SMANSA Science

Victoria knows it all asked:


If this is too much to read skip to the bottom my question is there. But the following story gives some background.

Okay 4 years ago my mom went to the cardiologist to find out why she has a heart murmor. They did and ECG and discovered she had a “bi cuspid aeortic valve”. We were told its not a big deal that she would just have to take an antibiotic before going to the dentist and really didnt have any other effect on her life.
Now 2 months ago she had the flu. After she recovered from that she realized how much weaker, and easily out of breath she was getting. She also started feeling her heart “go flip flop”. I told her to go to the doctor because of her heart.
They did and EKG and imediately sent her to the cardiologist for and ECG. He told her that her valve was “thickened” and needed replaceing soon. So she now has an appt with a cardiovasculer surgeon in 2 weeks.

My question is : What things she we ask or make sure we are aware of before the surgery?

Article by SMANSA

Daniel asked:


If a person at an altitude of 15,000 ft takes in the same volume of air with each breath as she does while walking at sea level, what is the ratio of the mass of oxygen inhaled for each breath at this high altitude compered to that at sea level?

please help?

Article by SMANSA

XanX asked:


An iron anchor appears 20,000 N lighter in water than in air.

What is the volume of the anchor?

How much does it weigh in air?

I think i got the volum right at .127m^3, but Im unsure how to solve for the weight in air, and Im hoping to get confirmation on the volume, thanks for your help.

Article by SMANSA

Daniel asked:


The troposphere extends to an altitude of 11km where the pressure is 22.6 kPa. in the next layer, the stratosphere, the temperature remains constant at -56.5 celcius. determine the pressure and density in this layer at an altitude of 15 km. assuming g = 9.77 m/s^2

please help me!

Article by SMANSA

kidfos asked:


I lost the use of my left leg in a training accident with the army almost a year ago. While i was a soldier I used to run or cycle 10/15 km a day at least. Now I can hardly walk without a stick.
Because of this my fitness and health is suffering. I eat healthy but weight * about 25lbs* is creeping up. Is there ANY cardiovasculer training I can do that will keep me fit, burn off calories and not make me look like a nugget while doing it?!

Article by SMANSA

heidee_0814 asked:


as you walk past a cup of coffee sitting on a desk, the coffee has a velocity relative to you. would you describe the coffee with fluid statics or fluid dynamics?

Article by SMANSA

wigwag2333 asked:


An empty tank is 6 feet in diameter and 10 feet long. The tank is placed underground in a horizontal position and to a depth where the ground water level is 4 feet above the top of the tank. The buoyant force on the tank due to the ground water is MOST NEARLY ______ lbs.

A. 15,600
B. 16,600
C. 17,600
D. 18,600

Please proved a detailed explanation!
THank you I think I was overthinking the problem

Article by SMANSA

mikeo853 asked:


There are two dams of equal area. One dam holds back a very large lake, the other holds back a very narrow river. Which dam has to be built stronger?

Article by SMANSA

flyingsaber89 asked:


I’m a good runner, but I need to get faster. How would I go about improving my cardiovasculer level and become faster? Any help would be well appreciated.

Article by SMANSA