1. The instrument at the right is 5 meters long and is vibrating as shown It vibrates up and down with 33 complete vibrational cycles in 10 seconds.

a) What type of instrument being used?
b) Which harmonic is shown in the diagram?
c) Determine the frequency, period, wavelength and speed for this
wave.
d) Determine the 3rd harmonic frequency?​

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

Which of the following is an example of motion in two dimensions?