Which mechanical waves needs a medium to travel through?

Transverse and longitudinal waves only

Longitudinal and surface waves only

At mechanical waves need a medium to travel through

Surface waves only

How are scientific theories different than laws or hypotheses? Theories can be changed to better fit new evidence Theories can remain the same over hundreds of years Theories can be proven beyond any doubt or questioning Theories can develop without

Carry out the following arithmetic operations find the quotient of 3.2 m / 3.563 s.

Friction is a force that ___ or works against motion

The electric potential inside an object made from a conducting material is

What is the power of a parallel circuit with a resistance of 1,000 and a current of 0.03 A?

Which planet, when viewed through a telescope, appears as a reddish ball interrupted by some permanent dark regions that change intensity?

A wave has a wavelength of 10 mm and a frequency of 5 hertz. What is its speed? a. 50 mm/s b. 50 hertz's c. 2 mms d. 0 0.50 mms

Suppose you illuminate two thin slits by monochromatic coherent light in air and find that they produce their first interference minima at / pm 35.09 degrees on either side of the central bright spot.

Tala wants to create a sound echo. She can create the echo using a pane of glass or a carpet square. Which one does she choose? Explain.

a the average distance from the Sun to Pluto is approximately 6.10 x 1 0 ^9. how long does it take light from the sun to reach Pluto?