janny

M A R C H please help me today is my last day

How much energy is released when 2.55kg of diethyl ether freezes?

a 14.7g ice cube is placed into 324g og water. calvulate the temperature change in the water upon complete melting of the ice. hint: determine how ,uch heat is absorbed by the melting ice and then use q=mc delta T to calculate the temperature change. use...

Suppose a simple pendulum is used to measure the acceleration due to gravity at various points on the Earth. If g varies by 0.151 % over the various locations where it is sampled, what is the corresponding variation in the period of the pendulum? Assume t...

In a lab, a student measures the unstretched length of a spring as 0.109 m. When a 131.4-g mass is hung from the spring, its length is 0.201 m. The mass-spring system is set into oscillatory motion, and the student observes that the amplitude of the oscil...

A 2.49-m-long string, fixed at both ends, has a mass of 7.17 g. If you want to set up a standing wave in this string having a frequency of 455 Hz and 5 antinodes, what tension should you put the string under?

131.4 g = 0.1314 kg