Answer: The answer: The car is moving away from you.
Both A and C are true as Car can be moving in line away from you or has component of velocity in opposite direction.
Explanation:The decrease in the frequency of the sound is the result of Doppler's effect. A/c to Doppler's effect the frequency of received sound of source is changed if it is moving relative to the receiver, i.e. the distance between them is changing due to motion.
The general formula of Doppler's Effect is attached as the picture.
In this formula v_D is the velocity of Detector i.e the receiver relative to wind. While v_s is the velocity of source relative to wind and v is the velocity of sound.
The Doppler's effect is not effected by the velocity of wind as the wind itself could not change the distance between the two objects i.e. you and the car. Wind velocity can change the speed of sound and its wavelength but the change does not effect the frequency.
Hence if we assume the car to be moving with velocity v_c and you are stationary
hence the frequency is reduced.
You would want to push both containers, first one and then the other,
with exactly the same strength of push.
The one that takes off slower (with less acceleration from the same
net force) is the one with more mass.
The function of the
crankshaft is to convert the up-and-dwon motion of the piston into rotary motion that can be used to power the vehicle.
I attache an image of a crankshaft.
The pistons are connected to the crank pins ans when the pistons move up an down the crankshaft rotate, and so the recoprating movement of the pistons is converted into rotary motion.
Answer:
A. White light is the absence of all color.
Explanation:
It is false that white light is the absence of all color. In fact, white light is the presence of all colors in the spectrum.
Electromagnetic waves are waves that do not require any material medium for propagation. It is the interaction of electric and magnetic fields.
- The higher frequency electromagnetic waves like the gamma-rays and x-rays have more energy.
- The sun furnishes the universe with electromagnetic energy.
- The higher the wavelength, the lesser the energy of the electromagnetic radiation.
