The position of a mass that is oscillating on a spring is given by x = (12.3 cm) cos[(1.26 s-1)t]. What is the speed of the mass when t = 0.805 s?

A) - 13.2 cm/s
B) 13.2 cm/s
C) 8.19 cm/s
D) - 8.19 cm/s
E) 0 cm/s


A

Physics & Space Science

You might also like to view...

The least massive red main-sequence stars may have lifetimes of a trillion years

Indicate whether the statement is true or false

Physics & Space Science

A battery and 5 identical bulbs are arranged as shown. What happens when switch S is closed?

Physics & Space Science

What prevents the pressure from increasing as a cloud contracts due to its gravity?

A) As the cloud becomes denser, gravity becomes stronger and overcomes the pressure buildup. B) The pressure is transferred from the center of the cloud to its outer edges where it can dissipate. C) Thermal energy is converted to radiative energy via molecular collisions and released as photons. D) Excess pressure is released in jets of material from the young stars. E) Once the cloud reaches a critical density, the pressure becomes degenerate and independent of temperature.

Physics & Space Science

All multicellular organisms are

A) Bacteria B) Prokaryotes C) Archaea D) Eukarya

Physics & Space Science