10. How far does a transverse pulse travel in 1.23 ms on a string with a density of 5.47 × 10−3 kg/m under tension of 47.8 How far will this pulse travel in the same time if the tension is doubled?

Tension = 47.8N, Δx = 11.5× m.

              Tension = 95.6N, Δx = 15.4× m

Explanation: A speed of wave on a string under a tension force can be calculated as:

is tension force (N)

μ is linear density (kg/m)

Determining velocity:

0.0935 m/s

The displacement a pulse traveled in 1.23ms:

Δx = 11.5×

With tension of 47.8N, a pulse will travel Δx = 11.5×  m.

Doubling Tension:

|v| = 0.1252 m/s

Displacement for same time:

15.4×

With doubled tension, it travels 15.4× m

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.