Which of the following statements about braking a car are true? (more than one)
a. the greater the kinetic energy of a car, the longer it takes for the car to stop.
b. the lower the kinetic energy of a car, the longer it takes for the car to stop.
c. if the speed of a car doubles, the car’s kinetic energy and braking distance quadruple.
d. if the speed of a car doubles, the car’s kinetic energy and braking distance remain the same.

Select all the correct answers. which three statements about electromagnetic radiation are true?

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?

On a hot saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22degreesc. at noon the air conditioner is turned off, and the people go home. the temperature outside is a constant 33degreesc for the rest of the afternoon. if the time constant for the building is 4 hr, what will be the temperature inside the building at 4 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? at 6 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? when will the temperature inside the building reach 24degreesc? 324281