At an accident scene on a level road, investigators measure a car's skid mark to be 78 m long. It was a rainy day, so the coefficient of friction was estimated to be 0.30. Use this data to determine the speed of the car (in m/s) when the driver slammed on the brakes?

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life

Aheat engine that operates on a carnot cycle has an efficiency of 0.420 when its low-temperature reservoir is at 10 ∘c.part aby how many degrees celsius must you increase the temperature of the high-temperature reservoir to increase the efficiency to 0.600 if you continue to use the same low-temperature reservoir?

Which statements did both aristotle and ptolemy assume? check all that apply.