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
mojhsa [17]
3 years ago
7

PLZ HELP

Physics
2 answers:
Sati [7]3 years ago
8 0

Answer:

the index of refraction of the second medium is lower

Explanation:

take an exaple of a light ray from air to water that is optically denser the ray is refracted to the normal thus lowering its index of refraction

xeze [42]3 years ago
3 0

This is what I got on my test

You might be interested in
A 160-m long ski lift carries skiers from a station at the foot of a slope to a second station 40 m above. What is the IMA of th
Dmitrij [34]

Answer:

ima is l/h so 160/40 = 4

Explanation:

4 0
3 years ago
Read 2 more answers
Ice of mass 5 g at 0 °C melts to water at 0 °C.
amid [387]

Answer:

Q=1670J

Explanation:

Mass of ice: m=5g=0.005kg

Latent heat: lambda=3.34×10⁵J/kg

Heat received by ice: Q=m×lambda

Q=0.005×3.34×10⁵=5×334=1670J

5 0
3 years ago
A stone tumbles into a mine shaft and strikes bottom after falling for 4.2 second how deep is the mine shaft
rjkz [21]
4.2*9.8\\41.16

41.16 meters
5 0
3 years ago
A train is moving on a flat, continuous track. label all forces acting upon the object
Firdavs [7]
2nd and third laws of energy
6 0
3 years ago
A heat engine performs (245 + A) J of work in each cycle while also delivering (142 + B) J of heat to the cold reservoir. Find t
Ganezh [65]

Answer:

The value is \eta  =  54.4 \%

Explanation:

From the question we are told that

    The work input is  W = ( 245 + A ) \  J

     The heat delivered is Q =  (142 + B) \  J

      The value of A is  A =  14

        The value of B  is  B  = 72

Generally the efficiency of the heat engine is mathematically represented as

          \eta  =  \frac{W}{Q_t}

Here  Q_t is the total out energy produce by the heat engine and this is mathematically represented as

           Q_t= Q + W

=>         Q_t=  245 + A + 142 + B

=>         Q_t=  390 + A+B

So

               \eta  =  \frac{245 + A }{390 + A+ B}

=>          \eta  =  0.544

=>          \eta  =  0.544 *100

=>          \eta  =  54.4 \%

5 0
3 years ago
Other questions:
  • How many meters do you cover in a 10 km (10-K) race? 
    7·1 answer
  • Which of the following statements is false? In solids, the particles do not move around or change position; they can only vibrat
    11·2 answers
  • If an element has 7 valence electrons, how many dots will be in the elements dot diagram
    9·1 answer
  • As you sit outside, the sound of a siren becomes lower in pitch. Is the emergency vehicle moving away from or towards you? expla
    8·1 answer
  • An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad/s ). If a particular disk is spun at 235
    9·1 answer
  • Why is the restoring force in Hooke's law a negative value?
    12·2 answers
  • Mia is driving at 15m/s. she accelerates for 6sec and reaches 25m/s what is her acceleration
    10·1 answer
  • Por una tubería de 0.06 m de diámetro circula agua con una velocidad desconocida, al llegar a la parte estrecha de la tubería de
    15·1 answer
  • Hey I need help can someone help me out, please
    12·1 answer
  • Quit my nose so you have a bad guy really good guy​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!