On a certain dry sunny day, a swimming pool's temperature would rise by 13 C° if not for evaporation. What fraction of the water must evaporate to carry away precisely enough energy to keep the temperature constant? Express your answer in decimal form, to at least two digits after the decimal point.

A closed box is filled with dry ice at a temperature of -86.0 °C, while the outside temperature is 21.0 °C. The box is cubical, measuring 0.394 m on a side, and the thickness of the walls is 4.49 × 102 m. In one day, 3.76 × 106 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made. Number Units

A copper pipe in a house that carries hot water is installed at 22 °C at a length of 16 m. The final temperature of the pipe is 61°C when the hot water is flowing through it. What is the change in length of the pipe, to three decimal places expressed in m?

When it rains, water vapor in the air condenses into liquid water, and energy is released. (a) How much energy is released when 0.0356 m (1.40 inch) of rain falls over an area of 2.59×106 m² (one square mile)? (b) If the average energy needed to heat one home for a year is 1.50x10¹1 J, how many homes could be heated for a year with the energy determined in part (a)? (a) Number i (b) Number 1 Units Units

The equation for the linear relationship between degrees Fahrenheit and degrees Celsius is as follows: y=(1.8 °F/ °C) x + 32⁰ F What is the magnitude of the slope? O 57.6 1.8 32

An ice cube of mass 0.1 kg at 0°C is placed in an isolated container which is at 227°C. The specific heat S of the container varies with temperature T according to the empirical relation S = A + BT, where A = 100 cal/kg-K and B = 2 x 102 cal/kg-K². If the final temperature of the container is 27°C, determine the mass of the container. (Latent heat of fusion for water = 8 x 10 cal/kg, specific heat of water = 10³ cal/kg-K).

153 kilojoules [kJ] of energy are expended lifting a pile of bricks 50 feet [ft] into the air.  If each brick weighs 5 pounds-force [lbf] and has dimensions of 8 inches [in] x 2.25 inches [in] x 4 inches [in], calculate the number of bricks lifted.  Round your answer to the nearest whole number of bricks.

An arctic weather balloon is filled with 49.6L of helium gas inside a prep shed. The temperature inside the shed is 11.°C. The balloon is then taken outside, where the temperature is −39.°C. Calculate the new volume of the balloon.You may assume the pressure on the balloon stays constant at exactly 1atm. Round your answer to 3 significant digits.

When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV14 = C where C is a constant. Suppose that at a certain instant the volume is 560 cubic centimeters and the pressure is 81 kPa and is decreasing at a rate of 9 kPa/minute. At what rate in cubic centimeters per minute is the volume increasing at this instant? cm min (Pa stands for Pascal -- it is equivalent to one Newton/(meter squared); kPa is a kiloPascal or 1000 Pascals. )

2.2 kg of ice (solid phase of water) at -10°C is heated under atmospheric pressure. Answer the following questions. Use the following values for your calculation. specific heat of ice: 2.1 kJ/(kg °C) specific heat of water: 4.2 kJ/(kg °C) specific heat of vapor: 2.0 kJ/(kg °C) latent heat of fusion: 334 kJ/kg latent heat of vaporization: 2260 kJ/kg    How much heat is required to raise the temperature of the ice to melting point T = 0°C?  How much heat is required to change the phase of the ice to liquid water?  How much heat is required to raise the temperature of the liquid water to boiling point T = 100°C?