Which statement is true about the technology used to improve the motion of space vehicles on rough surfaces?
a.) it has made road travel easier because photopolarimeters are used to send signals while moving at high speed.

b.) it has improved vehicle design on earth because the same technology is used to ensure smooth motion of automobiles.

c.) it has made road vehicles safer because magnetometers are used to detect particles found in radiation emitted during combustion of fuel.

d.) it has made road travel more comfortable because the high-gain antenna has been able to measure the magnetic fields around vehicles to reduce judders.

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

Which levels of government establish and implement educational requirements for minors

Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?