Answer:
28,800m/p second
Explanation:
Calculate the distance per second so, 400m/50 s= 8m/p second now knowing the speed/hour and knowing an hour has 3,600 seconds,multiply it by 8 then you will get 28,800m/p second, or 28.8km/h
Answer:
2.3 newtons of force
Explanation:
Divide the weight by the speed of the bike
U7g19xuih;8weoxhwe8ou1whuowxhw
So, the frequency of that light approximately 
<h3>Introduction</h3>
Hi ! Here I will help you to discuss the relationship between frequency and wavelength, with the velocity constant of electromagnetic waves in a vacuum. We all know that regardless of the type of electromagnetic wave, it will have the same velocity as the speed of light (light is part of electromagnetic wave too), which is 300,000 km/s or
m/s. As a result of this constant property, <u>the shorter the wavelength, the greater the value of the electromagnetic wave frequency</u>. This relationship can also be expressed in this equation:

With the following condition :
- c = the constant of the speed of light in a vacuum ≈
m/s
= wavelength (m)- f = electromagnetic wave frequency (Hz)
<h3>Problem Solving</h3>
We know that :
- c = the constant of the speed of light in a vacuum ≈
m/s
= wavelength =
m.
What was asked :
- f = electromagnetic wave frequency = ... Hz
Step by step :






<h3>Conclusion :</h3>
So, the frequency of that light approximately 
<h3>See More :</h3>
Answer:
F= 224 N
Explanation:
Given that
mass ,m = 80 kg
Radius ,r= 5 m
speed at the top v= 8 m/s
The force at the top = F
Now by using the Second law of Newton's

Now by putting the values

Take g = 10 m/s²

F= 224 N
Therefore the force exerted by the track at the top position will be 224 N.