Speed of sound.. if i am travelling at 1/2 the speed of sound, and there are sounds coming from behind me and in front of me. i understand they will sound at different frequencies to me, but will i still detect them as both travelling at the same speed?

Like a key in a lock, the shape of the. must bind with the. of the recieving neuron

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors

Which accurately compares concave and convex lenses?