Physics, 06.10.2019 09:30 joseperez1224
You are a friend who is a veterinarian to do some minor surgery on a cow in a remote location. lacking a portable autoclave, she has asked you to sterilize a scalpel and a hemostat by placing them in boiling water for 30 minutes. you boil them as ordered in 2.5 kg of water, and then quickly transfer the instruments to a well insulated tray containing 250 grams of sterilized water at room temperature (23 °c). after a few minutes the instrumen and water will come to the same temperature but will they be safe to hand to your friend without being burned? you know that both the 45 gram scalpel and the 75 gram hemostat are made from steel which has a specific heat of 450 j/(kg °c), and the specific heat of water at 23 °c is 4180 j/(kg oc) assuming that the temperature of the scalpel and hemostat are 100 °c after 30 minutes of boiling, what is the final temperature of the instruments after they have been in the 250 grams of sterile water?
Answers: 2
Physics, 22.06.2019 09:40
When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.
Answers: 1
Physics, 22.06.2019 11:10
Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.
Answers: 3
Physics, 22.06.2019 12:20
Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.
Answers: 2
Physics, 22.06.2019 13:10
Most short-period comets do not have randomly oriented orbits because
Answers: 2
You are a friend who is a veterinarian to do some minor surgery on a cow in a remote location. lack...
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