Draw an energy chain diagram to show energy transformations for this event:
A car's engine burns fuel to move the car down the road. The car's engine heats the car and the
outside air.

Answer:

774.8 secs

Explanation:

distance(d)= speed(v)* time(t)

calculate speed:

refractive index = speed of light (c)/ speed of light in medium (v)

1.56 = 3*10^8*v

v=192307692.3 m/s

d = v *t

t = d/v

on substituting values:

t = 774.8 secs

Answer:

see below

Explanation:

Reultant force via Pythag Theorem

R = sqrt (3^2 + 4^2) = 5 N

F = ma

5 = 20 a

a = 5/20  m/s^2

Answer:

I believe it's the electric field.

Explanation:

Answer:

Homogeneous mixture is a mixture of two substances that is completely even throughout the solution and there are no borders inbetween substances. It looks like one new substance. The sugar-water is a homogenous mixture while the sand-water is a heterogeneous mixture.

Answer:

by both contact and closeness

Explanation:

The momentum and direction of the third piece with respect to the 100 g piece is 0.11 kgm/s at 11 degrees.

The momentum and direction of the third piece with respect to the 100 g mass is determined by applying the principle of conservation of linear momentum.

Pi = Pf

where;

0 = P₁ + P₂ + P₃

where;

-P₃ = P₁ + P₂

-P₃x = P₁cosθ + P₂Cosθ  --(1)

-P₃y =  P₁sinθ + P₂sinθ  --(2)

-P₃x = (0.1 x 1.2 x cos0) + (0.03 x 0.8 x cos120)

-P₃x = 0.12 - 0.012

-P₃x = 0.108 kgm/s

P₃x = -0.108 kgm/s

-P₃y =   (0.1 x 1.2 x sin0) + (0.03 x 0.8 x sin120)

-P₃y =  0.0208 kgm/s

P₃y =  -0.0208 kgm/s

[tex]P_3 = \sqrt{P_3x^2 + P_3y^2} \\\\P_3 = \sqrt{(-0.108)^2 + (-0.0208)^2} \\\\P_3 = 0.11 \ kgm/s[/tex]

[tex]tan \ \theta = \frac{P_3y}{P_3x} \\\\\theta = tan^{-1} (\frac{P_3y}{P_3x} )\\\\\theta = tan^{-1} (\frac{-0.0208}{-0.108} )\\\\\theta = 11\ ^0[/tex]

with respect to 100 g, direction of third piece is 11⁰

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Answer:There are total four forces acting on the bicyclist namely, gravitational force, normal force, pushing force and air drag.

The magnitude of net force acting on the bicyclist is 165 N.

The required magnitude of force generated for the pedaling is of 225 N.

Given data:

The mass of bicyclist is, m = 75.0 kg.

The magnitude of acceleration is, .

The magnitude of drag force is, F = 60.0 N.

(1)

There are in total 4 forces acting on the bicyclist:

The gravitational force on the bicyclist, acting vertically downward, of magnitude , where m is the mass of the bicyclist and g is the acceleration due to gravityThe normal force exerted by the floor on the bicyclist and the bike, N, vertically upward, and of same magnitude as the gravitational forceThe force of push F", acting horizontally forward, given by the push exerted by the bicyclist on the pedalsThe air drag, F, of magnitude F = 60.0 N, acting horizontally backward, in the direction opposite to the motion of the bicyclist

(2)

The magnitude of net force acting on the bicyclist is given as,

Thus, the magnitude of net force acting on the bicyclist is 165 N.

(3)

We need to find the forward force of push, F'', which is actually the force generated during pedaling.

Then the expression for the forward pushing force F" is given as,

Thus, we can conclude that the force  generated for the pedaling is of 225 N.

Explanation:

The magnitude of the net force on the bicyclist was 0 N.

Her pedaling is generating  a force of  50 N in opposite of the drag force .

Force is defined in physics as: the push or pull on an object with mass that causes it to change velocity. Force is an external agent that can change the state of rest or motion of a body. It has a magnitude as well as a direction.

A spring balance can be used to calculate force.

As the bicyclist (including the bicycle) is pedaling right with a constant speed, the magnitude of the net force on the bicyclist was = mass × acceleration

= 70 kg × 0 m/s²

= 0 N.

Again her pedaling is generating  a force = drag force = 50 N in opposite of the  drag force . So that, net force on it becomes zero.

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Answer:

density

Explanation:

higher density ===> higher propagation speed

Answer:

1.

A. 10 - 20 seconds

B. 0 - 10 seconds and 20 - 30 seconds

C. 30 - 50 seconds

2. No

Explanation:

Answer:

The frequency of a wave is inversely proportional to its wavelength. This means that high frequency waves have a shorter wavelength, while low frequency waves have a longer wavelength. Light waves have very, very short wavelengths.

Explanation:

Answer:

.6 A

Explanation:

V = IR

V/R = I

12/20 = I = .6 A

Answer:

a) 0.60 A

Explanation:

Given that,

→ Potential difference (V) = 12 V

→ Resistance (R) = 20 Ω

→ Current (I) = ?

Formula we use,

→ I = V/R

Let's solve the problem,

→ I = V/R

→ I = 12/20

→ [ I = 0.60 ]

Hence, option (a) is the answer.

Answer: Frost

Explanation: Frost is the deposition of ice, that develops after the freezing of the water vapor. It most commonly appears on the surfaces of the ground and can be observed as fragile crystals of ice. These can be observed on the window panes, blades of the grass, or any other solid exposed surface. The window frost develops when a pane of glass is exposed to below freezing temperature from the outer surrounding and the moist air from inside.

Answer: It is frost.

Explanation: I took the test on edge 2022.

Answer:

- 8 m/s^2

Explanation:

given:

Final velocity = 0

initial velocity = 40

time = 5 seconds

we can use the equation vf = vi + at

hence,

0 = 40 + 5a

-40 = 5a

a = -8 m/s^2

The potential energy of a spring is mathematically given as

P.E= 20 J

Question Parameter(s):

is compressed 0.65 m by a 25 kg block

if the spring constant is 95 n/m

Generally, the equation for the potential energy is mathematically given as

PE = mgh

Therefore

P.E=0.5 kx^2

P.E= 0.5 x 95 x (0.65)^2

P.E= 20 J

In conclusion, The potential energy of a spring

P.E= 20 J

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Answer:

(D)

Explanation:

20 J

Power is the ratio of the heat entered into the refrigerator to the coefficient of performance of the refrigerator. The power required to run the compressor in Watts is 249.149 W.

Power is the ratio of the heat entered into the refrigerator to the coefficient of performance of the refrigerator.

Given the surface area of the interior of the refrigerator is

A= 4.3 m ²

The refrigerator is insulated by a material of  thickness

t =3.6 cm =0.036 m

The thermal conductivity of insulating material is

k =0.0300 J/m-s

The change in temperature inside the refrigerator and room temperature is

dT= (273.15 + 44.2) -(273.15 + 9.2) =35 K

The rate of heat entered the refrigerator.

[tex]Q=\frac{k\times A\times dT}{t}[/tex]

Substituting value into the equation, we get

Q =126.67 W

The coefficient of performance of the refrigerator is

[tex]COP=\dfrac{(273.15+9.2)}{(273.15+44.2)-(273.15+9.2)}[/tex]

COP = 8.07

As, work done by the motor is 6.3% of the theoretical maximum,

[tex]\dfrac{6.3\times8.07}{100} =0.50841[/tex]

The power required to run the compressor will be

[tex]P=\dfrac{126.67}{0.50841} =249.149\:\rm W[/tex]

The power required to run the compressor is 249.149 W

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Answer:

They are rich in nutrients like vitamin C, K, and manganese. They are also a good source of antioxidants, which help in preventing reducing cholesterol.

Explanation:

A photon is a quantum of light is the correct answer.

A photon is tiny packets of energy of electromagnetic radiation. This concept is presented by Albert Einstein in order to explain the photoelectric effect. Photon is also known as light quantum because it is related to light.

So we can conclude that photon is a quantum of light is the correct answer.

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Answer:

a quantum of light

Explanation:

I got it right on the test.

Answer:

Postindustrial

Explanation:

For a twin-sized air mattress used for camping has dimensions of 100 cm by 200 cm by 15 cm when blown up, the weight is mathematically given as

M=2923.38N

Generally, the equation for the maximum mass   is mathematically given as

M=Vp-m

Therefore

M=100*200*15(1*10^3)-2kg

M=298kg

In conclusion,  the weight

W=298kg*9.81

W=2923.38N

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Answer:The molecule is represented by the conventional Lewis structure, even though the shared electron pair is associated to a larger extent with chlorine than with hydrogen. The unequal sharing of the bonding pair results in a partial negative charge on the chlorine atom and a partial positive charge on the hydrogen atom.

Explanation:

Answer:

amplitude

Explanation:

Answer:

what the freak

Explanation:

the kinetic energy of the whatever hit the bullet is transferred to enabling it to accelerate thus attaining a velocity with which it moves out of the barrel of the gun but some of the kinetic energy is lost in form of sound and heat energy and the bullet travels out the barrel to the target

The statements is true about black holes is "black holes cannot be seen, but we can see the effects of their gravitational fields." . Option B. This is further explained below.

Generally, A black hole is simply defined as a region of space where gravity is strong that light cannot escape.

In conclusion, We can't see black holes, but we can witness the consequences of their gravitational fields.

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Answer:

they have high frequencies and short wavelength

Explanation:

 hope this helps

They have high frequencies and short wavelengths are the properties of X-rays and gamma rays make them the forms of with the most energy.

Electromagnetic radiation is a type of energy that is transmitted in incident photons as both magnetic and electric waves.

Electromagnetic radiation has a spectrum with varying wavelengths and frequencies, which gives it different properties.

Electromagnetic radiation is a type of energy that travels in packets of energy called photons as both electrical and magnetic waves.

Wave-particle duality is the name given to this phenomenon. This is a notion that defines how a wave behaves whether it behaves like particles, waves, or both particles and waves.

They have high frequencies and short wavelengths are the properties of X-rays and gamma rays make them the forms of with the most energy.

Hence, option C is correct.

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The key elements of better decision making can help you rationalize problem, set boundaries around the solution, identify the right thing to do, identify the actions, and get feedback.

Answer:

iv)Salt

III) Ethanol

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