When 137 ml of water at 25 °C is mixed with 82 ml of water at 76 °C, what is the final temperature of water? Assume that no heat is lost to the surroundings and that the density of water is 1.00 g/ml.

The chemical elements are arranged in order of increasing atomic number. The rows are called periods and the columns are called groups.

Which of the following statements about weight and mass is true A) the object mass depends on the force of gravity, but an object weight does not. B) An object's weight depends on its volume, but an object's mass does not.

Scientists can calculate the distance from the seismograph station to the focus using a. the difference in arrival times of P and surface waves. b. the difference in arrival times of P and S waves. c.

A black body radiates heat energy at the rate of 2 x 10 Js" m' at a temperature of 127° C. The temperature of the black body at which the rate of heat radiation is 32 x 105 Js'1 m2 is

The friends now feel ready to try a problem. Suppose an Atwood machine has a mass of m1 = 2.5 kg and another mass of m2 = 8.5 kg hanging on opposite sides of the pulley. Assume the pulley is massless and frictionless, and the cord is ideal.

You push a 45 kg wooden box across a wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.25. Now you double the force on the box. How long would it take for the velocity of the crate to double to 2.0 m/s

What is the middle layer of earth called

If 10 calories of energy are added to 2 grams of ice at - 30° C, calculate the final temperature of the ice. (Notice that the specific heat of ice is different from that of water.) T. F = -20° C -30° C 30° C 40° C

Are microwaves and radio waves faster or slower than other types of electromagnetic energy?

Write 5 sentences on the importance of including vegetables in your diet.