A 50 g particle that can move along the x-axis experiences the net force Fx=2.0t2N, where t is in s. The particle is at rest at t = 0 s. What is the particle's speed at t = 2.8 s?

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s. part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.

Which word expression describes how much to calculate pressure