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
frosja888 [35]
3 years ago
5

Hai xe chuyển động trên cùng một đoạn đường , khi xe (1) ở A thì xe (2) ở B phía trước với AB=5km . Xe (1) đuổi theo xe (2) . Tạ

i C cách B một đoạn BC=10km thì xe (1) đuổi kịp xe (2) . Tìm tỉ số vận tốc của hai xe
Physics
1 answer:
12345 [234]3 years ago
4 0

Answer:

b

Explanation:

because it shows you it

You might be interested in
A ball rolls down an incline with an acceleration of 10 cm/s^2. If it starts with an initial velocity of 0 cm/s and has a velocy
11Alexandr11 [23.1K]
Given a = 10 cm/s²
          u = 0 cm/s
          v = 50 cm/s
we know that 
         v²=u²+2aS
        2500=2×10×S
        2500÷20 = S
        S= 125 cm
The ramp is 125 cm
8 0
3 years ago
The unusually bright centers found in some galaxies are called ______.
Nimfa-mama [501]
<span>Active Galactic Nuclei.</span>
4 0
3 years ago
friction force is the opposition to the motion of surfaces sliding across each other. what is one factor that affects the amount
ruslelena [56]

Answer

Nature of the surfaces.


Explanation

Friction is the the force that opposes motion between two surfaces that are in relative motion. If two objects are in contact, one of it or both must be in motion for friction to exist.

Friction is affected by a number of factors.

One is the weight of the object. The more the weight of the object the higher the friction between it and the surface.

The other factor is the nature of the surfaces. Rough surfaces contribute to high friction while smooth surfaces reduces the friction between surfaces.  

3 0
3 years ago
Why must the height of the meniscus in the graduated cylinder match the height of the water in the tub when measuring volume?
galben [10]

Answer:

See explanation

Explanation:

First, in order for you to understand, remember the basic concept of meniscus in graduated cylinder.

<em>"The meniscus is the curve seen at the top of a liquid in response to its container. The meniscus can be either concave or convex, depending on the surface tension of the liquid and its adhesion to the wall of the container".</em>

Now, according to this definition, and for water, the reading of the volume must be donde at the bottom of the curve of the meniscus. This is because the water  gives a concave curve.

If you read it and matches the height of water, you are getting two results:

One, get an accurate value or volume, because it's been done at eye level.

The second fact is that when you do the reading this way, The total pressure is made equal to the atmospheric pressure by adjusting the height of the cylinder until the water level is equal.

8 0
3 years ago
What is the formula for atmospheric pressure.
zepelin [54]
P = Pb [Tb/(Tb + Lb (h -hb))] just search it up in the web
8 0
3 years ago
Other questions:
  • Mass = 567.5 g Volume = 50.0 cm3 What is the density of lead? 1.135 g/cm3 11.35 g/cm3 113.5 g/cm3 1,135 g/cm3
    11·1 answer
  • A car slows down at -5.00 m/s^2 until it comes to a stop after traveling 15.0 m. What was the initial speed of the car?
    10·1 answer
  • ______ carries amino acids to the _____.
    5·2 answers
  • The velocity of sound in air saturated with water vapour at 30°C
    10·1 answer
  • Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical
    11·1 answer
  • What is the frequency of a wave that has a wavelength of 20 cm and a speed of 10 m/s
    8·1 answer
  • Mention the digestive enzymes produced in the stomach and food nutrients they act on​
    11·1 answer
  • A 2.0-kg cart is rolling along a frictionless, horizontal track towards a 1.8-kg cart that is held initially at rest. The carts
    9·1 answer
  • Olympic gold medalist Michael Johnson runs one time around the track 400 meters in 38 seconds what is his displacement what is h
    13·1 answer
  • A country is deciding what to do about pollution glven off by power plants.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!