Question 3 (3 points) Question 3 options:

_ 83.80 1.element symbol

_ 36 2.atomic mass

_ Kr 3.atomic number

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?

A15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°c to 175°c. what is the specific heat capacity of iron?