Tell me a little bit sabout dormant volcanoes

its actually in science

Determine the heat given off to the surroundings when 9.0 g of aluminum reacts according to the equation 2al + fe2o3 → al2o3 + 2fe, δh°rxn = - 849 kj/mol.

A system absorbs 12 j of heat from the surroundings; meanwhile, 28 j of work is done on the system. what is the change of the internal energy Î'eth of the system?

An electron moves with a speed of 5.0 * 104 m/s perpendicular to a uniform magnetic field of magnitude 0.20 T. What is the magnitude of the magnetic force on the electron? (e = 1.60 * 10-19 C)

A deposit windblown sand is called

Acid compounds contain a. Oxygen B. Ion c. Hydrogen

A group of organ systems that work together make up a (n) tissue organism organ cell

Different constellations are visible at different times of the year because of A) the relative motion between earth and the sun B) the relative motion between earth and the moon C) the celestial equator D) the celestial sphere

Why does alternating current change direction 50 to 60 times per second?

Tony uses the device shown in the diagram to model how an electromagnet is used in his uncle's scrap metal yard.

A flight attendant pulls a 60.0 N flight bag a distance of 239.0 m along a level airport floor at a constant speed. A 21.0 N force is exerted on the bag at an angle of 66.0 degrees above the horizontal. How much work is done on the flight bag?