The number of electorn is morn than proton in nuclie. why?

Jim quadruples the distance between himself and a sound source. What is the change in decibels of the sound he hears? A. - 6 dB B. - 12 dB C. + 6 dB D. + 12 dB

A block of foam has a mass of 10 g, a volume of 60 cm3, and a length of 30 cm. What is the density of the foam? (If necessary, round your answer to three decimal places.)

Describe the trip from your home to school using the words position, distance, displacement, and speed.

A beam of red and blue light in air is incident at 30º on a glass surface. Which is true? a. The blue light is bent toward the normal more than the red light. b. The blue light is bent toward the normal less than the red light. c.

Having landed on a newly discovered planet, an astronaut sets up a simple pendulum of length 0.971 m and finds that it makes 319 complete oscillations in 846 s. The amplitude of the oscillations is very small compared to the pendulum's length.

A frog in a hemispherical pod finds that he just floatswithout sinking in a fluid of density 1.25 g/cm3. If the pod has a radius of3.00 cm and negligible mass, what isthe mass of the frog?

What is the reasonable estimate for Lim g (x)

Do tides depend more on the strength of gravitational pull or on the difference in strengths? explain.

Which of the following scenarios would create the most friction between the two surfaces? A.) a shoe with a rubber sole moving against a smooth tile floor B.) a shoe with a wooden sole moving against a smooth tile floor C.

A ball is dropped from rest from the top of a building. what force is responsible for the downward motion of the ball?