Your stereo is in a dead spot caused by direct reception from an fm radio station at 89.5 mhz interfering with the signal reflecting off a wall behind you. how much farther from the wall should you move so that the interference is fully constructive?

c. newton's third law of motion

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.