7. While visiting the amusement park, Sarah and Sam choose to ride the bumper cars while their teacher records video of their collisions. Back in the classroom, the students analyze a head-on
collisions between Sarah and Sam's two cars. After the collision, students notice that both cars
have the same acceleration and come to rest at the same distance from the crash. What can
the students infer about the masses of the cars?

A. Their masses are equal because both momentum and kinetic energy are conserved.

B. Their masses are unequal because both momentum and kinetic energy are conserved.

C. Their masses are equal because neither momentum nor kinetic energy is conserved.

D. Their masses are unequal because neither momentum nor kinetic energy is conserved.

1. how much energy is needed to raise the temperature of 40.0 g of argon from 25c to 40c? the specific heat capacity of argon is 0.520 j/(g·k) 2a. 23.0 ml of 0.100 m hcl (standard) are added from a buret to neutralize 50.0 ml of an unknown basic solution. 2b. if the oh- produced in the previous reaction came from ca(oh)2, then what is the molarity of the ca(oh)2? 3.calculate the new freezing-point of a solution when 60.5 grams of cacl2 solute is dissolved in 0.612 kg of water. 4. what is the maximum number of moles of alcl3 that can be produced from 5.0 mol al and 6.0 mol cl2? 5. a sample of oxygen gas has a volume of 150 ml when its pressure is 0.923 atm. if the pressure is increased to 0.987 atm and the temperature remains constant, what will the new volume be? 6. nitrogen gas in a closed container at a temperature of 100.0 oc and 3.0 atm is heated to 300 oc. what is the pressure of the gas at the higher temperature?

Marvin records scientific data about lake superior. for which property has marvin forgotten to use an si unit of measurement? shore length high temperature low temperature annual precipitation

What is the single most important equation in all of physics?