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
rosijanka [135]
3 years ago
13

Which statement is true if the refractive index of medium A is greater than that of medium B?

Physics
1 answer:
allsm [11]3 years ago
7 0

Answer:

I think it is C

Explanation:

You might be interested in
A light platform is suspended from the ceiling by a spring. A student with a mass of 90 kg climbs onto the platform. When it sto
Ilya [14]
Refer to the diagram shown.

When the student climbs onto the platform, the spring stretches by 0.82 m to reach the equilibrium position.
The mass of the student is m = 90 kg, so his weight is
mg = (90 kg)*(9.8 m/s²) = 882 N

By definition, the spring constant is
k = (882 N)/(0.82 m) = 1075.6 N/m

When the spring is stretched by x from the equilibrium position, the restoring force is
F = - k*x.

If damping is ignored, the equation of motion is
F = m * acceleration
or
m \frac{d^{2}x}{dt^{2}} = -kx \\ \frac{d^{2}x}{dt^{2}} + \frac{k}{m} x = 0

Define ω² = k/m = 11.751 => ω = 3.457.
Then the solution of the ODE is
x(t) = c₁ cos(ωt) + c₂ sin(ωt)

x'(t) = -c₁ω sin(ωwt) + c₂ω cos(ωt)
When t=0, x' =0, therefore c₂ = 0

The solution is of the form
x(t) = c₁ cos(ωt)
When t = 0, x = 0.32 m. Therefore c₁ = 0.32

The motion is
x(t) = 0.32 cos(3.457t)
The single amplitude is 0.32 m, and the double amplitude is 0.64 m.

Answer: 
0.32 m (single amplitude), or
0.64 m (double amplitude)

6 0
3 years ago
Sanjay is making plans for his Saturday afternoon. He can choose a health-enhancing activity like lifting weights, or he can cho
Bezzdna [24]

Answer: Sanjay can burn 100 more calories every 30 minutes if he chooses to lift weights instead of watching tv

Explanation: 133-33= 100 calories (says in article and i just answered it)

7 0
3 years ago
Carole is surprised when she makes an emergency stop and the tissue box that had been in the back window of her car hits the bac
krek1111 [17]
B An object in motion tends to stay in motion .
4 0
3 years ago
Read 2 more answers
Among the alkali earth metals, the tendency to react with other substances
padilas [110]
Answer D
In alkali earth metals reacrivity increases from top to bottom (opposite of b)
This is because as you go down, the electron shells increase by 1 shell. The farther away a shell is from the nucleus, the higher its tendency to react.
D is true because the more reactive an alkali metal is, the more vigorous the reaction will be with water.
4 0
3 years ago
Read 2 more answers
A green plant absorbs light a frog eats flies these are both examples of how organisms
Llana [10]
I think I can answer your question since I've worked on this before. Your answer should be obtain energy. If your answer choices were; obtain energy escape predators produce offspring excrete waste
7 0
3 years ago
Other questions:
  • Which formula can be used to find the x-component of the resultant vector?
    9·1 answer
  • Using the projectiles equations for y and x at what second does the ball have a vertical velocity of -39.2 m/s^2
    8·1 answer
  • You toss an apple across the room to a friend. Which of the following statements is true about the apple as it flies across the
    8·2 answers
  • For the wave of light you generated in the Part B, calculate the amount of energy in 1.0 mol of photons with that same frequency
    12·1 answer
  • 4. The bar has cross-sectional area A and modulus of elasticity E. If an axial force F directed toward the right is applied at C
    6·1 answer
  • Runner A is initially 5.7 km west of a flagpole and is running with a constant velocity of 8.8 km/h due east. Runner B is initia
    12·1 answer
  • An electron and a proton are both released from rest, midway between the plates of a charged parallel-plate capacitor. The only
    12·1 answer
  • Please help I have no idea how to do this
    8·2 answers
  • Bài 1. Một vật được đặt trên một mặt phẳng nghiêng hợp với mặt phẳng nằm ngang một góc  = 300.
    8·1 answer
  • A ball is fired from a cannon from the top of a cliff as shown below. Which of the paths 1 - 5 would the cannonball most closely
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!