INVESTIGATION 1 I-CHECK ENERGY
1. A group of students in another class needs your help.
They want to design a switch to control a circuit that
runs a motor. The materials that were available were
a thin sheet of copper, brass fasteners, and a paper clip.
They used the materials as you see in the diagram.
When they put the switch into the circuit with the
D-cell and motor, the motor spun all the time. No
matter what position the switch was in, open or closed,
the motor kept spinning.
a.
What do you think the problem is with the switch?

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.

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .

Which is not true about oxygen-17 and oxygen-18?