Answer: B. Title 1 is “Transverse Waves,” and Title 2 is “Longitudinal Waves.”
Explanation:
In transverse waves, the particles of the medium oscillate up and down perpendicular to the direction of motion of wave. crests and troughs are formed. Examples of transverse wave: light wave, wave on a string.
An electromagnetic wave is a transverse wave. It can travel in both space as well as medium. It travels with the speed of light in space and slows down in medium.
In longitudinal wave, the particles of the medium oscillate to and fro parallel to the direction of the motion of wave. Example: sound wave
A sound wave is mechanical wave. It requires medium to travel. A sound wave is longitudinal wave. Sound wave travels forward by compression and rarefaction of the medium.
Thus, the title 1 should be transverse wave and title 2 should be longitudinal wave.
Answer:
- de Broglie wavelength of the bullet is 4.56 x 10⁻³⁴ m
- The value of the wavelength shows that wave nature of matter is insignificant for the bullet because it is larger than particles.
Explanation:
Given;
mass of the bullet, m = 1.9 g = 0.0019 kg
velocity of the bullet, v = 765 m/s
de Broglie wavelength of the bullet is given by;
where;
h is Planck's constant = 6.626 x 10⁻³⁴ J/s
λ is de Broglie wavelength of the bullet
Thus, this value of the wavelength shows that wave nature of matter is insignificant for the bullet because it is larger than particles.
Answer:
The direction of the contact forces acting on a body is not necessarily perpendicular to the contact surface. The resolution of contact forces in two components i.e. perpendicular to contact surface and along surface. Perpendicular component is normal force and parallel component is friction.
Explanation:
solution:
the spring force exerted by spring with spring constant k is given by
where k is spring constant
and x is deformation of spring
in order to calculate word done by the spring
the work done by the spring as it is compressed from x=0 to x=L
inserting the limits x=0 and x=L
we get work done in terms of k and L
Hey there!
<span>Which statement best summarizes Gregor Mendel’s contribution to science?
Mendel is considered the "father of genetics". He did NOT increse the number of peas </span>
<span>produced by a single plant using cross-breeding techniques, discover grean peas and yellow peas, or invent the green pea by cross-breeding thousands of pea plants.
This means your answer is option D.
Hope this helps
Have a great day (:
</span>