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
Harlamova29_29 [7]
2 years ago
11

Hi can someone PLEASE HELP ME. I asked this question 3 times already and haven't gotten an answer. I give brainliest to whoever

answers first. I have about 13 minutes. PLEASE HELP!!!!!!

Physics
2 answers:
Serggg [28]2 years ago
7 0
HCl + NaOH -> H2O + NaCl

CaCO3 + KI -> K2CO2 + CaI2

AlF3 + Mg(NO3)2 -> Al(NO3)3 + MgF2
lina2011 [118]2 years ago
6 0
Did you get the answer to it?
You might be interested in
A car slows down uniformly from a speed of 30.0 m/s to rest in 7.20 s
Ede4ka [16]

When acceleration is constant, the average velocity is given by

\bar v=\dfrac{v+v_0}2

where v and v_0 are the final and initial velocities, respectively. By definition, we also have that the average velocity is given by

\bar v=\dfrac{\Delta x}{\Delta t}=\dfrac{x-x_0}{t-t_0}

where x,x_0 are the final/initial displacements, and t,t_0 are the final/initial times, respectively.

Take the car's starting position to be at t_0=0\,\mathrm s. Then

\dfrac{v+v_0}2=\dfrac{x-x_0}t\implies x=x_0+\dfrac12(v+v_0)t

So we have

x=0\,\mathrm m+\dfrac12\left(0\,\dfrac{\mathrm m}{\mathrm s}+30.0\,\dfrac{\mathrm m}{\mathrm s}\right)(7.20\,\mathrm s)=108\,\mathrm m

You also could have first found the acceleration using the equation

v=v_0+at

then solve for x via

x=x_0+v_0t+\dfrac12at^2

but that would have involved a bit more work, and it turns out we didn't need to know the precise value of a anyway.

7 0
3 years ago
List the following types of electromagnetic radiation in order of increasing wavelength:(i) the gamma rays produced by a radioac
Naddik [55]

Answer:

In order of increasing wavelength, the answer is:

(i) The gamma rays produced by a radioactive nuclide used in medical imaging

(iv) The yellow light from sodium-vapor streetlights

(v) The red light of a light emitting diode, such as in a calculator display

(ii) Radiation from an FM radio station at 93.1 MHz on the dial

(iii) A radio signal from an AM radio station at 680kHz on the dial

Explanation:

First, you have to know that the wavelength of a sinusoidal wave traveling at a constant speed is given by:  

                                       λ = \frac{v}{f}

Where λ is the wavelength, v is the constant speed and f is the wave's frequency. In the case of electromagnetic radiation in free space, the constant speed is the speed of light.

From explained above, you can conclude that there is a proportionality relationship between the wavelength and the frequency, they are inversely proportional. That means: the highest frequency will have the shortest wavelength and vice-versa.

So, you have the following types:

(i) The gamma rays produced by a radioactive nuclide used in medical imaging

Frequency : Typically greater than 10^{19} Hz

(ii) Radiation from an FM radio station at 93.1 MHz on the dial

Frequency: 93.1 MHz

(iii) A radio signal from an AM radio station at 680 kHz on the dial

Frequency: 680 kHz

(iv) The yellow light from sodium-vapor streetlights

Frequency: Visible spectrum of approx. 508 - 526 THz

(v) The red light of a light-emitting diode, such as in a calculator display

Frequency: Visible spectrum of approx. 400 - 484 THz

Then, you have to organize them from the highest frequency to the smallest one (decreasing frequency), and as the highest frequency will have the shortest wavelength, you are going to have it organized in an increasing wavelength mode.

Then in order of increasing wavelength, the answer will be:

                                           (i) , (iv), (v), (ii), (iii)

3 0
3 years ago
What is the force of friction acting on the crate? I am offering 30 points.
olganol [36]
I think the answer is C


4 0
2 years ago
A particle of mass 2 g travel a distance of 12 m in a time travel of 2 minute assuming the speed was constant find its kinetic e
balandron [24]

Answer:

0.00001 J

Explanation:

k.e =  \frac{1}{2} m {v}^{2}  \\  =  \frac{1}{2} (0.002) { ( \frac{12}{120} )} ^{2}  \\  = 0.00001j

3 0
3 years ago
Heat is best defined as
Scilla [17]
There can be someone who think answer should be B but temperature isn' proportional with heat. The formula is Q=m.c.t , so it isn't definetly temperature. So answer should be D. Because A and C connect with force etc.

7 0
3 years ago
Other questions:
  • The image shows the displacement of a motorboat. The data table shows the magnitudes of the components of each displacement vect
    11·2 answers
  • A 2 µC charge q1 and a 2 µC charge q2 are 0.3 m from the x-axis. A 4 µC charge q3 is 0.4 m from the y-axis. The distances d13 an
    5·2 answers
  • Molecules of two solid substances actually collide with each other to transfer energy in this method of heat transfer.
    11·2 answers
  • Four breakers of four different sizes are filled with water to the same depth. The temperature of the water is the same in all f
    8·1 answer
  • What are some similarities between heat and temperature? 
    12·2 answers
  • TECHNOLOGY A Lamborghini Aventador accelerates from rest to 100 km / h in 2.9 s. The mass of the car is 1575 kg Calculate the po
    14·1 answer
  • Water is pumped from a reservoir to a tank suspended 12 m above the reservoir. The water flows through the same size pipe throug
    5·1 answer
  • What scenarios best describes how the hawaiian islands formed in the pacific ocean?
    5·1 answer
  • What elements had to be made in a supernova explosion?
    7·1 answer
  • A car is traveling at 120 km/h (75 mph). When applied the braking system can stop the car with a deceleration rate of 9.0 m/s2.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!