Astudent solving for the acceleration of an object has applied appropriate physics principles and obtained the expression a=a1+fm where a1=3.00 meter/second2, f=12.0 kilogram⋅meter/second2 and m=7.00 kilogram. which of the following is the correct step for obtaining a common denominator for the two fractions in the expression in solving for a? 1. (m/m times a1/1) + (1/1 times f/m) 2. (1/m times a1/1) + (1/m times f/m) 3. (m/m times a1/1) + (f/f times f/m) 4. (m/m times a1/1) +(m/m times f/m )

The particles of an ice cube at 0°c (represented by the blue circles) come in contact with the particles of juan’s hand at 37°c (represented by the orange circles). which diagram correctly represents the temperature of the two substances and the direction of heat flow?

How will the system respond to a temperature increase?

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?