A copper container of mass 0.20kg contains 0.10 kg of water. The specific heat capacity of copper is 385 J /(kg °C) and the specific heat capacity of water

is 4200 J /(kg °C).

How much energy, in joules, is needed to raise the temperature of the copper container and the

water by 10 °C?​

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.