El planeta Urano tiene una densidad de 1.27 g/cm3 mientras que la tierra posee una densidad de 5.51 g/cm3. Sin embargo el volumen de la tierra es mucho menor que el del planeta Urano. ¿A qué se debe este hecho ?

To create electromagnetic induction, which of the following has to move? a. a wire b. a magnet c. a transformer d. either a or b

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?