A astronaut exploring an asteroid jumps from a 10 meter tall cliff and lands on the surface 4.3 seconds later. What is the gravity on the asteroid?
O 9.8 m/s2
O 4.9 m/s2
O 1.1 m/s2
O O m/s2

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

Suppose that an electromagnetic wave which is linearly polarized along the x−axis is propagating in vacuum along the z−axis. the wave is incident on a conductor which is placed at z > 0 region of the space. the conductor has conductivity σ, magnetic permeability µ and electric permittivity ε. (a) find the characteristic time for the free charge density which dissipates at the conductor. (b) write the maxwell equations and derive the wave equation for a plane wave propagating in a conductor. (c) find the attenuation distance at which the incident amplitude reduces to e ^−1 of its initial value. (d) find the electric and magnetic fields inside the conductor. 8 (e) find the power loss per area of the incident electromagnetic wave at the surface of conductor.