Blank 1- A- Social
Blank 2- C- environmental
Answer:
Explanation:
——»To measure centimeters, we can use ruler.
- Use a ruler with the side marked either cm or mm. Align the edge of the object with the first centimeter line on the ruler, then find the length in whole centimeters, or the larger numbers on the ruler.
Answer:
Mass of the wooden Block is 20g.
Explanation:
The buoyant force equation will be used here
Buoyant Force= ρ*g*1/2V Here density used is of water
m*g= ρ*g*1/2V
Simplifying the above equation
2m= ρ*V Eq-1
Also we know from the question that
ρ*V = m + 0.020 Eq-2 ( Density = (Mass+20g)/Volume )
Equating Eq-1 & Eq-2 we get
2m = m+0.020
m = 0.020kg
m = 20g
Answer: F =3.218 * 10^-11 N
Explanation: The relationship between electric field intensity and force is given by
F = Eq.
F= Force on electron
E = strength of electric field = 2*10^5
q= magnitude of proton charge = 1.609 * 10^-19c
F = 2* 10^5 * 1 609 * 10^-16
F = 3.218 * 10^-11 N
