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
Yanka [14]
4 years ago
6

I need help finding the answers to number 4

Physics
1 answer:
erastova [34]4 years ago
5 0
It is B. if i'm not mistaking 
You might be interested in
the speed of light in a certain medium is 0.6c. find critical angle , if the index of refraction is 1.67​
baherus [9]

Answer:

\theta_c = 36.78^o

Explanation:

The relationship between the refractive index and the critical angle is given as follows:

\eta = \frac{1}{Sin\ \theta_c} \\\\Sin\ \theta_c = \frac{1}{\eta}\\\\\theta_c = Sin^{-1}(\frac{1}{\eta} )

where,

η = refractive index = 1.67

θc = critical angle =?

Therefore,

\theta_c = Sin^{-1}(\frac{1}{1.67} )

\theta_c = 36.78^o

4 0
3 years ago
Which particle needs to be added to this equation to show that the total numbers of neutrons and protons are not changed by the
Ivan

Answer:

C.

Explanation:

8 0
3 years ago
Read 2 more answers
a traffic light at an intersection is hanging from two wires of equal length making angles of 10 degrees below the horitzontal.
aleksandrvk [35]

The tensions in the wires at the given angle of inclination is determined as 434.1 N.

<h3>Tension on the wire</h3>

The tension in the wires is calculated as follows;

T = Wsinθ

where;

  • T is tension in each wire
  • W is weight of the traffic light

T = 2500 x sin(10)

T = 434.1 N

Thus, the tensions in the wires at the given angle of inclination is determined as 434.1 N.

Learn more about tension here: brainly.com/question/918617

#SPJ1

3 0
2 years ago
In principle, the motion of a simple pendulum and an object on an ideal spring can both be used to provide the basic time interv
stich3 [128]

Answer:

Explanation:

The time period of the pendulum containing simple pendulum is given by

T = 2\pi \sqrt{\frac{L}{g}}

where, L is the length of the pendulum and g is the value of acceleration due to gravity.

The time period of the clock using the spring mechanism is given by

T = 2\pi \sqrt{\frac{m}{k}}

where, m is the mass of the block attached to the spring and k is the spring constant.

here we observe the time period of the pendulum depends on the value of acceleration due to gravity. The value of acceleration due to gravity decreases as we go on the heights that means when the clock is taken to the mountain, the value of g decreases and thus, the value of time period increases and the clock runs slow.

So, the clock containing the spring system gives the accurate reading rather than the clock containing simple pendulum.

5 0
3 years ago
Read 2 more answers
A balloon contains helium gas. Which applies to the volume of the gas in the balloon when pressure is increased at constant temp
svetlana [45]

Answer:

the volume of the gas decreases

Explanation:

As a balloon rises through the atmosphere, the air pressure around it decreases and the balloon expands.

Good luck!

8 0
3 years ago
Other questions:
  • I need help in my physics class and show me how it’s done
    15·1 answer
  • We fully submerge an irregular lump of material in a certain fluid. The fluid that would have been in the space now occupied by
    15·1 answer
  • Equations to use: v= λ ∙ f v=d/t
    11·1 answer
  • What produces virtual and real images
    12·1 answer
  • What is the mass of erath
    13·1 answer
  • a) If a proton moved from a location with a 5.0 V potential to a location with 7.5 V potential, would its potential energy incre
    13·1 answer
  • What is the magnitude of the gravitational force exerted by earth on a 9.0-kg brick when the brick is in free fall?
    15·1 answer
  • Esercizio 1
    14·1 answer
  • You have to make it balanced.
    7·1 answer
  • The oscillation of the 2.0-kg mass on a spring is described by x = 3.0 cos (4.0 t) where x is in centimeters and t is in seconds
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!