The British thermal unit (BTU or Btu) is a traditional unit of work equal to about 1055 joules. It is the amount of work needed to raise the temperature of one pound of water by one degree Fahrenheit (Physical analogue: one four-inch wooden kitchen match consumed completely generates approximately 1 BTU). BTU is the amount of heat required to raise the temperature of 1 avoirdupois pound of liquid water by 1 degree Fahrenheit at a constant pressure of one atmosphere. calorie, several definitions of the BTU exist, because the temperature response of water to heat energy is non-linear.
When an object free falls, it does not encounter a significant force of air resistance. Always Some Air Resistance. However, a falling object is going to run into some degree of air resistance. Air resistance is the outcome of collisions between the objectâs leading surface and air molecules. How much air resistance the object encounters depends on the speed the object is traveling and the cross sectional area of the object. When the object is falling faster, this increases air resistance.
My assigned question is âwhat is air resistance?â What is air resistance? Air resistance is a type of fluid friction. Air resistance occurs between moving air and objects. Air resistance is an Friction slows down the movement of an object. The air resistance can be decreased when the sides of the object are rounded. How does air resistance effect our everyday lives? Air resistance can effect you in helpful ways and in unhelpful ways. For example when riding in a car because there is air and your car is a moving object air resistance is created. Air resistance (because it is pushing against your vehicle) slows you down and obviously you do not go as fast as if the air was not pushing against.