Se apunta un rifle horizontalmente con mira a un blanco pequeño que está a 200 m en el suelo. la velocidad inicial de la bala es de 500m/s. calcular: ¿qué tiempo dura la bala en el aire? ¿a qué altura del suelo estaba el rifle?

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?