Which requires more work: lifting a 50kg box vertically for a distance of 2m, or lifting a 25kg box vertically for a distance of 4 meters. How do you know?

The components of vector A are: Ax = + 6.0 Ay = - 6.5 What is the angle measured counterclockwise from the x-axis to vector A? 313° 47° 133° 223° 137°

What will the magnetic field of a long hole pipe carrying a current will be

What will the skydivers ke be when he land on the groun

Two charged particles repel each other with a force f. if the charge of one of the particles is doubled and the distance between them is doubled, then the force will be

What four things does the atmosphere do for us

A number of food chains linked together

Inside a stereo speaker, you will find two permanent magnets: one on the cone and one near the cone. True of false?

When a hurricane nears land what causes the most damage

Calculate if an electric hair dryer uses 2,400 j of energy in 2 s, what is its power?

Which of the following choices best represents a potential stressor?