un granjero engancha un remolque cargado de leña a su tractor y lo arrastra 20m sobre el suelo horizontal. El peso total del remolque y la carga es de 14,700 N. El tractor ejerce una fuerza constante de 5000 N a la 36.9 grados sobre la horizontal. Una fuerza de fricción de 3500 N se opone al movimiento del remolque. Calcule el trabajo total realizado sobre el remolque

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.

It takes a lot of energy to get the temperature of water to increase and eventually boil because water has a high heat.

Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n