It should be the B
Low frequency and long wavelength
It’s c, the toy car changes direction
Answer: Zero.
Explanation:
By the first Newton's law, we know that:
every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
Now, we know that the car is moving with constant speed, then there is no net force acting on the car, which means that the car is already in equilibrium.
Then if we add one force to the situation, the car will not be anymore in equilibrium.
The correct option is zero.
12/24=4x3/8x3
=4/8
4/8 is not correct ans it is less than 5/8
B) 3/4
multiply and divide it by 2 so the denominator should be equal to 8
3x2/4x2=6/8
6/8 is greater that 5/8 hence b is correct option
C)15/24=5/8 which is equalt to 5/8 hence it is not correct answer
D)4/12=1/3 it is also less than 5/8
The line spectrum is also known as the emission light spectrum.
The ELS shows what colors of light are released when an element(or a specific compoud) is burned or electricity is sent through the gaseous form.
The ELS can be used to identify elements because each element has a different ELS. Elements like Tungsten produce a white light when burned, so their ELS has many line close together. This is why tungsten was used for lightbulbs.