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
larisa [96]
3 years ago
11

Which of the following represents a fully plastic collision? 1. Two billiard balls hit each other then move in opposite directio

ns. 2. Two train cars hit then detach. 3. A ball hits a wall with no loss of energy. 4. A bullet hits a block and becomes embedded. 5. None of these.
Physics
1 answer:
Nutka1998 [239]3 years ago
3 0

Answer:

Option (4)

Explanation:

There are two types of collision.

Perfectly elastic collision: the collision in which the momentum and kinetic energy is conserved. There is no loss of energy in other forms of energy.

Perfectly plastic collision: The collision in which the momentum is conserved and kinetic energy is not conserved. The two bodies stick after the collision.

Here, the bullet hits the block and then embedded in the block, it is the example of plastic collision.

You might be interested in
What are two examples of population distribution?
Alex777 [14]
Three basic types of population distribution within a regional range are (from top to bottom) uniform, random, and clumped.
7 0
3 years ago
Select the false statement. A. Only materials that have never been part of a living thing can be recycled in nature. B. Matter f
astra-53 [7]

Option A is the false statement.

Only materials that have never been part of a living thing can be recycled in nature.

In actual all living and non living thing can be recycled in nature.

3 0
3 years ago
Water changes shape to fill the shape of its container. What is the best explanation for this?
jeka57 [31]
D. The molecules in water are constantly moving.

They are able to do this because they move around to take whatever shape of the container.
6 0
3 years ago
Read 2 more answers
A 19.12 g mixture of Ca(NO3)2 and KCl is dissolved in 149 g of water. The freezing point of the solution was measured as −5.77 ∘
hichkok12 [17]

Answer:

The mass percentage of calcium nitrate is 31.23%.

Explanation:

Let the the mass of calcium nitrate be x and mass of potassium chloride be y.

Total mass of  mixture = 19.12 g

x + y = 19.12 g..(1)

Mass of solvent = 149 g = 0.149 kg

Freezing point of the solution,T_f = -5.77 °C

Molal freezing constant of water = 1.86 °C/m =1.86 °C/(mol/kg)

The van't Hoff factor contribution by calcium nitrate is 3 and by potassium chloride is 2.So:

i = 3

i' = 2

Freezing point of water = T = 0°C

\Delta T_f=T-T_f=0^oC-(-5.77^oC)=5.77^oC

\Delta T_f=i\times K_f\times m

Molality=m(mol/kg)=\frac{\text{Moles of solute}}{\text{mass of solvent in kg}}

5.77^oC=1.86 ^oC/(mol/kg)\times (\frac{ i\times x}{164 g/mol\times 0.149 kg}+\frac{i'\times y}{74.5 g/mol0.149 kg})

On solving we get:

\frac{3x}{164 g/mol}+\frac{2x}{74.5 g/mol}=0.4622 mol....(2)

Solving equation (1)(2) for x and y:

x =5.973 g

y = 13.147 g

Mass percent of Ca(NO_3)_2 in the mixture:

\frac{x}{19.21 g}\times 100=\frac{5.973 g}{19.12 g}=31.23\%

The mass percentage of calcium nitrate is 31.23%.

5 0
3 years ago
Which device conferts electric energy into mechanical energy
Phantasy [73]

An electric motor converts electrical energy into mechanical energy.

What is electric motor?

An electric motor is an electrical machine that converts electrical energy into mechanical energy.

A generator is  mechanically identical to an electric motor, but operates with a reversed flow of power

Hence  it will convert mechanical energy into electrical energy.

Some applications of electric motor are:

Industrial fans, blowers and pumps, machine tools, household appliances, power tools, vehicles, and disk drives.

Learn more about electric motor :brainly.com/question/15409160

#SPJ1

4 0
2 years ago
Other questions:
  • Does the earths magnetic field change with time?
    13·1 answer
  • A butcher grinds 5 and 3/4 lb of meat then sells it for 2 and 2/3 pounds to the customer what is the maximum amount me that the
    9·1 answer
  • Four ways to increase magnitude of current in dynamo​
    8·1 answer
  • If the atomic radius of Copper is 0.128 nm, calculate the volume of its unit cell in cubic nanometers. Round off the answer to t
    12·1 answer
  • Why cant people with aids foght out the infection?
    8·2 answers
  • Need help ASAP
    9·1 answer
  • Calculate the work done by an applied force of 76.0 N on a crate for the following. (Include the sign of the value in your answe
    14·1 answer
  • A cat chases a mouse until the cat gets tired. A graph of the cat's velocity over time is shown below. Velocity 8+ 6+ 9+ 2 Time
    12·2 answers
  • A lightbulb has a power rating of 6.75 W and draws a current of 0.75 A when connected to a battery.
    14·1 answer
  • Which of the following equations illustrates the law of conservation of<br> matter?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!