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
andrew-mc [135]
3 years ago
14

which of the following can best help you in a risky situation? stay close to the quieter kids have an excuse ready so you can le

ave hang around but don't participate participate only a little to stay safe
Physics
2 answers:
monitta3 years ago
8 0

Answer: Option (b) is the correct answer.

Explanation:

A risky situation is a situation in which there is no idea what the consequence would be as there might be a loss, injury or gain of something. So, basically a risky situation is not predictable.

For example, Ravi didn't attended Juhi's birthday party and when Juhi asked him the reason then Ravi made an excuse that he was out of station at that time due to some office work.

Therefore, we can conclude that out of the given options, have an excuse ready so you can leave best help you in a risky situation.

lesya692 [45]3 years ago
3 0
Have an excuse ready so you can leave 
You might be interested in
Describe the electron transfers that occur in the formation of calcium fluoride from elemental calcium and elemental fluorine.
boyakko [2]

Answer:

Check explanation

Explanation:

In the formation of calcium fluoride we take calcium and fluorine.

in elemental form calcium exist in solid form and fluorine in gaseous form.

formation of compound takes place to complete their octet, in case of calcium  need to remove two electron and need to add one elecron in fluorine to complete their octet so two electron will ransferred from calcium to two fluorine atom.  

3 0
3 years ago
A railroad car of mass 2.50*10^4 kg is moving with a speed of 4.00 m/s. It collides and couples with three other coupled railroa
NemiM [27]

Answer:

(a) 2.5 m/s

(b) 37.5 KJ

Explanation:

(a)

From the law of conservation of momentum, Initial momentum=Final momentum

mV_1+3mV_2=(m+3m)V_f=4mV_f

V_1+3V_2=4V_f and making V_f the subject then

V_f=\frac {V_1+3V_2}{4} and since V_1 is initial velocity of car, value given as 4 m/s, V_2 is the initial velocity of the three cars stuck together, value given as 2 m/s and v_f is the final velocity which is unknown. By substitution

V_f=\frac {4+(3\times2)}{4}=2.5 m/s

(b)

Initial kinetic energy is given by

\frac {mV_1^{2}}{2}+\frac {3mV_2^{2}}{2}=\frac {m(V_1^{2}+3V_2^{2}}{2}=\frac {2.5\times 10^{4}(4^{2}+3(2^{2}))}{2}=350\times10^{3} J= 350 KJ

Final kinetic energy is given by

\frac {4mV_f^{2}}{2}=\frac {4\times 2.5\times 10^{4}\times 2.5^{2}}{2}=312.5\times 10^{3} J=312.5 KJ

The energy lost is given by subtracting the final kinetic energy from the initial kinetic energy hence

Energy lost=350-312.5=37.5 KJ

6 0
3 years ago
Read 2 more answers
Calculate the average linear momentum of a particle described by the following wavefunctions: (a) eikx, (b) cos kx, (c) e−ax2 ,
Maksim231197 [3]

Answer:

a) p=0, b) p=0, c) p= ∞

Explanation:

In quantum mechanics the moment operator is given by

              p = - i h’  d φ / dx

             h’= h / 2π

We apply this equation to the given wave functions

a)  φ = e^{ikx}

        .d φ dx = i k e^{ikx}

We replace

        p = h’ k e^{ikx}

        i i = -1

The exponential is a sine and cosine function, so its measured value is zero, so the average moment is zero

            p = 0

b) φ = cos kx

           p = h’ k sen kx

The average sine function is zero,

          p = 0

c) φ = e^{-ax^{2} }

         d φ / dx = -a 2x  e^{-ax^{2} }

         .p = i a g ’2x  e^{-ax^{2} }

       The average moment is

         p = (p₂ + p₁) / 2

         p = i a h ’(-∞ + ∞)

         p = ∞

6 0
3 years ago
Which of the following is not an example of a polymer?
Gala2k [10]
Concrete is not a polymer which Nylon, and Kevlar are
8 0
3 years ago
Read 2 more answers
YO CAN ANYONE DO THE BLANK COLUMN AND THE QUESTION PART RQ PLS!!
VikaD [51]

Answer:

stryo:  1

wood: 1

ice: 1

brick: 2

aluminum: 2.7

Explanation:

d= mass/ total volume

(fyi: for aluminum, they did the subtraction wrong to find the total volume. it is actually 5 or 5.00)

6 0
3 years ago
Other questions:
  • A book with mass 2.3 kg sits on a table. What is the normal force on the
    8·2 answers
  • (5, 3) and (7, 3) are two coordinate points for a single object on a position-versus-time graph. Assume time is measured in seco
    11·2 answers
  • Explain what distinguishes acute and chronic sports injuries.
    5·2 answers
  • Can someone help me?!!!!!
    11·1 answer
  • Interactive Solution 22.61 offers one approach to problems such as this one. The secondary coil of a step-up transformer provide
    10·1 answer
  • On a trip to Italy, Cheyne rented a car to tour the country. As he turned onto the highway, he noticed that the speed limit was
    13·1 answer
  • Can someone tell me the answer for both of these pleaseeee i need it asap!!! i will give brainlist!!
    15·1 answer
  • 30) When you press a piano key, a hammer strikes a very tight cable to produce a clear tone. How does the cable that produces a
    6·1 answer
  • The formula for average speed is
    9·1 answer
  • List two of the number of strategies you have learned
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!