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
Debora [2.8K]
2 years ago
5

8. What is the mass of a toy car with a speed of 12.5 m/s and 47500 J of kinetic energy?

Physics
1 answer:
Alla [95]2 years ago
7 0

Answer:

608kg

Explanation:

Formula : <u>Kinetic</u><u> </u><u>energy</u><u> </u>

½ ×mass x speed²

<u>47500</u>

½×12.5²

=608 Kg

You might be interested in
The diagram represents two charges, q1 and q2 separated by a distanced "d" which change would produce the greatest increase in t
ollegr [7]

Answer:

The diagram represents two charges, q1 and q2, separated by a distance d. Which change would produce the greatest increase in the electrical force between the two charges? *

Explanation:

doubling charge q1, only

4 0
2 years ago
A car is traveling along a road, and its engine is turning over with an angular velocity of +188 rad/s. The driver steps on the
andreev551 [17]

Answer:

3751.80514 radians

Explanation:

\omega_f = Final angular velocity

\omega_i = Initial angular velocity

\alpha = Angular acceleration

\theta = Angle of rotation

t = Time taken

\theta=\omega_it+\dfrac{1}{2}\alpha t^2\\\Rightarrow \theta=188\times 15.6+\dfrac{1}{2}\times 0\times 15.6^2\\\Rightarrow \theta=2932.8\ rad

The angular displacement would be 2932.8 rad

\theta=\omega_it+\dfrac{1}{2}\alpha t^2\\\Rightarrow \theta=293\times 15.6+\dfrac{1}{2}\times 0\times 15.6^2\\\Rightarrow \theta=4570.8\ rad

The angular displacement would be 4570.8 rad

\omega_f=\omega_i+\alpha t\\\Rightarrow \alpha=\dfrac{\omega_f-\omega_i}{t}\\\Rightarrow \alpha=\dfrac{293-188}{15.6}\\\Rightarrow \alpha=6.73076\ rad/s^2

\omega_f^2-\omega_i^2=2\alpha \theta\\\Rightarrow \theta=\dfrac{\omega_f^2-\omega_i^2}{2\alpha}\\\Rightarrow \theta=\dfrac{293^2-188^2}{2\times 6.73076}\\\Rightarrow \theta=3751.80514\ rad

Actual value of the angular displacement is 3751.80514 radians

5 0
2 years ago
I have two questions
Anettt [7]

Answer:

1)The energy transported by a wave is directly proportional to the square of the amplitude. So whatever change occurs in the amplitude, the square of that effect impacts the energy. This means that a doubling of the amplitude results in a quadrupling of the energy

2)Just as wavelength and frequency are related to light, they are also related to energy. The shorter the wavelengths and higher the frequency corresponds with greater energy. So the longer the wavelengths and lower the frequency results in lower energy.

Explanation:

8 0
2 years ago
Read 2 more answers
A leaf falls from a tree. As you are watching the leaf fall, how can you tell that it has reached its terminal velocity?
Ratling [72]
You can tell that it has reached its terminal velocity when D) the leaf is falling with a constant velocity as you are watching the leaf fall. The terminal velocity is a point of condition when an object's speed equalize the force of gravity. The terminal velocity condition could occur if there is no acceleration to the object's speed<span>.</span>
5 0
2 years ago
How is the polarization of an electromagnetic wave defined? Group of answer choices The polarization is defined by the plane in
Anarel [89]

Answer:

The polarization is defined by the plane in which the electric field is oscillating.

Explanation:

The polarization of an electromagnetic wave depends on the direction of the electric field. If the electric component is oscillating along the x-axis, the polarization will also be along the x-axis.

The polarization of the electromagnetic wave describes the magnitude and the direction of the electric field of the wave.

<u>The polarization is defined by the plane in which the electric field is oscillating.</u>

7 0
2 years ago
Other questions:
  • Calculate the wavelength of the electromagnetic radiation required to excite an electron from the ground state to the level with
    5·2 answers
  • Birds sitting on a single power line don't get shocked. But if they were to place one foot on each of two lines, ___________ wou
    6·2 answers
  • Why does the total amount of energy before and after any energy transformations remain the same?
    13·2 answers
  • Which listed property of alternating current is the MOST LIKELY reason it was chosen over direct current to provide electricity
    8·2 answers
  • The law of _________ states that energy is not truly produced, but really only manipulated from one form to another.
    8·1 answer
  • Why do people get sunburned by UV light ?
    6·1 answer
  • An x-ray and a radio wave are both shot into outer space (they both travel in vacuum). What is the difference between the two si
    10·1 answer
  • Energy of position or location is called
    6·1 answer
  • Density of iron in CGS unit is 7.8 g/cm3. Its density is SI is
    6·1 answer
  • Which of the following is an example if harmonic motion?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!