The enthalpy of fusion of ice is 330,000 J/kg. If I have a 1 kg sample, how much energy is needed to melt all of it?

A. 33,000 J

B. 3,300 J

C. 330,000 J

D. 330 J

A stone with a mass of 1.0 kg is tied to the end of a light string which keeps it moving in a circle with a constant speed of 4.0 m/s on a perfectly smooth horizontal tabletop. The radius of the path is 0.60 m.

What naturally accurring radioisotope is used as the fuel for a nuclear reactor

What two quantities affect the force of attraction between two charges

If force A is 4 N and the mass of the dog is 2 kg, what will be the acceleration of the dog? (A) There will be no acceleration because Force A and Force B are equal. (B) 8 m/s^2 (C) 2 m/s^2 (D) 1/2 m/s^2.

Matt and Juan are studying chemical reactions and the law of conservation of matter in science. Each lab group conducted an experiment to verify the law. The boys materials can be seen in the data table: antacid tablet, water, and a zip lock baggie.

Where would a car traveling on a roller coaster have the most potential energy At the bottom It's always the same At the top Halfway to the top

Is a magnetic reversal a threat to life on Earth? Whay do you say?

What are the adaptions of the tundra

Based on the number of valence electrons, what is the correct formula when nitrogen bonds to hydrogen? A) NH2 B) NH3 C) NH4 D) N2H

Choose the correct statement about the currents through the elements. Choose the correct statement about the currents through the elements. The currents in series-connected elements are not the same and depend on a current or a voltage source.