Could someone please help me with this as soon as possible?! I just need someone to walk me through how to solve it! Thank you! A 2.53 kg chunk of copper at -155°C is
dropped into 0.822 kg of water at
15.0°C. They cool to 0°C, and some
(but not all) of the water freezes to ice at
0°C. How much ice freezes?

(Unit = kg)

Apackage of supplies is dropped from a plane, and one second later a second package is dropped. neglecting air resistance, the relative velocity of the 1st package viewed from the second will 56) a) increase. b) be constant. c) be zero. d) depend upon their weight. e) decrease

What is the single most important equation in all of physics?

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.