How much heat is needed to raise 8 kg of water from 4 degrees Celsius to 83 degrees Celsius
Waves with a frequency of 2.0 hertz are generated along a string The waves have a wavelength of 0.50 meters The speed of the waves along the string is
A 45 kg skater is skating down a hill on roller blades at a a speed of 10 ms what is the kinetic energy of the skater
A 120 ohm resistor a 60 ohm resistor and a 40 ohm resistor are connected in parallel to a 120 volt power source What is the effective resistance of the three resistors