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
adell [148]
3 years ago
15

Tracy makes a list of energy transformations that occur as an engine runs to power a car.

Physics
2 answers:
kari74 [83]3 years ago
8 0

Answer: The correct answer is "Chemical energy transforms into gravitational potential energy".

Explanation:

In the given problem, an engine runs to power a car. The internal combustion engine in the car is gasoline which converts chemical energy into the thermal energy. Then, this thermal energy gets converted into kinetic energy by causing to power a car.

The chemical energy is obtained from the fuel which is in an engine of the car converts into thermal energy.

The thermal energy is generated in an engine of the car converts into the electrical energy so that the car can be started.

There is no use of gravitational potential energy in a car as it is due to the height above the ground.

Therefore, the correct option is (3).

makvit [3.9K]3 years ago
3 0

3. Chemical energy transforms into gravitational potential energy.

Explanation:

First of all, let's check the definition for each type of energy:

- Chemical energy is the energy stored in the chemical bonds inside compounds and substances

- Thermal energy is the energy due to the random motion of atoms/molecules (heat)

- Electrical energy is the energy related to the motion of electrical charges

- Gravitational potential energy is the energy of an object which is placed at some height above the ground

- Kinetic energy is the energy of an object in motion

Given this definition, we can check each energy transformation to see which one are really involved in the engine used to power the car:

1. Chemical energy transforms into thermal energy. --> YES. This one is present: in fact, the chemical energy contained in the fuel is converted inside the engine into heat (thermal energy)

2. Thermal energy transforms into electrical energy. --> YES. The heat (thermal energy) used in the engine is converted into electrical energy used to turn on the car.

3. Chemical energy transforms into gravitational potential energy. --> NO. There is no gravitational potential energy involved in this example, since the car runs on the ground.

4. Thermal energy transforms into kinetic energy. --> YES. The heat (thermal energy) used in the engine is converted into energy of motion of the car.

Therefore, Tracy should remove option 3) from her list.

You might be interested in
For a standard production car, the highest road-tested acceleration ever reported occurred in 1993, when a Ford RS200 Evolution
Ann [662]

Answer:

a = 8.06 m/s²

Explanation:

The acceleration of this car can be found using the first equation of motion:

v_f = v_i + at\\\\a = \frac{v_f-v_i}{t}

where,

a = acceleration = ?

vf = final speed = 26.8 m/s

vi = initial speed = 0 m/s

t = time = 3.323 s

Therefore,

a = \frac{26.8\ m/s-0\ m/s}{3.323\ s}

<u>a = 8.06 m/s²</u>

3 0
2 years ago
In the diagram, q1 = -6.39*10^-9 C and q2 = +3.22*10^-9 C. What is the electric field at point P? pls help
Alexxx [7]

Answer:

Below

Explanation:

First draw the vectors that represent both electric fields.

E1 is the elictric field created by q1, E2 is the one created by q2.

● q1 is negative so E1 will point from P.

● q2 is positive so E2 will point out of P

(Picture below)

■■■■■■■■■■■■■■■■■■■■■■■■■■

The resulting electric field is equal to the sum of the two fields since both vectors are colinear.

Let E be the total field.

● E = E1 + E2

The formula of the electric field intensity is:

● E = K ×(q/d^2)

-K is Coulomb's constant

-d is the distance between the charge and the object ( here P)

-q is the charge

■■■■■■■■■■■■■■■■■■■■■■■■■■

● E1 = K × (q1/d1^2)

The distance between q1 and P is the qum of 0.15 m 0.25 m. (0.4 m)

Coulombs constant is 9×10^9 m^2/C^2

● E1 = 9×10^9 ×[-6.39 × 10^(-9)/ 0.4^2]

● E1 = -359.43 N/C

■■■■■■■■■■■■■■■■■■■■■■■■■■

● E2 = K ×(q2/d^2)

The distance between q2 and P is 0.25 m.

● E2 = 9×10^9×[3.22×10^(-9) /0.25^2]

● E2 = 463.68 N/C

■■■■■■■■■■■■■■■■■■■■■■■■■■

● E = E1 + E2

● E = -359.43+463.68

● E = 105.25 N/C

4 0
3 years ago
Read 2 more answers
Which of the following has the fewest calence electrons?
dlinn [17]

Answer:

both magnesium and strontium have 2 valence electrons

Explanation:

potassium has 8 valence electrons, and nitrogen has 5.

8 0
2 years ago
At which position (1,2,3, or 4) does the roller coaster car have the most potential energy? Why?
julsineya [31]
At 1 because the cart is still at the top
3 0
3 years ago
IF YOU GET GOOD GRADES ON SCIENCE TESTS PLEASE HELP ME!!!!!
Elena-2011 [213]

Answer:

A i think hope this helps

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • If A = (6i-8j) units, B = (-8i-3j) units, and C = (26i-19j) units, determine a and b
    6·1 answer
  • Teams red and blue are having a tug-of-war. According to Newton's third law, the force with which the red team pulls on the blue
    5·1 answer
  • What two kinds of crust are involved in a subduction zone
    8·1 answer
  • A machine part rotates at an angular speed of 0.76 rad/s; its speed is then increased to 2.96 rad/s using an angular acceleratio
    15·1 answer
  • The electric field strength E is measured as:
    11·1 answer
  • Which of the following statements about X-rays and radio waves is not true? Which of the following statements about X-rays and r
    15·1 answer
  • A 49-year-old female was referred for mammography, but she is very apprehensive after reading about the risk of ionizing radiati
    7·1 answer
  • What is the self-inductance of a solenoid 30.0 cm long having 100 turns of wire and a cross-sectional area of 1.00 × 10-4 m2? (μ
    11·1 answer
  • Which is a pollutant associated with high-tech gadgets in landfills?
    13·2 answers
  • The image below The image below The image below The image below The image below The image below The image below The image below
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!