You are 15.0m from the source of a sound. At that distance, you hear it at a sound level of 20.0dB. How close must you move to the sound to increase the sound level to 60dB?

I think its 45.0cm?

15.0cm

45.0cm

55.0cm

60.0cm

85.0cm

As a 5.0 * 102-newton basketball player jumps from the floor up toward the basket, the magnitude of the force of her feet on the floor is 1.0 * 103 newtons. As she jumps, the magnitude of the force of the floor on her feet is

Consider two copper wires with the same cross-sectional area. Wire A is twice as long as wire B. How do the resistivities and resistances of the two wires compare? Check all that apply. Check all that apply.

What are three examples of constructive forces

A 16ft seesaw is pivoted in the center. At what distance from the center would a 200lb person sit to balance a 120lb person on the opposite end?

Select the higher harmonics of a string fixed at both ends that has a fundamental frequency of 80 Hz.

The act, process or state of the change in place or position oa a body with respect to time and relative to the observer is said to be : - 1. Rest 2. Stationary 3. Motion 4. None of the above

During a snowball fight two balls with masses of 0.4 kg and 0.6 kg, respectively, are thrown in such a manner that they meet head on and combine to form a single mass of 1 kg. the magnitude of intial velocity foreach is 15 m/s.

Which phases of matter do molecules have the lowest amount of energy?

How many Oxygen (O) atoms are in the following? H2O + CO2 4 3 2

How does surface roughness affect friction