Your baby brother is toddling around the house, playing with a toy balloon. You decide to teach him something about physics, so you take the balloon away from him and hide it in the freezer. (His cries are enough to convince you that he is excited about this learning experience.) a) If the temperature inside your house is 25° Celsius, while the temperature inside the freezer is -10° Celsius, then by what percentage will the volume of the balloon change? We will take the pressure inside the balloon as constant. When you put the balloon in the refrigerator, it will shrink. (Try it and see!) c) Sketch a p-V diagram for the gas inside the balloon as it cools inside the regrigerator. Label the axes as completely as possible according to the given information.

Calculate the kinetic energy of a ×9.41012kg comet moving at a speed of 39.0kms .Round your answer to 2 significant digits.

1.calculate the velocity (in m/s ) of a 2.33-g object that has Ek-46.2 J.

Use the References to access important values if needed for this question. Two-Step Algebra a =b+ cd lne In order to solve the equation above for d, you must: Step One Add the same expression to each side of the equation to leave the term that includes the variable by itself on the right-hand side of the expression: -b ta =-bv +b+ cd Ine Step Two Multiply both sides of the equation by the same expression: x(a - b) = xcd Ine The resulting equation is: d = Submit

Calculate the kinetic energy of a 4.2 x 10^4 kg airplane moving at a speed of 155.ms Round your answer to 2 significant digits.

Taking the density of air to be 1.29 kg/m3, what is the magnitude of the linear momentum of a cubic meter of air moving with the following wind speeds? (a)    35 km/h b)    74 mi/h—the wind speed at which a tropical storm becomes a hurricane

Stan Moneymaker needs 15 gallons of gasoline to top off his automobile’s gas tank. If he drives an extra eight miles (round trip) to a gas station on the outskirts of town, Stan can save $0.10 per gallon on the price of gasoline. Suppose gasoline costs $3.90 per gallon and Stan’s car gets 25 mpg for in-town driving. Should Stan make the trip to get less expensive gasoline? Each mile that Stan drives creates one pound of carbon dioxide. Each pound of CO2 has a cost impact of $0.02 on the environment. What other factors (cost and otherwise) should Stan consider in his decision making?

m Calculate the kinetic energy of a 159.0 g baseball moving at a speed of 42.0 Round your answer to 3 significant digits.

Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of hydrated copper(II) chloride, in order to determine the value of x. The following results were obtained:       mass of crucible = 16.221 g      mass of crucible and hydrated copper(II) chloride = 18.360 g      mass of crucible and anhydrous copper(II) chloride = 17.917 g   At. Mass: Cu 63.55   Cl 35.45   H 1.008    O 16.00  1.  Calculate the number of moles of H2O (answer must be expressed to 5 decimal places)