The factors that would help identify a biome are climate, the plants and animals living there, the country where it is located and the amount of rainfall received. Biome is a very large ecological area on the surface of the Earth with animals and plants adapting to their environment.
Answer:
(a) Ball with 6.35 rev/sec gives greater speed
(b) So centripetal acceleration of ball with rotation 8.16 m/sec
So centripetal acceleration of ball with rotation 6.35 m/sec
Explanation:
(a) In first case angular speed 
rev/sec and length of the chain = 0.8 m
So velocity 
In second case angular speed angular speed 
and length of the chain that is r = 0.6 m
So velocity 
So 6.35 rev/sec gives greater speed
(b) Centripetal acceleration is given by 
So centripetal acceleration of ball with rotation 8.16 m/sec
So centripetal acceleration of ball with rotation 6.35 m/sec
To find the radial velocity of the object we are going to apply the regular Doppler formula:
[measured wavelenght - rest wavelenght/ rest wavelenght] = V/C, where V is the radial velocity and C is the speed of light which is equal to 300,000km/sec.
[400 - 800/800] = V/300,000 = - 150,000.
This means that the object is moving at a velocity of 150,000km/sec toward the observer.
The minus sign infront of the answer indicates that the object is moving towards the observer while a positive value will indicate that the object is moving away from the observer.
Answer:
sorry but I only know the first one ≧∇≦≧∇≦
Sound travels at approximately 1,100 feet per second (766 miles per hour). Radio waves travel at the speed of light, which is approximately 186,000 miles per second. This means that in the time radio waves travel the length of a football field, light can travel further than all the way around the world.
