Question 3 (34 points)
explain the significance of the discovery of tiktaalik. what are the characteristics of
tiktaalik that make it a transitional form? what was important about the location in
which tiktaalik was found (time and space)? what important step in evolution did
this fossil demonstrate?

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.

Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object