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
LenKa [72]
3 years ago
12

A 1.50 x 109 kg railroad car moving at 7.00 m/s to the north collides with

Physics
1 answer:
barxatty [35]3 years ago
8 0

GIVE ME YOUR MONEY

Explanation:

You might be interested in
Select the phrases that correctly describe density. Density is a chemical property. Density relates a mass to its volume. Densit
sp2606 [1]

Answer:

Density relates a mass to its volume.

Density varies with temperature

Density determines if a substance floats or sinks.

Density may have units of grams per milliliter (g/mL)

Explanation:

Density D is a characteristic property of a substance or material and is defined as the relationship between the mass m of a body or substance and the volume V it occupies:

D=\frac{m}{V}

This means the density is inversely proportional to the volume.

On the other hand, density is a scalar quantity and according to the International System of Units its unit is D=\frac{kg}{m^{3}} , although it can be also expressed in \frac{g}{ml}.

It should be noted that the density of a body is related to its buoyancy, a substance or body will float on another fluid if its density is lower. In addition, if the pressure of the substance remains constant, as the temperature increases, the density decreases; this means density varies with the temperature as well.

5 0
3 years ago
An 80.0 kg skier slides down a hill shaped as shown. Assume
umka21 [38]

The height above the ground from where the skier start is 11.5 m.

<h3>Conservation of energy</h3>

The height above the ground from where the skier start is determined by applying the principle of conservation of energy as shown below;

P.E = K.E

mgh = ¹/₂mv²

gh = ¹/₂v²

h = \frac{v^2}{2g} \\\\h = \frac{15^2}{2 \times 9.8} \\\\h = 11.5 \ m

Thus, the height above the ground from where the skier start is 11.5 m.

Learn more about conservation of energy here: brainly.com/question/166559

8 0
2 years ago
How can recycling impact the environment?
Diano4ka-milaya [45]

Answer:

a is a good answer

Explanation:

because most items whether clothes or things we eat with, are made with something natural and recycled

6 0
3 years ago
Why water in earthern pot remain cool in summer
hjlf

Answer:

Since in summer, the eastern side do not face the sunlight and hence the water in eastern pot remain cool in summer.

8 0
2 years ago
Read 2 more answers
A vessel that contains a gas has two pressure gauges attached to it. One contains liquid mercury, and the other an oil such as d
castortr0y [4]

Answer:

Pressure of the gas = 12669 (Pa) and height of the oil is 1,24 meters

Explanation:

First, we can use the following sketch for an easy understanding, in the attached image we can see the two pressure gauges the one with mercury to the right and the other one with oil to left. We have all the information needed in the mercury pressure gauge, so we can determine the pressure inside the vessel because the fluid is a gas it will have the same pressure distributed inside the vessel (P1).

Since P1 = Pgas, we can use the same formula, but this time we need to determine the height of the column of oil in the pressure gauge.

The result is that the height of the oil column is higher than the height of the one that uses mercury, this is due to the higher density of mercury compared to oil.

Note: the information given in the units of the fluids is not correct because the density is always expressed in units of (mass /volume)

4 0
3 years ago
Other questions:
  • Which statement best describes perigee?
    8·2 answers
  • A ? watcher is a citizen who is paid by the parties to keep a watchful eye on the voters and the officials.
    14·2 answers
  • A car travelling at 40 m/s comes to a halt in 8 seconds. What is the car’s acceleration and how far does it travel while it is s
    11·1 answer
  • What is the volume occupied at stp by a mixture of 4.00 g of he(g),?
    8·1 answer
  • If you had to explain to a non-scientist why it is that scientists accept the idea that all material things are composed of atom
    14·1 answer
  • A farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is 1.570 diopters. Since these
    12·1 answer
  • For a reaction to occur what must happen to the energy in order to break the chemical bond
    5·1 answer
  • How does the ocean play an important role in climate and climate change? Keep answer related to the specific heat capacity of wa
    15·1 answer
  • When a substance easily dissolves in a liquid, it has high solubility in that liquid. When a substance does not easily dissolve
    7·1 answer
  • The heaviest invertebrate is the giant squid, which is estimated to have a weight of about 0.37 tons spread out over its length
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!