State Kepler's second law
What will be an ideal response?
A line from the Sun to a planet sweeps out equal areas in equal lengths of time.
You might also like to view...
The area under a graph of ax vs. t from t = ti to t = tf represents
A. xf?xi. B. vf?vi. C. xav. D. vav. E. aav.
Polarization: For a beam of light, the direction of polarization is defined as
A. the beam's direction of travel. B. the direction of the electric field's vibration. C. the direction of the magnetic field's vibration. D. the direction that is perpendicular to both the electric and magnetic field vectors.
Uncertainty Principle Using Momentum and Position: A tiny dust particle of mass 8.50 µg is being observed under a microscope. Its position is determined to be within a space of 0.0060 mm. (h = 6.626 × 10-34 J ? s)(a) Find the uncertainty in its speed implied by the uncertainty in its position.(b) Assuming the dust particle is moving at the speed in part (a), how many years would it take for the particle to move 1.0 mm?
What will be an ideal response?
Refraction occurs at the interface between two transparent media because:
1.The mass density of the material changes. 2.The frequency of the light changes. 3.The speed of light is different in the two media. 4.The direction of the light changes. 5.Some of the light is reflected. 6.None of the above.