Suppose that a car is moving through a suburban environment that has a wireless channel with a coherence time of 10 ms and a coherence bandwidth of 600 kHz. The bit rate of the signal being used is 50 kbps. Characterize the channel. a. Is the channel slow or fast fading? b. Is the channel flat of frequency-selective fading?

Aforce of 34n stretches a very light ideal spring 0.73 m from equilibrium, what is the force constant (spring constant) of the spring? (a) 47n/m (b) 38n/m (c) 53n/m (d) 25n/m

What is friction? how does it affect the motion of an object?

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .