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
Tju [1.3M]
3 years ago
12

What would be the first thing you would do if your clothes caught fire while working in a laboratory? select one of the options

below as your answer:
a. call out to your teacher
b. drop and roll on the floor to extinguish the fire
c. run towards a source of water to extinguish the fire
Physics
1 answer:
Ksivusya [100]3 years ago
3 0
<span>c. run towards a source of water to extinguish the fire </span>
You might be interested in
How to find moment of inertia of hemisphere
gtnhenbr [62]
<span>It’s 2/5 MR^2 where M is mass and R is the radius of the bas</span>
6 0
3 years ago
What is the momentum of a photon having the same total energy as an electron with a kinetic energy of 100 keV?
statuscvo [17]

Answer:

The momentum of the photon is 1.707 x 10⁻²² kg.m/s

Explanation:

Given;

kinetic of electron, K.E = 100 keV = 100,000 eV = 100,000  x 1.6 x 10⁻¹⁹ J = 1.6 x 10⁻¹⁴ J

Kinetic energy is given as;

K.E = ¹/₂mv²

where;

v is speed of the electron

K.E = \frac{1}{2}mv^2\\\\mv^2 = 2K.E \\\\v^2 = \frac{2K.E}{m} \\\\v = \sqrt{\frac{2K.E}{m}} \\\\but \ momentum ,P = mv\\\\(v)m = (\sqrt{\frac{2K.E}{m}})m\\\\P_{photon} =  (\sqrt{\frac{2K.E}{m_e}})m_e\\\\P_{photon} =  (\sqrt{\frac{2\times 1.6\times 10^{-14}}{9.11\times10^{-31}}})(9.11\times 10^{-31})\\\\P_{photon} = 1.707 \times 10^{-22} \ kg.m/s

Therefore, the momentum of the photon is 1.707 x 10⁻²² kg.m/s

6 0
3 years ago
Which objects are opaque? Check all that apply.
Vinvika [58]
<span>textbook
track shoes
</span><span>basketball</span>
7 0
3 years ago
Read 2 more answers
PLS HELP QUICK!!!!!!!!
vazorg [7]
Position 1 I believe because that is when the potential energy is released on the downfall
5 0
3 years ago
Read 2 more answers
A wire of length 5mm and Diameter 2m extends by 0.25 when a force of 50N was use. calculate the
bazaltina [42]

Answer and Explanation:

Data provided in the question

Force = 50N

Length = 5mm

diameter = 2.0m = 2\times 10^{-3}

Extended by = 0.25mm = 0.25\times 10^{-3}

Based on the above information, the calculation is as follows

a. The Stress of the wire is

= \frac{force\ applied}{area\ of \ circle}

here area of circle = perpendicular to the are i.e cross-sectional  i.e

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

= \frac{\pi(2\times 10^{-3})^2}{4}

Now place these above values to the above formula

= \frac{4\times 50}{\pi\times 4 \times 10^{-6}} \\\\ = \frac{50}{\pi}

= 15.92 MPa

As 1Pa = 1 by N m^2

So,

MPa = 10^6 N m^2

b. Now the strain of the wire is

= \frac{Change\ in\ length}{initial\ length} \\\\ = \frac{0.25\times 10^{-3}}{5}

= 5 \times 10^{-5}

3 0
3 years ago
Other questions:
  • Suppose that you lift four boxes individually, each at a constant velocity. The boxes have weights of 3.0 N, 4.0 N, 6.0 N, and 2
    10·1 answer
  • Atoms that are large and unstable are likely to undergo
    14·1 answer
  • A car speeds up from rest to +16 m/ s in 4s. calculate the acceleration
    15·2 answers
  • Reflections from a thin layer of air between two glass plates cause constructive interference for a particular wavelength of lig
    13·1 answer
  • A hair dryer is a pump for air. Do a battery and a Genecon act like pumps for charge?
    8·2 answers
  • The acceleration due to gravity is lower on the Moon than on Earth. Which one of the following statements is true about the mass
    11·2 answers
  • A compact car has a mass of 1300 kg . When empty, the car bounces up and down on its springs 1.5 times per second. What is the c
    12·1 answer
  • In what type of wave is the vibration perpendicular to the direction of travel of the wave
    7·1 answer
  • What happens to the acceleration of a ball as it is dropped off a clift?
    6·1 answer
  • What was David Berkowitz best known for? How did arson play a role in his past?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!