A hot cup of coffee will cool down at a certain rate, but as the coffee cools, the rate at which it cools slows down. This is why a "lukewarm" cup of coffee cools down so slowly. Even though the warm cup of coffee is cooling down quicker at first, the lukewarm cup essentially has a "head start" on the way to room temperature.
Nothing.
You measure the ambient temperature before the experiment in case the experiment is sensitive to ambient temperature. You want to record all of the environmental factors that might affect the experiment before starting it. You measure the ambient temperature after the experiment for the same reason, and also in case the experiment affected the ambient temperature. Depending on the experiment, environmental factors may need to be considered when analyzing the results.
1 kelvin = -272.15 C ,,do some search before you ask .
One thermometric property that is required is that it must vary linearly with temperature. In liquid-in-glass thermometers, the length of the liquid thread is often used to determine temperature. Thus when temperature increases, the liquid must expand uniformly with temperature, so that it can be used to measure temperature accurately.
moderator, slows fast fission neutrons to thermal (near room temperature) energies rapidly enough to prevent their capture by uranium-238 before they can participate in the chain reaction and fission uranium-235control, remove excess neutrons so as to hold the reactor at exactly critical at all times, permit control of increases and decreases of operating power level
Just a little bit above cold, somewhere around body heat. Body heat is 98.6°F or 37.0°C. So lukewarm would fall roughly somewhere between 79 - 97 °F or 26 - 36°C.
Just about the same as your body temperature.
The right temperature must be at least 70 to 90 degrees
One notch before the halfway point.
because in those cases, the endpoint will not be correct if the titration is carried out at low temperature
I swam rapidly trying to get to the finish line before my oppenent did. RAPIDLY MEANS VERY FAST
At room temperature, bacteria (which are everywhere, even in your water) multiply very rapidly, so be wary of water that's been sitting for more than a few hours, particularly if uncovered.
You run it until the engine reaches normal operating temperature on the temperature gauge this way the oils viscosity will be correct. on colder days you need to run it longer.
both correct in past or present.
No, the correct sentence should be "Had you taken the test before?"
A correct way to ask this question is, "What were you doing before?"
So they can swim longer.