Ipush a box with mass 10 kg across a 15 m room. if i apply a force of 20n to do this how much work is being done on the box?

What produces a record of seismic waves? richter scale seismogram barometer seismograph

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

According to the tide table below what time of day will the highest tide occur?