can you please help me wit these Q1: When a tire pressure gauge is pressed again

Question

can you please help me wit these

Q1: When a tire pressure gauge is pressed against a tire valve, the air in the tire pushes against a plunger attached to a spring. Suppose the spring constant of the spring is k= 370NN/m, and the bar indicator of the gauge extends 1.80 cm when the gauge is pressed against the valve. What force does the air in the tire apply to the spring?

Q2: A transverse wave is traveling on a string. The displacement y of a particle from its equilibrium position is given by y= (0.0922 m) sin (16.0t - 4.00x) where x and y are in m, and t is in seconds.

a. What is the amplitude of the motion?

b. What is the frequency of this motion?

c. What is the period of this motion?

d. What is the wavelength of this motion?

e. What is the wave speed of this motion?

f. Is the wave traveling in the positive or the negative x-direction?

Q3: There are 3 sources of sound in a room. At the center of the room, source A registers 70.0 dB, source B registers 70.0 dB and source C registers 90.0 dB. What is the total sound level intensity at the center of this room?

Explanation / Answer

question 1)

Spring is an ideal spring

Fapplied = k x

= 370 * 0.018

force required for the air in the tire apply to the spring

= 6.66 N

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