If the earth and distant stars were stationary (motionless) in space, what would we observe about the wavelength from these stars? a. wavelengths measured would match the actual wavelengths emitted. b. wavelengths measured would be shorter than the actual wavelengths emitted. c. wavelengths measured would be longer than the actual wavelengths emitted. if a star is moving toward us in space, what would we observe about the wavelength from these stars? a. wavelengths measured would be shorter than the actual wavelengths emitted. b. wavelengths measured would match the actual wavelengths emitted. c. wavelengths measured would be longer than the actual wavelengths emitted.

The car hoist allows the car to be driven onto the platform, after which the rear wheels are raised. if the loading from both rear wheels is 1380 lb, determine the force in the hydraulic cylinder ab. neglect the weight of the platform itself. member bcd is a right-angle bell crank pinned to the ramp at c. the force is positive if in tension, negative if in compression.

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.

Apair of 10μf capacitors in a high-power laser are charged to 1.7 kv.a. what charge is stored in each capacitor? b. how much energy is stored in each capacitor?