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
Nutka1998 [239]
3 years ago
11

Why do you see objects when you shine a flashlight in a dark room?​

Physics
2 answers:
inysia [295]3 years ago
4 0
Because the object is illuminated by the flashlight
Afina-wow [57]3 years ago
3 0

Answer:

We see objects in a dark room due to the emission of light photons which are sensitive to our eyes. Darkness is simply a terminology used to describe the absence of light. Visible light to human is a component of the electromagnetic spectrum. Our eyes have receptors that picks the photons which light releases

Explanation:

You might be interested in
A light-rail commuter train accelerates at a rate of 1.35 m/s. D A 33% Part (a) How long does it take to reach its top speed of
Dennis_Churaev [7]

Answer:

a) 17.49 seconds

b) 13.12 seconds

c) 2.99 m/s²

Explanation:

a) Acceleration = a = 1.35 m/s²

Final velocity = v = 85 km/h = 85\frac{1000}{3600}=23.61\ m/s

Initial velocity = u = 0

Equation of motion

v=u+at\\\Rightarrow 23.61=0+1.35t\\\Rightarrow t=\frac{23.61}{1.35}=17.49\ s

Time taken to accelerate to top speed is 17.49 seconds.

b) Acceleration = a = -1.8 m/s²

Initial velocity = u = 23.61\ m/s

Final velocity = v = 0

v=u+at\\\Rightarrow 0=23.61-1.8t\\\Rightarrow t=\frac{23.61}{1.8}=13.12\ s

Time taken to stop the train from top speed is 13.12 seconds

c) Initial velocity = u = 23.61 m/s

Time taken = t = 7.9 s

Final velocity = v = 0

v=u+at\\\Rightarrow 0=23.61+a7.9\\\Rightarrow a=\frac{-23.61}{7.9}=-2.99\ m/s^2

Emergency acceleration is 2.99 m/s² (magnitude)

6 0
3 years ago
If you wanted to know how big a tiger is, which measurements would you use?
valina [46]

Answer:

meter, kilogram

Explanation:

Here we want to know how big the tiger is. This means that we want to measure its size and possibly its mass.

The size is actually a measure of the length of the tiger, and length is measured in meters.

The mass of an object, instead, is a measure of the "amount of matter" in the substance, and it is measured in kilograms.

The other options are wrong because:

- The second is the unit of time

- The candela is the unit of the luminous intensity

- The mole is the unit of the amount of substance, and it is used for gases

- The ampere is the unit of the current

5 0
3 years ago
Can a machine like a lever, produce a greater force than what you put into it? Can it increase the energy that you put into it?
morpeh [17]

Answer:

yes

Explanation:

the force is multiplied by the levers length of the handle

7 0
3 years ago
Read 2 more answers
Lincoln weighs 400 newtons. What’s his mass rounded to the nearest kilogram? Assume that acceleration due to gravity is 9.8 N/kg
Yanka [14]
Weight equals mass times gravitational acceleration=400N, so mass=400/9.8=41kg approx.
6 0
3 years ago
Read 2 more answers
El resultado de pasar a notación científica la cifra 2 000 000 000 · 10 -15
tensa zangetsu [6.8K]
19,999,985 nomas creo y soy positivo que si es pero puedes ablar ingles
6 0
2 years ago
Other questions:
  • How does mass effect acceleration
    11·1 answer
  • Describe two reasons why an alpha particle is less penetrating than a beta or gamma particle.
    8·2 answers
  • Sug<br>. To repeat the experiment what is it?<br>​
    8·1 answer
  • The motor of a four wheeler traveling along a muddy trail generates an average power of 7.05 104 W when moving at a constant spe
    14·1 answer
  • Calculate the most probable speed of an ozone molecule in the stratosphere
    5·1 answer
  • WORTH 50 POINTS!!!<br> Please help me with questions 1,2,3,4,5,6 and 7 ASAP!
    13·1 answer
  • Which of the following statements about the conservation of momentum is not correct? Momentum is conserved for a system of objec
    7·1 answer
  • In a jigsaw classroom: A. students choose their own groups. B. students have to depend on one another to learn the required info
    11·1 answer
  • Example 4.4
    13·1 answer
  • What is Reverse bump
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!