Radio waves are transmitted to Earth from satellites; however, mechanical waves are unable to travel through space. Which answer is the BEST explanation for how satellites work?

The applied force of 3 washers will increase the applied force on the car to n.

Industrial processes often require the damping of vibrations. consider a workbench that uses four large ideal springs in place of traditional legs, with each spring supporting one corner of the workbench and exhibiting a force constant of 47500 n/m. this workbench is used when creating products that involve highly unstable chemicals. according to specifications, the acceleration of the manufacturing equipment must be held to less than 22.3 m/s2 for the manufacturing process to proceed safely. the amplitude of vibrations are expected to remain under 0.622 mm throughout. given that the workbench and maufacturing equipment combine to 6.05 kg, find the maximum acceleration expected of the equipment and workbench. (ignore the mass of the springs.)

The focal length of a lens is determined by the curve of the lens and the material that the lens is made from. (5 points) is this true or false? ?