Phy sci B unit 3 waves alternate test.

Mechanical waves are defined by which of the following?
A. Carries energy from one place to another
B. Is created when an energy source makes a vibration
C. All of the above

Mechanical waves need an energy source to produce them?
true
or
false

A wave has a wavelength of 100 mm and a frequency of 6 Hz. What is its speed?

600 mm/s
106 mm/s
16.7 mm/s

Amplitude of a wave is?

A. The measurement from the top of one crest to another
B. How high the wave is from resting point
C. How many waves occur in one second

It’s a really long test so if you know all the answers please put them in your answer!!

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. 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. the block's initial mechanical energy is 9.472 j.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.