Which is the correctly balanced equation for the reaction of rust, fe2o3, and hydrochloric acid, hcl?
fe2o3 + hcl → fecl3 + h2o
fe2o3 +3 hcl → 2 fecl3 + h2o
fe2o3 + 6 hcl → 2 fecl3 + 3 h2o
fe2o3 + 3 hcl → 2 fecl3 + 3 h2o\
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Agalvanometer has an internal resistance of 100 ω and deflects full-scale at 2.00 ma. what size resistor should be added to the galvanometer to convert it to a milliammeter capable of reading up to 4.00 ma, and how should this resistor be connected to the galvanometer?

According to newton's second law, when the same force is applied to two objects of different masses, a the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration, b. the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration, c. the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration, d. the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

You can decrease the resistance of a length of wire by