4,186 Joules = 1,000 heat calories = 1 food Calorie Using the above conversions, calculate how many times (and how many flights of steps) a 150 lb person would have to climb the Sears Tower located in downtown Chicago if they ate a 500 Cal piece of apple pie and drank a 150 Cal soft drink. The Sears Tower is 1,450 feet high and has 110 flights of steps. Be sure to use the appropriate SI units!

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

If a car has a speed of 20 m/s, how long will it take to go 155 m? a. 3100 s b. 135 s c. 2.1 s d. 7.8 s