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
zheka24 [161]
2 years ago
6

A car with a mass of 1.1 × 103 kilograms hits a stationary truck with a mass of 2.3 × 103 kilograms from the rear end. The initi

al velocity of the car is +22.0 meters/second. After the collision the velocity of the car is -11.0 meters/second. What is the velocity of the truck after this elastic collision?
A.+13 meters/second
B.+20 meters/second
C.+15.7 meters/second
D.+7.5 meters/second
E.+9.8 meters/second
Chemistry
2 answers:
LenaWriter [7]2 years ago
7 0

Answer:

c

Explanation:

FOR PLATO

d1i1m1o1n [39]2 years ago
6 0
The answer is C : 15.7 m/s
Use the idea of : momentum before collision = momentum after collision

Before collision;
For car:mass=1.1×10^3, velocity=22
For truck:mass=2.3×10^3, velocity=0
After collision;
For car:mass=2.3×10^3, velocity=-11
For truck:mass=2.3×10^3, velocity=V
(1.1×10^3 × 22) + (2.3×10^3 × 0) = (1.1×10^3 × -11) + (2.3×10^3 × V)
24200 = -12100 + 2.3×10^3V
2.3×10^3V = 36300
V = 15.7 m/s
You might be interested in
Sarah rolls a ball in the grass. The ball starts off moving quickly, starts to slow down, and eventually stops. Using the words
gogolik [260]

Answer:

hi 5th grader, stop trying to cheat :)

Explanation:

4 0
2 years ago
Which of the following best describes magnetic fields
BigorU [14]

Well the multiple choices for this question would be helpful, but from my own knowledge I would say:

Magnetic fields have north and south magnetic poles.

Magnetic fields have various characteristics which includes; they originate from the north poles and flow towards the south poles, they are exhibited in the form of magnetic field lines. Magnetic fields lines never cross one another,they all have the same strength and seek the path of least resistance between opposite magnetic poles etc.

3 0
2 years ago
What is the name of cells that have the ability to develop into different<br> kinds of cells?
ser-zykov [4K]

Answer:

stem cells

Explanation:

hope it helps

8 0
2 years ago
If water were a linear (not bent) molecule like co2, electrostatic interactions between water molecules would be much weaker. wh
Ksenya-84 [330]

Answer;

The partial negative charge on oxygen would stick out less and be less able to participate in hydrogen bonding.

Explanation;

Water is a polar molecule because the electrons are not shared equally, they're closer to the oxygen atom than the hydrogen.

-Normally, the water molecule is a bent shape because of the pair of lone electrons - they repulse each other and exert a compression to the hydrogen atoms at a slight 104º angle. It is a bent molecular geometry that results from tetrahedral electron pair geometry.

-The 2 lone electron pairs exerts a little extra repulsion on the two bonding hydrogen atoms to create a slight compression to a 104 degrees bond angle. Therefore, the water molecule is bent molecular geometry because the lone electron pairs.

Thus, If water were a linear molecule like co2, electrostatic interactions between water molecules would be much weaker, then the partial negative charge on oxygen would stick out less and be less able to participate in hydrogen bonding.

3 0
2 years ago
Explain the purpose and function of a gene.
Kryger [21]

Function

Genes decide almost everything about a living being. One or more genes can affect a specific trait. Genes may interact with an individual’s environment too and change what the gene makes.

Genes affect hundreds of internal and external factors, such as whether a person will get a particular color of eyes or what diseases they may develop.

Some diseases, such as sickle-cell anemia and Huntington’s disease, are inherited, and these are also affected by genes.

Purpose

The purpose of genes is to store information.

Each gene contains the information required to build specific proteins needed in an organism.

Hope this helps !!

8 0
3 years ago
Other questions:
  • Suppose you have a liquid solution containing two components, acetone and nonane. The boiling point of pure acetone is 56 C and
    13·1 answer
  • what volume of a 0.149 m potassium hydroxide solution is required to neutralize 17.0 ml of a 0.112 m hydrobromic acid solution?
    15·1 answer
  • Two different samples of solid iron are shiny, can be made into wire, and can rust when exposed to water. Why do the two samples
    14·2 answers
  • how many moles of water will be produced from the complete combustion of 24.6 moles of ethane according to the following reactio
    7·1 answer
  • Why do samples of platinum and copper have the same extensive properties?
    11·1 answer
  • Which of the gas laws takes into account the forces of attraction between molecules based on the characteristics of the gas? *
    11·1 answer
  • A sample of gas at 15 atmospheres and 445 K is cooled to 250 K. What pressure will the gas be under after it is cooled? Round to
    11·1 answer
  • Which best describes how food availability affects the carrying capacity of an area
    9·1 answer
  • In a Lewis structure, why must pairs of unshared of lone pairs if dots be placed around the outside of some of the atoms
    12·1 answer
  • The first excited state of Ca is reached by absorption of 422.7 nm light. Find the energy difference (kJ/mole) between the groun
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!