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
o-na [289]
3 years ago
9

Can you help me ASAPPP please help me

Physics
1 answer:
AveGali [126]3 years ago
6 0

Answer:it is a

Explanation hope this helps .

You might be interested in
A light ray incident from medium 1 to medium 2, where n1>n2. When the incident angle exceed the critical angle ac, the refrac
vovikov84 [41]

Explanation:

(a)

Critical angle is the angle at the angle of refraction is 90°. After the critical angle, no refraction takes place.

Using Snell's law as:

n_1\times {sin\theta_i}={n_2}\times{sin\theta_r}

Where,  

{\theta_i}  is the angle of incidence

{\theta_r} is the angle of refraction = 90°

{n_2} is the refractive index of the refraction medium

{n_1} is the refractive index of the incidence medium

Thus,

n_1\times {sin\ \theta_{critical}}={n_2}\times{sin\ 90^0}

The formula for the calculation of critical angle is:

{sin\theta_{critical}}=\frac {n_2}{n_1}

Where,  

{\theta_{critical}} is the critical angle

(b)

No it cannot occur. It only occur when the light ray bends away from the normal which means that when it travels from denser to rarer medium.

7 0
3 years ago
Describe what it means if a chemical or physical property is periodic
vesna_86 [32]
It means that you consider the elements as a list organized by atomic number, the property is seen to repeat over and over as you move through that list.
6 0
3 years ago
The geocentric theory states that the center of the universe is
lilavasa [31]

i sorry i thought of geocentric as something else it appears that the earth was the center

8 0
3 years ago
Lionel makes a graphic organizer to compare the electric field around a positive charge with the electric field around a negativ
krek1111 [17]
X- points away from the charge
y- points in the direction of the force on the positive charge
z- points toward the charge
6 0
3 years ago
Read 2 more answers
The kicker now kicks the ball with the same speed as in the number of 4,but at 60.0°from the horizontal or 30.0° from the vertic
stealth61 [152]

Answer:

Explanation:

1) The time of flight equation for projectile motion can be used here to find total time in air.

t = 2vsin∅ / g

where v is speed, Ф is launch angle

t = 2×4×sin 60 / 9.8

t = 0.71 seconds

2) Distance where it hit the ground is called as range and has the following standard equation

D = v² sin2Ф/g

D = 4²sin 2×60 / 9.8

D = 1.41m

3) Maximum elevation is maximum time reached

h = v² sin²Ф / 2g

h = 4²sin² 60 / 2*9.8

h = 0.61 m

3 0
3 years ago
Other questions:
  • Sally travels by car from one city to another. She drives for 26.0 min at 83.0 km/h, 52.0 min at 41.0 km/h, and 45.0 min at 60.0
    8·1 answer
  • Surface currents are driven by _____.<br> wind<br> density<br> salinity<br> temperature
    5·2 answers
  • suppose it takes 500 years to form 2 cm of new soil without erosion. Of a farmer need at least 35 cm of soil to plant a particul
    8·1 answer
  • When a chemical reaction occurs with only one substance, what happens to the atoms of that substance?
    7·2 answers
  • The three scientists credited with using all available data and correctly determing the sturcture of dna from many years of prev
    13·1 answer
  • If you put 3.27 moles of an ideal
    15·2 answers
  • An 85 kg man and his 35 kg daughter are sitting on opposite ends of a 3.00 m see-saw. The see-saw is anchored in the center. If
    15·1 answer
  • 3.Regular physical activity can help prevent disease by
    11·1 answer
  • What amount of heat is absorbed by 257 g of water heated from 18° C to 63° C? The specific heat of water is 4.18 J/g°C.
    12·1 answer
  • at a certain moment, an object has an amount of 200 of motion energy and 400 of gravitational potential energyThe object is also
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!