A 4.00-cm tall light bulb is placed a distance of 40 cm from a concave mirror having a focal length of 18 cm. Determine the image distance and the image size. (Hint: first determine the di and then use it to determine the hi.)

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )

A1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. what is the magnitude of the friction force required to keep the car from sliding?