Two friends whisper at a volume of 20 decibels. Later, they converse at a volume of 40 decibels.

How much greater is the energy intensity of the conversation compared to the whisper?

A. 20 times

B. 10 times

C. 1,000 times

D. 100 times

In what way does varying the length of a string of a violin change the vibration and how does this affect the sound that's produced?

Boyle's law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 4l, the pressure is 720 kpa (kilopascals). What is the pressure when the volume is 10l?

Four techniques used in propaganda advertising are generalization, scare tactic, exaggeration, and.

What is the acceleration of an object if the velocity of am objects changes from 65 ms to 98 m/s during a time interval of 12 s?

An electric heater has a resistance of 50 ohms. If the applied voltage in a circuit containing the heater is 110 V, how many amps of current are flowing through the heater?

Noah Formula is in an airplane which is flying at constant speed in a circular course of radius 6500 m, circling O'Hare's airplane prior to landing. Noah observed that the plane completes each round trip in 345 seconds (5 minutes & 45 seconds).

What happens to particles when a substance gains energy and changes state?

The density of mercury is 13,600 kg/m³. Determine the mass of 10.0 cm³ of mercury.

A force of 250 N is applied to an object that accelerates at a rate of 10m/sec2. What is the mass of the object?

The grounded conductor and the grounding conductor are one and the same conductor and perform the same function.