Which characteristic do all of the outer planets have in common?.

Answer:

B) sublimation

Explanation:

An example is the vaporization of frozen carbon dioxide (dry ice) at ordinary atmospheric pressure and temperature.

Answer:

sublimation

Explanation:

sublimation, in physics, conversion of a substance from the solid to the gaseous state without its becoming liquid. An example is the vaporization of frozen carbon dioxide or dry ice(CO2)

or Solid Chlorine (Cl2) at ordinary atmospheric pressure and temperature. The phenomenon is the result of vapour pressure and

temperature relationships.

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Answer:

D

No matter what time of year it is, shadows will remain the same.

Explanation:

Answer:

A

Explanation:

Late in the year the sun the earth is tilted away from the sun that means the sunlight is not coming in as directly. So, shadows during are longer.

Answer:

first class lever

in a first class lever fulcrum is b/w input and output force

Answer:

electric stuff

Explanation:

I didn't see any option choices so srry

(a) The launch angle of the ball is 5⁰.

(b) The actual speed of the ball when it leaves the person's hand is 35.13 m/s.

(c) The maximum height reached by the ball is 0.46 m.

(d) The time spent in air by the ball is 0.26 s.

(e) The horizontal distance traveled by the ball on the road is 4.55 m.

The launch angle of the ball is calculated as follows;

[tex]tan(\theta) = \frac{V_y}{V_x} \\\\\theta = tan^{-1} (\frac{3}{35} )\\\\\theta = 5\ ^0[/tex]

The actual speed of the ball when it leaves the person's hand is calculated as follows;

[tex]V = \sqrt{V_x^2 + V_y^2} \\\\V = \sqrt{(35)^2 + (3)^2} \\\\V = 35.13 \ m/s[/tex]

The maximum height reached by the ball is calulated as follows;

[tex]Vy_f^2 = V_y_i^2 - 2gh\\\\0 = 3^2 - 2(9.8)(h)\\\\19.6h = 9\\\\h = \frac{9}{19.6} \\\\h = 0.46 \ m[/tex]

The time spent in air by the ball is calculated as follows;

[tex]h=V_yt + \frac{1}{2} gt^2\\\\0.46 = 3t + 4.9t^2\\\\4.9t^2 +3t - 0.46 = 0\\\\a = 4.9, \ b = 3, \ c =- 0.46\\\\t = \frac{-b \ \pm \ \sqrt{b^2 - 4ac} }{2a} \\\\t = 0.13 \ s[/tex]

Total time for upward and downward motion  = 2(0.13 s) = 0.26 s

X = Vx(t)

X = 35 x 0.13

X = 4.55 m

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Answer:

7. answered because ia an pro

Explanation:

[tex]area = \frac{1}{2} bh[/tex]

[tex]area = \frac{1}{2} \times 60 \times 50[/tex]

[tex]area = \frac{3000}{2} [/tex]

[tex]area = 1500mm ^{2} [/tex]

Answer:

1 atm = 1.01E5 nt/m^2 = 1.01E5 pascals

5.05E5 nt/m^2 = 5.05E5 pascals

1 pascal = 1 nt/m^2

Answer:

a person walking upstairs is a wasted energy

Answer:

C

Explanation:

C should be the right answer

Using the idea of work done under gravity, the height of the building is 187 m.

We must recall that the work done in a gravitational field is given by; mgh

m= mass

g = acceleration due to gravity

h = height

mass = 60.0 kg

Workdone = 1.15x10^5 J

W = mgh

h = W/mg

h =  1.15x10^5 J/60.0 kg * 9.8 ms-2

h = 187 m

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Answer:

0.20 Hz

Explanation:

Frequency is the reciprocal of the period. The period is 5 seconds, so the frequency is 1/(5 s) = 0.20 Hz.

To design an earthquake-resistant structure, we must take several aspects into account, such as materials and construction techniques.

An earthquake-resistant structure is a term that refers to a type of structure that has the characteristic of resisting earthquakes without being destroyed or seriously affected.

Earthquake-resistant structures were developed to prevent tragedies due to the collapse of structures during earthquakes. Generally, to make a structure earthquake resistant, materials are used that resist the movements of the earth without breaking.

The most used materials to make earthquake-resistant structures are:

Additionally, earthquake-resistant structures include specific construction techniques that allow them to arrange materials in a certain way to resist movement.

According to the above, the best option to build a 500 square foot earthquake-resistant structure is a 25-foot-wide by 20-foot-long single-story structure to make it more resistant to earth movements.

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(a) The final angular velocity of the flywheel after 3 complete revolutions is 4.96 rad/s.

(b) The time taken for the flywheel to make 3 complete revolutions is 5.93 s.

The final angular velocity of the flywheel after 3 complete revolutions is determined by applying third kinematic equation as shown below;

θ = 2π (rad/rev) x (3 rev) = 18.85 rad

ωf² = ωi² + 2αθ

ωf² = (1.4)² + 2(0.6)(18.85)

ωf² = 24.58

ωf = √24.58

ωf = 4.96 rad/s

The time taken for the flywheel to make 3 complete revolutions is calculated as follows;

ωf = ωi + αt

t = (ωf  - ωi)/α

t = (4.96 - 1.4)/0.6

t = 5.93 s

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 The work done on the car due to friction is -125 J.

Work is said to be done when a force moves an object through a certain distance.

To calculate the workdone on the car by friction, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The work done on the car due to friction is -125 J.

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Answer:

..........................................................

Explanation:

(1) The thermal energy absorbed by the Carnot engine is 7.15 x 10⁸ J.

(2) The thermal energy lost per hour by the Carnot engine is 2.75 x 10⁸ J.

The thermal energy absorbed by the heat engine is calculated as follows;

[tex]Q_h = \frac{P\Delta t}{1 - T_c/T_h}[/tex]

where;

[tex]Q_h = \frac{(122,000) \times (3600)}{1 - \frac{282}{731} } \\\\Q_h = 7.15\times 10^8 \ J[/tex]

The thermal energy lost per hour by the heat engine is calculated as follows;

[tex]Q_c = Q_h - P\Delta t\\\\Q_c = (7.15 \times 10^8 )\ - \ (122,000 \times 3600)\\\\Q_c = 2.75 \times 10^8 \ J[/tex]

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Answer:

8 v

Explanation:

power = watts = v i

                 36   = v (4.5)

                   v = 8 v

Answer:

no

Explanation:

Answer:

False

Explanation:

If an elastic material is stretched with enough force it will go beyond its 'Elastic Limit' otherwise known as its 'Limit of Proportionality'.

When this happens permentant deformation wiil occur.

Think of a spring... if it is stretched with enough force it won't return back to its original shape. Therefore it has NOT maintained its nature.

Answer:

887.5 J

Explanation:

Kinetic energy is the energy gained by a body due to its motion.

Its formula is :-

KE = [tex]\frac{1}{2} mv^{2}[/tex]

Values we are given :

Substituting :

Explanation:

Glass is good insulator because of the following reason:

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Glass is considered a good insulator because of its special way its molecules are arranged and its properties.

Glass is not like other solid materials because it doesn't have a regular structure. This messy pattern of atoms in glass makes lots of tiny holes and dirt in the material. Air bubbles and dirt make it harder for heat to move through the glass, so less heat moves through it.

Glass doesn't transfer heat easily because it has low thermal conductivity. Glass does not allow heat to move through it easily and helps to keep heat inside.

Glass does not easily let electricity pass through it. This means that it doesn't let electricity pass through easily. Glass cannot conduct electricity because it does not have any free electrons or mobile charged particles.

Glass allows infrared radiation, which is a type of heat energy, to pass through it. Glass lets light in but stops some heat from getting through.

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