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
KatRina [158]
3 years ago
14

A yellow train of mass 100 kg is moving at 8 m/s toward an orange train of mass 200 kg traveling in the opposite direction on th

e same track at a speed of 1 m/s. They collide and stick together! What is the final momentum of the new combined train?
A. 100 kgm/s
B. 600 kgm/s
C. 800 kgm/s
D. 80 kgm/s
Physics
1 answer:
Art [367]3 years ago
6 0

Answer:

Let the momentum of the orange train be positive

P = 100 * 8 - 200 * 1 = 600 kg-m/s

P(final) = 600 kg-m/s

P / M = 600 kg-m/sec / 300 kg = 2 m/s    

Answer-B     final momentum = 600 kg-m/s

You might be interested in
Plants have organelles called
Natasha_Volkova [10]

Answer:

chloroplasts

Explanation:

Plants have chloroplasts which are plastids that contains chlorophyll and  photosynthesis takes place.

3 0
4 years ago
A piece of amber is charged by rubbing with a piece of fur. If the net excess charge on the fur is +8.0 nC (+8.0 10-9 C), how ma
Ann [662]

Answer:

Number of electron on the fur will be 5\times 10^{10}electron

Explanation:

We have given net charge on the fur q=8nC=8\times 10^{-9}C

Charge on one electron e=1.6\times 10^{-19}C

Let there are n number of electrons

So ne=8\times 10^{-9}

n\times 1.6\times 10^{-19}=8\times 10^{-9}

n=5\times 10^{10}electron

So number of electron on the fur will be 5\times 10^{10}electron

6 0
3 years ago
Which type of force is the weakest?
laila [671]

Answer:

Explanation:

Ionic bonding is stronger than any of the given intermolecular forces, but is itself NOT an intermolecular force. Ionic bonds are a permanent chemical connection between two atoms, whereas intermolecular forces as a more transient and temporary attraction between independent molecules

The metallic bond is somewhat weaker than the ionic and covalent bond. Ionic bonds are strong electrostatic attraction forces formed between positive and negative ions. This bond is non-directional, meaning that the pull of the electrons does not favor one atom over another.

Ion-dipole forces are the strongest of the intermolecular forces. ... However, hydrogen bonds are still not as strong as ion-dipole interactions. In order from strongest to weakest, the intermolecular forces given in the answer choices are: ion-dipole, hydrogen bonding, dipole-dipole, and Van der Waals forces.

Van der Waals forces are driven by induced electrical interactions between two or more atoms or molecules that are very close to each other. Van der Waals interaction is the weakest of all intermolecular attractions between molecules

4 0
3 years ago
Read 2 more answers
A student graphs power (p) on the vertical axis and time (t) on the horizontal axis. The graph appears to be a hyperbola.
Diano4ka-milaya [45]

Answer: it would be daddy

Explanation:

Because I’m daddy

4 0
3 years ago
A mover uses a ramp to push a stereo into the moving van. The ramp is 3 meters long and 1.5 meters high. What is the ima of this
densk [106]

Mechanical advantage<span> <span>is a measure of the force amplification achieved by using a tool, </span>mechanicaldevice or machine system. Ideally, the device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever. So the ima is 3/1.5 = 2</span>

4 0
4 years ago
Other questions:
  • What happens to light as it moves at an angle into a medium that has a lower index of refraction?
    9·1 answer
  • The transmission of heat requiring the movement of a liquid or a gas is A. transduction. B. convection. C. conduction. D. radiat
    10·2 answers
  • The Standard Kilogram is a platinum-iridium cylinder 39 mm in height and 39 mm in diameter. What is the density of the material?
    9·1 answer
  • An electron volt is: A) the force acting on an electron in a field of 1 N/C B) the force required to move an electron 1 meter C)
    15·1 answer
  • Which of the following graphs correctly represents the relationship between the pressure and the volume of an ideal gas that is
    14·2 answers
  • When a wire that has a large diameter and a length L is connected across the terminals of an automobile battery, the current is
    6·1 answer
  • A -0.00325 C charge q1 is placed 5.62 m from a second charge q2. The first charge is repelled with a 48900 N force. What is the
    9·1 answer
  • A 60 kg person sits in a chair. How much does the earth pull on the person? (Acceleration due to gravity is -10m/s2) F = mxa → F
    11·1 answer
  • The brakes on a 15,680 N car exert a stopping force of 640 N.
    9·1 answer
  • The ammeter shows u that there are 5 amperes of
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!