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
Alex_Xolod [135]
3 years ago
12

How much time would it take for an

Physics
1 answer:
Elina [12.6K]3 years ago
4 0

36 and a half hours

Explanation:

You might be interested in
An open train car moves with speed 18.5 m/s on a flat frictionless railroad track, with no engine pulling the car. It begins to
olga2289 [7]

Answer:

The speed decreases.

Explanation:

This can be explained using the conservation of linear momentum.

Since there is no friction, the initial moment of the train must be equal to its linear moment after it is filled with water.

the initial linear momentum is

m_{1}v_{1}

where m_{1} is the initial mass of the train, and v_{1} the initial speed of the train.

And linear momentum after the water filled the train car is

m_{2}v_{2}

where m_{2} is mass of the train after the  rain, and v_{2} the speed of the train after the rain

<u>the equality must be fulfilled:</u>

m_{1}v_{1}=m_{2}v_{2}

We know that if water is added to the train, m_{2} that is the mass after the water is added, is greater than m_{1} which is the mass of the train without the water.

Therefore, in order for the conservation of the linear momentum to be fulfilled: m_{1}v_{1}=m_{2}v_{2}

the speed after the water is added (v_{2} ) must be smaller than the initial train speed (v_{1} ) . So the speed of the car decreases.

3 0
3 years ago
The top pair of pliers failed to loosen a stubborn bolt, but the bottom pair successfully removed it.
Lesechka [4]

The top pair of pliers failed to loosen a stubborn bolt, but the bottom pair successfully removed it. Because the contact between the bolt and the   pliers working surface is less.

<h3>What is mechanical advantage ?</h3>

Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtained efficiency of the given mechanical machine.

The efficiency to open the stubborn bolt depends upon the contact between the working surface of the pliers and the bolt.

The contact between the bolt and the top pair of pliers working surface is less. Its mechanical advantage is less.

Hence, the top pair of pliers failed to loosen a stubborn bolt, but the bottom pair successfully removed it.

To learn more about the mechanical advantage, refer to the link;

brainly.com/question/7638820

#SPJ1

3 0
2 years ago
The concept of aggression cues is associated with A. frustration-aggression theory. B. the work of animal behaviorist Konrad Lor
leva [86]
<span>A. frustration-aggression theory.
Good Luck!!</span>
7 0
3 years ago
When you whirl a can at the end of a string in a circular path, what is the direction of the force that acts on the can
andreyandreev [35.5K]

Answer:

Toward the centre of the circular path

Explanation:

The can is moved in a circular path: this means that it is moving by circular motion (uniform circular motion if its tangential speed is constant).

In order to keep a circular motion, an object must have a force that pushes it towards the centre of the circular trajectory: this force is called centripetal force, and its magnitude is given by

F=m\frac{v^2}{r}

where m is the mass of the object, v its tangential speed, r the radius of the trajectory. This force always points towards the centre of the circular path.

3 0
3 years ago
What is the push and pull of a man about to hit a golf ball with a golf club. Is it causing a change in SPEED, or DIRECTION, or
ivanzaharov [21]
It would be both speed and direction depending on the man's swing 
5 0
3 years ago
Other questions:
  • Spin cycles of washing machines remove water from clothes by producing a large radial acceleration at the rim of the cylindrical
    6·1 answer
  • How to calculate displacement in physics?
    12·2 answers
  • An engine draws energy from a hot reservoir with a temperature of 1250 K and exhausts energy into a cold reservoir with a temper
    5·1 answer
  • A light ray in air enters and passes through a block of glass. What can be stated with regard to its speed after it emerges from
    5·1 answer
  • The Calvin cycle can only happen in the dark. <br> a. True<br> b. False
    11·1 answer
  • Magnets use ---- to attract to some objects
    12·2 answers
  • A motorcycle has a constant acceleration of 3.49 m/s2. Both the velocity and acceleration of the motorcycle point in the same di
    10·1 answer
  • Describe the relationship between the length and period of a pendulum in the language of direct proportions
    12·1 answer
  • What would be the Elastic Potential Energy (EPE) stored in a spring with a constant k = 200 N/m that is pulled to stretch 0.45m?
    8·1 answer
  • A force of 36N acts at an angle of 55 degrees to the vertical. The force moves its point of application by 64 cm in the directio
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!