A ball of copper weighing 400gm is transferred from a furnance to 1kg of water at 20°C. The temperature of mixture is found to be 50°C. What is the original temperature of ball? ​

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

Describe cytokinesis in plants and animals. in animals: in plants.