Why is alternating current more effective at long-distance travel than direct current?

A 5.00 kg crate is suspended from the end of a short vertical rope of negligible mass. An upward force F (t) is applied to the end of the rope, and the height of the crate above its initial position is given by y (t) = (2.80 m/s) t + (0.

A balloon filled with helium gas at 20°C occupies 4.91 L at 1.00 atm. The balloon is immersed in liquid nitrogen at - 196°C, while the pressure is raised to 5.20 atm. What is the volume of the balloon in the liquid nitrogen?

Which element (s) is/are not balanced in this equation? MgO+2 LiCI → MgCI2+Li2O A. All elements are balanced B. Mg C. CI D. Li

Before beginning an experiment, Mrs. Wilson warns her science class not to drop the bar magnets on the floor. What is the most likely reason for Mrs. Wilson's warning?

Lin Yao looks at the back of a spoon. How should she describe her reflection?

Who was brilliant mathematician used the data of tycho brahe to prove accuracy of copernicus basic ideas of motion of planets?

Explain why the bird offspring will differ from its parent more than the amoeba offspring will be from its parent

Name 3 Characteristics of the musculatory System

A solid sphere, solid cylinder, and a hollow pipe all have equal masses and radii and are of uniform density. If the three are released simultaneously at the top of an inclined plane and roll without slipping, which one will reach the bottom first?

What is a limitation of a physical model & mathematical model?