In what speed does an object fall, if after 10 seconds it hits the surface of Earth?

Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 × 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?