f=-%5Cmu%20%5Ccdot%2050%5Ctimes%209.8%5Ctimes%20287.93%3D-65%2C120.4)
![\mu =\frac{65,120.4}{141,085.7}=0.46](https://tex.z-dn.net/?f=%5Cmu%20%3D%5Cfrac%7B65%2C120.4%7D%7B141%2C085.7%7D%3D0.46)
Answer:
Rust is a compound. What makes iron rust is its reaction with oxygen and moisture in the air.
Hi there!
II. Linear momentum of the system is zero.
This is an example of a RECOIL collision. With the Law of Conservation of Momentum, momentum remains constant before and after the collision.
Thus, the total momentum would also be equivalent to zero after the collision.
Time and space are both relative