Un radar trasmette un segnale radio (velocità di propagazione del segnale = 300 000 km/s) che incide su un oggetto e viene riflesso. Il segnale di ritorno arriva al radar dopo un millesimo di secondo dall'istante in cui è partito. A quale distanza si trova l'oggetto?

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.