Wavelength = (speed) divided by (frequency) = 10/0.5 = <span>20 </span>
Answer: D Medium B is denser than Medium A because light bends more in Medium B.
Explanation: The more the light bends the less energy it has
Answer:
The tire fills up just like anything else that holds air when u pump a ball or tire up it fills all the way up cause it is a small confined space and after filling it with air the atoms of the air fill the tire up
Explanation:
Speed is scalar, meaning it's only going to be like 74 mph, doesn't matter which direction. Velocity is a vector, meaning it has direction. You can go -74mph when talking about velocity, not speed.
Answer
given,
mass of the dragster = 835 Kg
initial speed, u = 0 m/s
final speed, v = 110 km/h = 110 x 0.278 = 30.58 m/s
time, t = 0.90 s
a) Change in momentum
Δ P = m v - m u
Δ P = 835 x ( 30.58 - 0 )
Δ P = 25534.3 kg.m/s
b) average force exerted on the car
change in momentum = Force x time
25534.3 = F x 0.9
F = 28371.44 N
c) The exerted force is due to friction because the motion of the dragster is because of friction.
