Aliens slowing down to observe Earth often are distracted by lighthouses. As aliens pass Earth in their spaceship they notice a lighthouse completes its circuit once every 8.0 s, however the lighthouse attendant has set the lighthouse to complete its circuit every 4.1 s from his point of view. How fast is the alien spaceship traveling in terms of the speed of light?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Pl asaaap ! match the term to the correct description. a type of wave that transfers energy where the particles in the medium move perpendicular to the direction in which the energy is traveling. a type of wave that transfers energy where the particles in the medium move parallel to the direction in which the energy is traveling. movement that is back and forth, like an equal sign = a type of wave that transfers energy where the particles in the medium move in a circle motion while the energy travels left or right. movement that is like a t transfers energy from one location to another 1. wave 2. parallel movement 3. perpendicular movement 4. transverse wave 5. longitudinal wave 6. surface wave

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than