A woman is deciding between three alarm systems to install in her home. Each alarm system produces a wave with a different wavelength and decibel level, as shown in the following table.

1st number: Wavelength (cm)

2nd number: Decibels (dB)

Alarm A

8

100

Alarm B

32

80

Alarm C

128

60

If the woman wants the alarm with the lowest pitch, which alarm should she choose? Explain your answer.

Based on the data in the table, which alarm produces sound waves with the greatest amplitude? Explain your answer.

Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?