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
Step2247 [10]
3 years ago
11

Which form of the law of conservation of energy describes the motion of the block as it slides on the floor from the bottom of t

he ramp to the moment it stops?
Physics
1 answer:
aivan3 [116]3 years ago
8 0

Answer:

Explanation:

Let assume begins movement at zero point, that is, height is equal to zero. The block has an initial linear kinetic energy and no gravitational potential energy and end with no linear kinetic energy, some gravitational potential energy and work losses due to slide friction. In mathematical terms, this system can be model as follows:

K_{1} = U_{2} + W_{loss, 1 \longrightarrow 2}

Where K, U, W are linear kinetic energy, gravitational potential energy and work, respectively.

You might be interested in
Almost all matter on Earth is usually
Leona [35]

Answer:  the answer is D.Heat from the engine under the hood transfered to the snow, melting it.

Explanation:  Heat always transfers from warmer objects to cooler objects. For example, if snow is on the hood of your car, as the engine warms up, heat will be transfered from the engine to the snow, melting the snow and cooling the engine.

5 0
3 years ago
Explain how do global winds impact weather in an area?
PolarNik [594]

Answer:

As the warmer air over the equator rises, colder air from the poles rushes toward the equator to take its place. Global winds push air masses around Earth and bring changes in the weather. In the United States, global winds called the prevailing westerlies push air masses from west to east.

Explanation:

6 0
3 years ago
Read 2 more answers
For the following equation answer the following:
sergij07 [2.7K]

Answer:

4Al + 3O2 + heat ------> 2Al2O3

Explanation:

It is endothermic reaction.

8 0
3 years ago
A 52 kg woman cheats on her diet and eats a 540 kcal jelly donut for breakfast. (a) How many joules of energy are the equivalent
Nadusha1986 [10]

Answer:

a)801KJoules

b)The woman must climb stairs for an equivalent of 1.57km

Number of stairs=7850 stairs

Explanation:

a)We use the conversion between Joules and Kcal:

4184Joules=1Kcal

540Kcal*(1484Joules/1Kcal)=801KJoules

b)The physical Work must be equal to the food energy

W_{physical}=E_{food}\\ mgh=E_{food}\\h=E_{food}/(mg)=801KJoules/(52Kg*9.81m/s^{2})=1.57Km\\

The woman must climb stairs for an equivalent of 1.57Km

For example if an stair measure 20cm=0.2m

Number of stairs=1.57km/0.2m=7850 stairs

4 0
3 years ago
From laboratory measurements, we know that a particular spectral line formed by hydrogen appears at a wavelength of 500 nanomete
Katena32 [7]

The star is moving toward the earth.

It is due to the phenomenon of the Doppler shift.

The <u>Doppler effect</u>, commonly referred to as "Doppler shift," is the <u>change in the wavelength </u>or frequency of waves as a result of an observer's motion in relation to the wave source.

It is possible to see this<u> apparent wavelength </u>change in the visible light emitted by stars and galaxies.

As a result, a star moving toward Earth appears to emit light with a shorter <u>wavelength</u> than a light source that is stationary. It is known as blueshift because <u>shorter wavelengths</u> cause the spectrum to shift toward the <u>blue end</u>.

While a star traveling away from us appears to shift its light towards longer wavelengths. Astronomers refer to this as redshift since it is closer to the <u>red end of the spectrum.</u>

<u />

As the spectrum of a particular star shows the hydrogen line appearing at a shorter wavelength of 480 nm in comparison to the laboratory measurements, that show the same hydrogen lines at a greater wavelength of 500 nanometers, that’s why we conclude that the star is moving toward earth.

Learn more about Doppler shift here brainly.com/question/23841569

#SPJ4

7 0
2 years ago
Other questions:
  • The downward pull of an object due to gravity is the objects _______?
    5·2 answers
  • What is the month of winter
    10·2 answers
  • Which statement below concerning the photoelectric effect is true? View Available Hint(s) Which statement below concerning the p
    12·1 answer
  • The scientist who suggested that energy can be created under certain conditions was
    8·1 answer
  • Sodium is a soft, light, extremely malleable silver-white metal that reacts explosively with water. Chlorine is a highly irritat
    13·1 answer
  • A horizontal circular curve on a highway is designed for traffic moving at 60 km/h. If the radius of the curve is 150 m, and if
    11·1 answer
  • 2. What is a mirror? How does it work?​
    11·1 answer
  • A box weighing 10 N is 4 m away from the fulcrum. How much force must be applied 1 m away on the opposite end of the fulcrum in
    7·1 answer
  • You pull a 70-kg crate at an angle of 30° above the horizontal. If you pull with a force of 600N and the coefficient of kinetic
    13·1 answer
  • Which statements are true?​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!