A telescope uses a large lens to gather and collect light.

What is the length x of the side of the triangle below? (hint: use the cosine function)

It takes a lot of energy to get the temperature of water to increase and eventually boil because water has a high heat.

Compare the maximum rate of heat transfer to the basal metabolic rate by converting a bmr of 88 kcal/hr into watts. what is the value? from this comparison you should see why the body can accommodate a modes amount of activity in hot weather but strenuous activity would increase the metabolic rate above the body's ability to remove heat [12].