Acceleration is constant in free fall. So it would again be 9.8 m/s².
The density of the substance is obtained by dividing its mass by its volume. Density is an intensive property which means that its value does not depend on the amount of substance and will always stay the same for same conditions.
d = 84.7 g / 46.7 cm³ = 7.75 g / x cm³
The value of x is approximately 4.27 cm³.
<h2>
a) Equivalent resistance is 143 Ω</h2><h2>
b) Potential difference is 71.5 V</h2>
Explanation:
When resistors are connected in series, effective resistance is given by
Here
R₁ = 21Ω
R₂ = 58Ω
R₃ = 64Ω
a)
Equivalent resistance is 143 Ω
b) We know
Potential difference = Current x Resistance
V = IR
I = 0.5 A
R = 143Ω
Substituting
V = 0.5 x 143 = 71.5 V
Potential difference is 71.5 V
Answer:
F=ma
So we have to find acceleration
V^2-U^2=2as
V=0 ,U=10m/s ,s= 50m
(0)^2-(10)^2=2*50*a
0-100=100*a
-100=100*a
-100/100=a
-1=a
F=ma
F=1000*-1
F= -1000N
Hope this is the right answer