Tape recorders contain strips of thin plastic tape, which are covered in a layer of very fine iron dust. The iron dust reacts to a changing magnetic field and slightly rearranges itself on the tape, thereby recording the pattern generated by the changing magnetic field.

found in the nucleus

has mass of one amu

the total distance traveled by the car is

30km + 49km = 79 km .

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2