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
Anettt [7]
3 years ago
15

Help pls it’s urgent giving brainiest!!

Physics
1 answer:
Lorico [155]3 years ago
3 0

Answer:

2nd no. positive.... 3rd no. negitive......

You might be interested in
Current what can do work in an electric device
Serggg [28]
It could help transport important information
5 0
3 years ago
Standing waves are set up on two strings fixed at each end, as shown in the drawing. The two strings have the same tension and m
uysha [10]

The beat frequency produced by the two standing waves is 13 Hz.

<h3>The wavelength of the shorter string</h3>

The wavelength of the shorter string is calculated as follows;

L = \frac{\lambda}{2} \\\\\lambda = 2L\\\\\lambda = \frac{v}{f} \\\\\lambda = \frac{41.9}{225} \\\\\lambda = 0.186 \ m\\\\\lambda = 18.6 \ cm\\\\L= \frac{\lambda }{2} \\\\L = \frac{18.6 \ cm}{2} = 9.3\ cm

<h3>The length of the longer string</h3>

L_2 = 0.58 \ cm \ + 9.3 \ cm\\\\L_2 = 9.88 \ cm \\\\\lambda _2 = 2L_2\\\\\lambda _2 = 2(9.88 \ cm)\\\\\lambda_2 = 19.76 \ cm = 0.1976 \ m

The frequency of the longer string is calculated as follows;

v_1 = v_2\\\\f_2 = \frac{v_2}{\lambda_2} \\\\f_2 = \frac{41.9}{0.1976} \\\\f_2 = 212 \ Hz

<h3>Beat frequency</h3>

The beat frequency produced by the two standing waves is calculated as follows;

F_b = 225 \ Hz \ - \ 212 \ Hz\\\\F_b = 13 \ Hz

Learn more about beat frequency here: brainly.com/question/3086912

8 0
3 years ago
What's manifestation​
TiliK225 [7]

Answer:

Explanation:

the action or fact of showing an abstract idea.


(◑.◑)!

8 0
2 years ago
Read 2 more answers
Debbie places two shopping carts in a cart corral. She pushes the first cart, which then pushes a second cart. What force is bei
ExtremeBDS [4]
Hey there,

Your question states: <span>Debbie places two shopping carts in a cart corral. She pushes the first cart, which then pushes a second cart. What force is being exerted? 

based by looking at this statement above about Debbie, I understand that she (pushed) Cart (A) first. And then, she exerted (Cart B) next. From the option's that are listed above, I only see two. But from my own words, not from the only (two) options above, I see that (Debbie first exerts the second cart on to the first cart). This reason would be because the first cart is already in the corral. So then she would put the second one in there, this would mean that the second one would push the other one in there. Which means that the velocity would also be in half.

I hope you grabbed my answer in there.
~Jurgen</span>
5 0
3 years ago
Read 2 more answers
g In a certain binary-star system, each star has the same mass which is 8.2 times of that of the Sun, and they revolve about the
Mademuasel [1]

To solve this problem it is necessary to apply the concepts related to the Third Law of Kepler.

Kepler's third law tells us that the period is defined as

T^2 = \frac{4\pi^2 d^3}{2GM}

The given data are given with respect to known constants, for example the mass of the sun is

m_s = 1.989*10^{30}

The radius between the earth and the sun is given by

r = 149.6*10^9m

From the mentioned star it is known that this is 8.2 time mass of sun and it is 6.2 times the distance between earth and the sun

Therefore:

m = 8.2*1.989*10^{30}

d = 6.2*149.6*10^6

Substituting in Kepler's third law:

T^2 = \frac{4\pi^2 d^3}{2}

T^2 = \frac{4\pi^2(6.2*149.6*10^9)^3}{2(6.674*10^{-11} )(8.2*1.989*10^30 )}

T=\sqrt{\frac{4\pi^2(6.2*149.6*10^9)^3}{2(6.674*10^{-11} )(8.2*1.989*10^30)}}

T = 120290789.7s

T = 120290789.7s(\frac{1year}{31536000s})

T \approx 3.8143 years

Therefore the period of this star is 3.8years

7 0
3 years ago
Other questions:
  • How many coulombs of positive charge are there in 3.60 kg of plutonium, given its atomic mass is 244 and that each plutonium ato
    10·1 answer
  • A circular solenoid of radius R = 2cm passes through a square loop of wire with 1 turn and sides of length ℓ = 5cm. The solenoid
    8·1 answer
  • A student buys a 5000 Btu window air conditioner for his apartment bedroom. He monitors it for one hour on a hot day and determi
    12·1 answer
  • At the instant when the current in an inductor is increasing at a rate of 0.0740 A/s, the magnitude of the self-induced emf is 0
    5·1 answer
  • . Determine the horizontal and vertical components of reaction at the hinge A and the horizontal reaction at the smooth surface
    14·1 answer
  • When chemical bonds are formed, the process is
    15·2 answers
  • A cart travels 4.00 meters east and then4.00 meters north. determine the magnitude ofthe cart’s resultant displacement.
    7·1 answer
  • Consider the diagram of a pendulum's motion shown above. A pendulum can be used to model the change from potential energy
    6·1 answer
  • Cm<br> 1. Estimate how much water is contained in a round, plastic washing bowl
    6·1 answer
  • A ballplayer catches the ball 4 seconds after throwing it straight up in the air. What speed did he throw it and how high did it
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!