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
vampirchik [111]
3 years ago
7

How do the numbers of atoms of each element compare before and after the reaction? Why do you think this is?

Physics
2 answers:
Oduvanchick [21]3 years ago
6 0

Answer:

they want to be

Explanation:

timofeeve [1]3 years ago
5 0
Bc they want to be and they have the choose
You might be interested in
The first part of the brain to be stimulated and affected by alcohol is the
KATRIN_1 [288]
The hippocampus !!!!
3 0
3 years ago
How much energy (in kW-h) does a 900 Watt stove use in a week if it is used for 1.5 hours each day?
ioda

Answer:

9.45 kWh

Explanation:

Energy = Power × time

E = 900 W × (1.5 h/day × 7 day)

E = 9450 Wh

E = 9.45 kWh

3 0
3 years ago
How fast should a girl of 35 kg run so that her kinetic energy becomes 700J<br> of?
Kipish [7]
V^2 = 700J/0.5*35kg

V = square root of 40

v = 6.324 m/s
6 0
3 years ago
Read 2 more answers
A submarine is 2.99 ✕ 102 m horizontally from shore and 1.00 ✕ 102 m beneath the surface of the water. A laser beam is sent from
Vsevolod [243]

Answer:

a The diagram of the situation is shown on the first uploaded image

b the angle of  incidence  beam striking the water is \theta = 49.63^o

c  the angle of  refraction  beam striking the water is r = 59.7^o

d The angle the refracted beam make with respect to the horizontal is = 30.3^o

e The height of the target above sea level is  

                   h= 125.05m

Explanation:

From the diagram we see that the angle of the beam striking the water is

                   tan \theta = \frac{100}{85}

                        \theta = tan^{-1}(\frac{100}{85} )

                           = 49.63^o

According to Snell's law

                   \mu_{water} *sin(i) = \mu_{air}  *sin(r)

Where \mu_{water } is the refractive index of water =  1.333

           i is the angle of incidence

          \mu_{air} is the refractive index of air  = 1

            r is the angle of refraction

 Substituting values accordingly

          1.33 * sin (40.37) = 1 * sin(r)

    Making r the subject of the formula

                       r = sin^{-1}(\frac{1.333 *sin(40.37)}{1})

                          = 59.7^o

looking at the diagram we can see that to  obtain the angle the refraction beam makes with the horizontal   by subtracting the angle refraction from 90°

                 i.e  90 -59.7 = 30.3 °

From the diagram we see that the height  target above sea level can be obtained by this relation

                   tan \theta = \frac{h}{214}\\

Where h is the is the height

                   tan(30.3) = \frac{h}{214}

                         h = 214 * tan (30.3)

                            =125.05m

           

4 0
3 years ago
Which image shows an example of the strong nuclear force in action?
dusya [7]

i think this is the incomplete page that you are showing but the answer is

:-

<h2><u>B</u></h2>
6 0
3 years ago
Other questions:
  • When used in physical therapy, a diathermy machine gives the sensation of "deep heat" in the tissue being treated.
    8·1 answer
  • Which of these is closest to the age of our solar system?
    9·1 answer
  • A bat strikes a 0.145 kg baseball. Just before impact, the ball is traveling horizontally to the right at 40.0 m/s; when it leav
    10·1 answer
  • What happens when the temperature of the air cools?
    13·1 answer
  • Carmen is heating some water and trying to measure the temperature of water using a Celsius thermometer. Which measurement can s
    7·2 answers
  • What color of light has the shortest wavelength
    14·1 answer
  • Can anyone help me with this assignment? please and thank you
    11·1 answer
  • 2. Classify Identify the following materials as thermal conductors or
    11·1 answer
  • Find the resultant force And angle
    11·1 answer
  • Which best explains horatio’s error? magnetism is not produced by electric currents unless the wire is coiled. the magnetic fiel
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!