1.80 kj of heat is added to a slug of gold and a separate 1.80 kj of heat is added to a slug of manganese. the heat capacity of the gold slug is 149j/°c while the heat capacity of the manganese slug is 505 j/°c. if the slugs are each originally at 25.00°c, what is the final temperature of each slug?

How does convection affect our atmosphere? our layers of earth? our oceans?

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j