Chemotherapy is a cancer treatment that uses drugs to kill cancer cells. however, it is problematic, because the drugs also kill every healthy cell that they contact. how could nanotechnology best be used to improve the treatment of cancer with chemotherapy? a nanometer-size carrier could be designed to bring the chemotherapy drugs only to cancer cells. a nano carbon wire could be designed that would aid in the manufacture of chemotherapy drugs. a quantum dot could be used to watch where the chemotherapy drugs go in the body. biomaterials could be made that would allow for cell growth within the cancer cells so that they are easier to find.

We want to calculate the total metabolic heat generated by a singing canary taking into account heat transfer by radiation, convection and exhaling air. the air temperature is 20 oc, canary’s body internal and surface temperature is 33oc, external body surface convective heat transfer coefficient is 25.2 w/m2 .k, temperature difference between the inhaled and exhaled air is 4.3 oc, the ventilation rate is 0.74 cc of air per second, specific heat of air is 1.0066 kj/kg.k and density of air is 1.16 kg/m3 . assume the canary’s body to be a cylinder with 7 cm diameter and 9 cm length, and heat exchange is from the side as well as the top and bottom of cylinder. calculate 1) the net rate of heat lost by radiation, assuming heat gained by the bird through radiation from the surroundings is 11.5 w; 2) rate of heat transferred by convection to the surrounding air; 3) rate of heat transferred in the exhaling air without considering any internal evaporation; 4) total metabolic power.

Which of the choices below is one of the primary gases found in the atmosphere? a. helium b. carbon dioxide c. nitrogen d. argon

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?