Answer:
q₃ = - 13.0935 μC
Explanation:
Given
q₁ = q₂ = +7.67 μC
We use the equation
V = Kq/r
We can apply it as follows
V₁ = K*q₁/r₁ = K*q₁/(√2*L)
V₂ = K*q₂/r₂ = K*q₂/L
V₃ = K*q₃/r₃ = K*q₃/L
Then
V₁ + V₂ + V₃ = 0
⇒ (K*q₁/(√2*L)) + (K*q₂/L) + (K*q₃/L) = 0
⇒ (K/L)*((q₁/√2) + q₂ + q₃) = 0
⇒ (q₁/√2) + q₂ + q₃ = 0
Since q₁ = q₂
⇒ (q₁)((1/√2) + 1) + q₃ = 0
⇒ q₃ = - (q₁)((1/√2) + 1) = +7.67 μC*(1.7071)
⇒ q₃ = - 13.0935 μC
Answer:
2.22 m
Explanation:
According to literature, the highest abrupt deceleration the human body can experience and survive in a car accident is 250 m/s²
Using the equations of motion,
v² = u² + 2as
v = final velocity of the body = 0 m/s
u = initial velocity of the body = 120 km/h = 120 × 1000/3600 = 33.33 m/s
a = - 250 m/s²
s = ?
0² = 33.33² - (2×250×s)
500s = 1111.1111
s = 2.22 m
Answer:
Explanation:
The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.
Q = Heat absorbed= 16.7 kJ = 16700 J (1kJ=1000J)
m= mass of benzene = 225 g
c = specific heat capacity = 1.74 J/gK
Initial temperature of the water = = 20.0°C = 293 k
Final temperature of the water = = ?
Change in temperature ,
Putting in the values, we get:
The final temperature will be
Pathogens are microorganisms that cause infectious diseases. Bacteria and viruses are the main pathogens in the world today.
The major problem that pathogen cause in society is that they are the agents of infection and disease.
An infection results when a pathogen invades the body and begins growing within a host. A disease results when tissue function is impaired due to an infection.
Due to diseases, affected people can not work which negatively affects the economy, and the sick may end up dying causing a lot of grief, and robbing society of a father, a mother or child.
The government has to put money aside for health care which would otherwise have been used for other things to help the society.
Answer:
d1 = 9*d2 The second displacement is 9 times shorter.
Explanation:
We know that: where Vo = 0 for both trials
During the first trial:
Since t1 = 6s:
During the second trial:
Since t2 = 2s:
From these two equations we get:
d1 = 18/2*d2 => d1 = 9*d2