You are adding two vectors pointing in opposite directions. How do you find the magnitude of the resultant vector?
A. By adding the magnitudes of the two vectors
B. By subtracting the magnitudes of the two vectors
C. By subtracting the magnitude of the shorter vector from the
magnitude of the longer vector
D. By subtracting the magnitude of the longer vector from the
magnitude of the shorter vector

Which of the following statement is false

Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)

Sound travels slower in colder air that it does in warmer air. make a claim about the effect of air temperature on the speed of sound. support your claim with evidence