Answer:
160 m
Explanation:
distance covered in 1 s = 8 m
therefore, distance covered in 20 s = 8 * 20 m = 160 m
Answer:
No C. process of investigation that does not resemble science, but follows scientific methods.
Answer:
c) current
Explanation:
Ohm's law states that the current I flowing through a conductor of resistance R is directly proportional to the voltage or potential difference V applied across its terminals provided that the temperature and other necessary conditions remain constant.
Mathematically this law can be written as follows;
When we make R the subject of formula from equation (1), we get the following;
Answer:
10 kg
Explanation:
The mass of an object does not change even if the amount of gravtiy changes.
Explanation:
The given data is as follows.
Resistance (R) = 1200 ohm, Area (A) = m (as )
Diameter (d) = 2.3 mm = m
First, we will calculate the length as follows.
R =
Here, = resistivity of aluminium =
Putting the given values above and we will calculate the value of length as follows.
R =
1200 =
L =
As the circumference of circular wire =
or, =
=
And, number of turns will be calculated as follows.
No. of turns × Circumference = Length of wire
No. of turns ×
=
Thus, we can conclude that turns of wire are needed.