3. Kinetic energy
4. Potential energy
5. Kinetic energy because it’s moving towards the waterfall otherwise there wouldn’t be a waterfall. 
6. Kinetic energy
7. Kinetic energy
8. Potential energy
9. Potential energy
10. Kinetic energy
        
             
        
        
        
Answer:
Rutherford described the atom as consisting of a tiny positive mass surrounded by a cloud of negative electrons. Bohr thought that electrons orbited the nucleus in quantised orbits. Bohr built upon Rutherford's model of the atom. ... So it was not possible for electrons to occupy just any energy level.
Explanation:
 
        
             
        
        
        
Answer:
Stage one of sleep, also known as the transitional phase, occurs when one finds themselves floating in and out of consciousness. During this NREM stage, you may be partially awake while your mind begins to drift off. This period of drowsiness eventually leads to a light sleep
Explanation:
i found it on google
 
        
             
        
        
        
Answer:
lowest frequency = 535.93 Hz
distance  between adjacent anti nodes is 4.25 cm
Explanation:
given data 
length L = 32 cm = 0.32 m
to find out
frequency and distance between adjacent anti nodes
solution
we consider here speed of sound through air at room temperature 20 degree is  approximately  v = 343 m/s
so
lowest frequency will be =  ..............1
   ..............1
put here value in equation 1 
lowest frequency will be =  
 
lowest frequency = 535.93 Hz
and
we have given highest frequency f = 4000Hz
so 
wavelength =   ..............2
   ..............2
put here value
wavelength =   
  
wavelength = 0.08575 m 
so distance =   ..............3
   ..............3
distance =   
  
distance = 0.0425 m
so distance  between adjacent anti nodes is 4.25 cm