Answers
To solve this problem it is necessary to apply Snell's law and thus be able to calculate the angle of refraction.
From Snell's law we know that
Where,
n_i = Refractive indices of each material
= Angle of incidence
= Refraction angle
Our values are given as,
Replacing
Re-arrange to find
Therefore the angle will the beam make with the normal in the glass is 26°
Related Questions
A circular loop of wire has radius 7.80cm . A sinusoidal electromagnetic plane wave traveling in air passes through the loop, with the direction of the magnetic field of the wave perpendicular to the plane of the loop. The intensity of the wave at the location of the loop is 2.03�10?2W/m2 , and the wavelength of the wave is 6.20m .What is the maximum emf induced in the loop? Express your answer with the appropriate units.I stumbled through the formulas I do know for EMF but cant seem to figure out how to get the right answer. Please help and provide explanation! Thanks
Experts in model airplanes develop a supersonic plane to scale, it moves horizontally in the air while it is conducting a flight test. The development team defines that the space that the airplane travels as a function of time is given by the function: e (t) = 9t 2 - 6t + 3 Determine what acceleration the scale airplane has (Second derivative).
When UV light of wavelength 248 nm is shone on aluminum metal, electrons are ejected withmaximum kinetic energy 0.92 eV. What maximum wavelength of light could be used to ejectelectrons from aluminum
Which if, any, of these statements are true? (More than one may be true.) Assume the batteries are ideal. Check all that apply. A battery supplies the energy to a circuit. A battery is a source of potential difference; the potential difference between the terminals of the battery is always the same. A battery is a source of current; the current leaving the battery is always the same.
Answers
Answer:
The tension in the steel beam is 14.72 Newtons.
Explanation:
To calculate the tension in the steel beam when a car is hanging from it, you can use the principles of static equilibrium. In this situation, the gravitational force acting on the car must be balanced by the tension in the steel beam.
First, let's calculate the gravitational force acting on the car:
F_gravity = mass × gravity
Where:
Mass (m) = 1560 kg
Gravity (g) ≈ 9.81 m/s² (standard acceleration due to gravity)
F_gravity = 1560 kg × 9.81 m/s² ≈ 15306 N
Now, this gravitational force is balanced by the tension in the steel beam. Since the beam bends with an angle of 0.055°, we need to consider the vertical component of the tension force.
The vertical component of the tension (T_vertical) can be calculated using trigonometry (considering the angle θ):
T_vertical = T × sin(θ)
Where:
T_vertical is the vertical component of tension.
T is the tension in the beam.
θ is the angle in radians.
We need to convert the angle from degrees to radians:
θ = 0.055° × (π/180) ≈ 0.000959 radians
Now, we can calculate T_vertical:
T_vertical = 15306 N × sin(0.000959) ≈ 14.72 N
So, the tension in the steel beam is 14.72 Newtons.
Answers
Answer:
2.0 amps
Explanation:
Current is the ratio of voltage to resistance:
I = V/R = (3.0)/(1.5) = 2.0
The current in the wire is 2.0 amps.
Answers
Answer:
(a)
(b) Initial velocity of the projectile is 22.54 m/s
(c) Straight line perpendicular to the plane of the car's motion
(d) Parabolic
(e) The initial velocity is 23.04 m/s
Solution:
As per the question:
Velocity of the cart, v = 0.500 m/s
Distance moved by the cart, d = 2.30 m
Now,
(a) The projectile must be fired at an angle of so that it mounts on the top of the cart moving with constant velocity.
(b) Now, for initial velocity, u':
Time of flight is given by;
(1)
where
T = Flight time
D = Distance covered
(b) The component of velocity w.r.t an observer:
Horizontal component,
Vertical component,
Also, the vertical component of velocity at maximum height is zero,
Therefore,
Total flight time, (2)
Now, from eqn (1) and (2):
(c) The shape of the projectile w.r.t an observer will be a straight line perpendicular to the plane of cart's motion.
(d) The shape of the path of the projectile seen by the physics student outside the reference frame of the cart is parabolic
(e) The initial velocity is given by:
u = u' + v = 22.54 + 0.5 = 23.04 m/s
Answers
Answer:
the correct option is C
Explanation:
The intensity of a lamp depends on the power of the lamp that is provided by the current flowing over it, therefore the intensity would increase if we raise the current.
Another way to increase the intensity is to decrease the area with a focusing lens, as the intensity is power over area, decreasing the area increases the power.
When we see the possibilities we see that the correct option is C
Answers
Answer:
The acceleration of the mower will be "4.7 m/s²".
Explanation:
Balance of vertical force will be:
⇒
For wheel to take off at A,
⇒
Hence,
Balancing moments about G will be:
⇒
As we know,
Force, F =
On putting the values, we get
⇒ =
⇒ =
Now,
Acceleration, a =
⇒ =
⇒ =
Answers
Answer:
Seismology.
Explanation:
- Seismology is the beach of physical science that deals with the study of vibrations that comes out from the interior of the earth onto the surface and these vibrations are in the form of seismic waves that are primary, secondary, and surface waves.
- The science of seismology tells about the magnitude and intensity of these waves that lead to planetary vibrations. These waves trigger earthquakes, floods, and even landslides.