Why are there two types of core?

A hot water heater is operated by using solar power. if the solar collector has an area of 5.3 m2, and the power delivered by sunlight is 995 w/m2, how long will it take to increase the temperature of 1 m3 of water from 20 ◦c to 65 ◦c?

The impact that an earthquake can have on an area?

When the kinetic energy of particles in a substance decreases, what also decreases? The size of the particles in the substance. The number of particles in the substance. The substance's specific heat. The substance's temperature.

15.6 grams of lead (II) nitrate is in a test tube. A 4.8-g sample of potassium iodide is an Erlenmeyer flask. The substance in the test tube is poured into the Erlenmeyer flask so that the two substances react. The mass of the Erlenmeyer flask 115.

An aerobatic airplane pilot experiences weightlessness as she passes over the top of a loop-the-loop maneuver. the acceleration of gravity is 9.8 m/s 2. if her speed is 430 m/s at this time, find the radius of the loop. answer in units of km.

In order to hike around a portion of Lake Allatoona, a tour guide determines that he must take his group 150 m east, 60 m north, then 75 m west.

Explain what happens to light when it is refracted at the surface of water.

A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the magnitude of the momentum change during the collision is correct? (There could be more than one correct choice.

Consider the following distribution of objects: a 3.00-kg object with its center of gravity at (0, 0) m, a 4.20-kg object at (0, 6.00) m, and a 1.40-kg object at (1.00, 0) m. Where should a fourth object of mass 7.

A Volt/Amp Is Also Known As.?