A 2 kg block slides on a rough horizontal surface with muk=0.6. It has an initial velocity of 5 m/s. Use g = 10 m/s2 The initial kinetic eneryg of the block is : J.

As the block slides a distance of 0.8 m, the work done by friction is: J. (be careful)

The final kinetic energy of the block after sliding 0.8 m is: J.

The final speed of the block after sliding 0.8 m is: J. (Use 2 significant figures)

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

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

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?