ProblemsShow equation, work, final answer with correct units. 1. What is the wavelength of a sound wave with a frequency of 50 Hz? (Speed
of sound is 342 m/s)

2. A sound wave in a steel rail has a frequency of 620 Hz and a wavelength of
10.5 m. What is the speed of sound in steel?

3. Determine the frequency of a microwave 6.0 cm in length. (A microwave is an
electromagnetic wave. It travels through space at a speed of 3.0 x 10^8
m/s

4. What is the period of the microwave in problem 3?

Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?