<span>Hypertension is called the silent killer because most patients with </span>high blood pressure<span> have no symptoms to alert them to the elevated pressure. But over time,</span>high blood pressure<span> increases the risk of serious problems such as stroke, congestive heart failure, heart attack, and kidney failure.</span>
Any requirement for a driver's license, land or home ownership,
or employment as a voting qualification is discriminatory, and is
illegal in the US. Only registration is legally required.
Answer:
answer a) 2
Explanation:
Assuming stationary state, following Fourier's law:
Q = A*k* dT/dL
where Q= heat flow , A= cross sectional area, dT/dL= temperature gradient along the bar
if the cross sectional area is doubled , then the gradient is the same ( since the heat sources do not change in temperature or position , and the length of the bar is the same). Since the gradient is same , the temperature is the same under stationary conditions , then we can assume k remains constant in the cross section.Therefore
Q₁= A₁*k* dT/dL
Q₂= A₂*k* dT/dL
dividing both equations
Q₂ / Q₁ = A₂/A₁ = 2
then the correct answer is a)
Note:
Since the cross sectional area is doubled, then heat loss to the surroundings will be
Q loss= h* A exposed * ΔT
then
Q loss₂ / Q loss ₁ = A exposed ₂/ A exposed ₁
for a circular cross section or a squared cross section
A exposed ₂/ A exposed ₁ = √2
then
Q loss₂ / Q loss ₁ = √2
therefore we did not take into account the increase in heat loss due to the increased in exposed area to the environment
<h2>
The gravitational acceleration on planet X is 32.7 m/s²</h2>
Explanation:
The acceleration due to gravity is given by
where G is gravitational constant, M is mass and R is radius.
For earth we have
g = 9.81 m/s²
That is
For planet X we have
Substituting
The gravitational acceleration on planet X is 32.7 m/s²
Answer:
Explanation:
Self centered means you think about yourself and can sometimes mean that you're arrogant. Self aware means you are aware of certain things you do. Self centered has a negative connotation while self aware has a positive one.