Answer:
0.30 m/s²
Explanation:
Given:
v₀ = 0.2 m/s
v = 1.6 m/s
t = 4.7 s
Find: a
a = (v − v₀) / t
a = (1.6 m/s − 0.2 m/s) / 4.7 s
a = 0.30 m/s²
Answer:
33.7410805301 s
22336.5953109 m
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity = 
s = Displacement
a = Acceleration = 
g = Acceleration due to gravity = 9.81 m/s²
The time taken is 33.7410805301 s
The plane would travel 22336.5953109 m
The options are missing and they are;
A) the electric force increases because the balloon loses its charge.
B) the electric force increases because the distance increases.
C) the electric force decreases because the distance increases.
D) the electric force decreases because his hair loses its charge.
Answer:
Correct answer is option C - the electric force decreases because the distance increases.
Explanation:
The formula for electric force is;
F = k•q1•q2/r²
Where;
K is coulombs constant
q1 and q2 are particle charges
r is distance
So,looking at the formula given earlier, if we increase the distance, the denominator will increase and thus the Force will decrease.
So the correct option is option C
Answer: 0.1416 kg
Explanation:
Total Mass = Mass of beach ball + Mass of air inside
Mass of beach ball = 0.100 kg
Mass of air = density * volume
Density = 1.30 kg/m^3
Radius (r) = 21.6 cm = 0.216 m
Volume (sphere) = π * r^3 = π * (0.216)^3 = 0.032 m^3
Hence:
Mass of air = 1.30 * 0.032 = 0.0416 kg
Total Mass = 0.100 + 0.0416 = 0.1416 kg
The answer would be the Scientific Method.
