Answer:
6.86 N
Explanation:
Applying,
F = mg............... Equation 1
Where F = Force exerted by gravity on the mass, m = mass, g = acceleration due to gravity
Note: The Force exerted by gravity on the mass is thesame as the weight of the body.
From the question,
Given: m = 700 g = (700/1000) = 0.7 kg
Constant: g = 9.8 m/s²
Substitute these values into equation 1
F = 9.8(0.7)
F = 6.86 N
Answer:
500Km
Explanation:
This question is an example of speed, distance, time.
The formula for working out the distance is: 
To work this out you would need to multiply the speed of 200Km/h by the time of 2.5 hours, this gives you 500 Km. This is because the formula to work out the distance is speed * time.
In adittion, if the train is traveling at 200km per hour then that means that over the course of an hour the distance travelled would be 200Km. So, by multiplying the speed by the time you are working out how far it travelled in that given time.
1) Multiply 200 by 2.5.

Answer:
2000 pieces
Explanation:
The number of tiles is given by dividing the area of room by the area of each tile. In this case,
thw areas are as shown below
Area of room is 8*10= 80 m2
Converting dimensions of tiles from cm to m then
Area of tiles is 0.2*0.2= 0.04 m2
No of tiles is 80/0.04=2000 tiles
Answer:
The discharging current is
Explanation:
From the question we are told that
The radius of each circular plates is R
The displacement current is 
The radius of the central circular area is 
The discharging current is mathematically represented as

where A is the area of each plate which is mathematically represented as
and k is central circular area which is mathematically represented as
![k = \pi [\frac{R}{2} ]^2](https://tex.z-dn.net/?f=k%20%20%3D%20%20%5Cpi%20%5B%5Cfrac%7BR%7D%7B2%7D%20%5D%5E2)
So


substituting values

