1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kifflom [539]
3 years ago
15

Physics A-Level, both of these questions

Physics
1 answer:
podryga [215]3 years ago
8 0
I can only help you with question 7
B is the right answer.
A is wrong because when the angle is critical angle the light leaves medium 1 parallel to the surface.
C is wrong because light reflects only when travelling from a denser to a rarer/less dense medium.speed of light is lower in denser medium.
D is wrong because the frequency of the light doesn't change when travelling from one medium to another.
You might be interested in
Explain why it took so long for psychology to be recognized and what things helped it to get recognized.
Juli2301 [7.4K]
It took so long because at the time there was no way for people to study the behavior formally. im not sure what helped it get recognized but i know wihelm wundt helped get it recongnized. 

sorry i couldnt be much help
4 0
4 years ago
Which statement is true according to Newton's first law of motion?
katrin2010 [14]
C) In the absence of an unbalanced force, an object at rest will stay at rest and an object in motion will stay in motion.

hope this helps and have a great day :)







8 0
3 years ago
Read 2 more answers
During a particular thunderstorm, the electric potential difference between a cloud and the ground is vcloud - vground = 3.50 10
wariber [46]
<span>The change in the electron's potential energy is equal to the work done on the electron by the electric field. The electron's potential energy is the stored energy relative to the electron's position in the electric field. Vcloud - Vground represents the change in Voltage. This voltage quantity is given to be 3.50 x 10^8 V, with the electron at the lower potential. The formula for calculating the change in the electron's potential energy (EPE) is found by charge x (Vcloud - Vground) = (EPEcloud - EPE ground) where charge is constant = 1.6 x 10^-19. Filling in the known quantities results in the expression 1.6 x 10^-19 (3.50 x 10^8) = (EPEcloud - EPEground) = 5.6 x 10^-11. Therefore, the change in the electron's potential energy from cloud to ground is 5.6 x 10^-11 joules.</span>
8 0
3 years ago
1. What causes velocity to change?
tresset_1 [31]
The amount of force an object has will change the velocity
4 0
3 years ago
Read 2 more answers
Which combination of elements will form an ionic bond?
Anna007 [38]

Answer:

C

Explanation:

8 0
3 years ago
Other questions:
  • Carla holds a ball 1.5 m above the ground. Daniel, leaning out of a car window, also holds a ball 1.5 m above the ground. Daniel
    9·2 answers
  • Identify the variables from the experiment below.
    14·2 answers
  • If Earth were twice as far from the sun, the force of gravity attracting the Earth to the Sun would be
    14·1 answer
  • No physical processes have ever been demonstrated which provide a mechanism for the universe to assemble itself.
    14·2 answers
  • A block is launched up a frictionless 40° slope with an initial speed v and reaches a maximum vertical height h. The same block
    15·1 answer
  • Which activity best demonstrates Ernest Rutherford's creativity?A. questioning the correctness of the plum pudding modelB. desig
    14·1 answer
  • Spider-Man and Ned were testing the distance he could shoot his web depending on the angle at which he points his web shooter. H
    14·2 answers
  • Which is hotter, Canopus or Vega? How much brighter?
    11·1 answer
  • 15 POINTS PLZ HELP IM ON A TIMER! IM ON EDGE EXAM
    14·2 answers
  • An object is thrown upward with an initial velocity of 32.1 m/s. When the object reaches it maximum height, it is true of the ac
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!