using your data, how are you able to determine if conservation of momentum occurs in each collision?

Answer:

15 is it

Explanation:

Answer:

The answer would be 0.23

Explanation:

Put in 0.23

Answer:

Centripetal force is perpendicular to velocity and causes uniform circular motion. ... force exerted on a 900.0-kg car that negotiates a 500.0-m radius curve at 25.00 m/s. ... A car moving at 96.8 km/h travels around a circular curve of radius 182.9 m ... Because the car does not leave the surface of the road, the net vertical force ...

Explanation:

HE monda

It 4.5 hours for the light bulb to consume 8100 watt-hours of power.

The energy consumed by the light blub = 8100 watt-hours.

Let the time taken be t hours.

We know that;

Energy = power × time

Energy (E) =  8100 watt-hours

Power (P) = 1800 watt

Time (t) =?

8100 =  1800 × t

= 8100 / 1800

= 4.5 hours

The time taken by the light bulb is 4.5 hours.

Therefore, it could take 4.5 hours for the light bulb to consume 8100 watt-hours.

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Answer:

LOL Diagrams

a way to represent how the energy is stored in the chosen system during various snapshots and to represent any changes in total energy for the system. Each “L” represents how the energy is stored during a particular snapshot (instant). The “O” shows the objects inside and outside the system.

v is velocity, x is position, t is time, and a is acceleration.

Answer:

Mechanics: A branch of physics in which we study about the object and properties of an object in form of a motion under the action of the force.

The group that will make the car travel closest to 5 m/s when it is at the bottom of the first will is of:

Group C.

The velocity that each car will assume at the bottom of the hill is given by the equation presented as follows:

v = square root (2gh + kx²/m).

The parameters are given as follows:

The parameters are given by the table in this problem, hence the velocities of each car are given as follows:

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Answer: group C

Explanation:

By utilizing radiometric dating to track the isotope decay within the fossil or, more frequently, the rocks it is linked with, absolute dating can pinpoint an object's exact age.

Scientists use radioactive dating to establish the precise age of sedimentary rocks. The age of the rock fragments is obtained to accomplish this. It is possible to determine the absolute age of rocks by using the nuclear decay of radioactive isotopes, which exhibits clock-like behavior. An "isotope parent" transforms into an "isotope daughter" through a process known as radioactive decay. A technique for establishing the age of an object containing organic material by using radiocarbon dating, often known as carbon dating or carbon-14 dating.

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Answer: Neap tides

Explanation: Neap tides are tides that have the smallest tidal range, and they occur when the Earth the Moon, and the Sun form a 90o angle. They occur exactly halfway between the spring tides when the Moon is at first or last quarter.

The apparent and absolute magnitudes of this star change if the distance between Earth and the star were decreased because option (A) The apparent magnitude number would increase, and the absolute magnitude number would decrease

The apparent magnitude of a star is a measure of its brightness as seen from Earth, while the absolute magnitude is a measure of its intrinsic brightness. If the distance between Earth and the star were decreased, the star would appear brighter and therefore have a higher apparent magnitude.

However, the absolute magnitude would decrease because the star's intrinsic brightness has not changed, but its apparent brightness has increased due to the decreased distance.

Therefore, the correct option is (A) The apparent magnitude number would increase, and the absolute magnitude number would decrease

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The speed of the first car is 52 mph.

The speed of the second car is 40 mph.

Let's use "x" mph to represent the second car's speed. We can express the first car's speed as "x + 12" mph because it is 12 mph faster. According to our knowledge, the first car travelled 234 miles, while the second car covered 180 miles.

The relationship between speed and distance travelled is inversely proportional. As a result, the proportion of distances covered by the two vehicles will match the proportion of their speeds:

234 / 180 = (x + 12) / x

To solve this equation, we can cross-multiply:

234x = 180(x + 12)

Expanding the equation:

234x = 180x + 2160

Rearranging terms:

234x - 180x = 2160

54x = 2160

Dividing both sides by 54:

x = 40

Therefore, the speed of the second car is 40 mph.

To find the speed of the first car, we can substitute the value of x back into the expression "x + 12":

x + 12 = 40 + 12 = 52

Hence, the speed of the first car is 52 mph.

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When driving, a car travels 30 feet in the first second, 10 more in the second, and 10 miles in the third second, which is zero.

The item will move at a constant speed when there's no acceleration. We may examine Newton ’s law and the acceleration formula mathematically. We are aware that there is no force. The speed must be zero because we are aware that the mass could be zero.

A change in velocity which does not alter over time is referred to as a constant acceleration. The average acceleration of an automobile remains constant even if it picks up 20 mph in one minute and then another 20 mph in the next.

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According to Jean Piaget, unrealistic idealism often occurs in adolescence as a result of egocentrism. The inability to distinguish between self and others is referred to as egocentrism.

The inability to distinguish between self and others is referred to as egocentrism. It is, more precisely, the incapacity to effectively assume or comprehend any viewpoint other than one's own.

Egocentrism may be present in every stage of life, including childhood, adolescence, and maturity.

Hence option B is correct. According to Jean Piaget, unrealistic idealism often occurs in adolescence as a result of egocentrism.

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Answer:

got it right⬇️✅

Answer:

The thermal efficiency, \(\eta _{reheat}\), of the Rankine cycle with reheat is 36.81%

Explanation:

p₁ = 8 MPa = 80 Bars

T₁ = 450°C = 723.15 K

From steam tables, we have;

v₁ = 0.0381970 m³/kg

h₁ = 3273.23 kJ/kg

s₁ = 6.5577 kJ/(kg·K) = s₂

The p₂ = 0.8 MPa

T₂ = Saturation temperature at 0.8 MPa = 170.414°C = 443.564 K

h₂ = 2768.30 kJ/kg

\(T_{2'}\) = 400°C = 673.15 K

\(h_{2'}\) = at 400°C and 0.8 MPa = 3480.6 kJ/kg

p₃ = 10 kPa = 0.1 Bar

T₃ = Saturation temperature at 10 kPa = 45.805 °C = 318.955 K

h₃ = 2583.89 kJ/kg

h₄ = \(h_{3f}\) = 191.812 kJ/kg

The thermal efficiency, \(\eta _{reheat}\), of a Rankine cycle with reheat is given as follows;

\(\eta _{reheat} = \dfrac{\left (h_{1}-h_{2} \right )+\left (h_{2'}-h_{3} \right )-W_{p}}{h_{1}-\left (h_{4}+W_{p} \right )+\left (h_{2'}-h_{2} \right )}\)

Therefore, we have;

\(\eta _{reheat} = \dfrac{(3273.23 -2768.30 ) + (3480.6 -2583.89 ) - 8.04)}{(3273.23 -(191.812 + 8.04) + (3480.6 -2768.30 ) } = 0.3681\)

Which in percentage is 36.81%.

the energy of ultraviolet radiation that has a wavelength is 6.95*\(10^{-19}\) kj/photon

calculation :

1.E =hc/λ

λ = hc/E

 = \(\frac{6.6626*10^{-34}*3*10^{8} }{1.99*10^{-19} }\)

 = \(1.0*10^{-8}m\)

2 . E =hc/λ

    λ = hc/E

       =  \(\frac{6.6626*10^{-34}*3*10^{8} }{3.97*10^{-19} }\)

      = 501 nm

3 . λ = 286 nm

     E =hc/λ

        =   \(\frac{6.6626*10^{-34}*3*10^{8} }{286}\)

        =  6.95*\(10^{-19}\) kj/photon

In physics, energy is the quantitative property transmitted to the body or physical system, perceived in the performance of work and in the form of heat and light. Energy is Conserved - The law of conservation of energy states that energy can be transformed into form, but cannot be created or destroyed. The unit of measure for energy in the International System of Units (SI) is the joule (J).

Common forms of energy include the kinetic energy of moving bodies, the potential energy stored in bodies (due to their position in the field, etc.), the elastic energy stored in fixed bodies, the chemical energy associated with chemical reactions, Radiant energy carried by electromagnetic radiation and internal energy contained in thermodynamic systems. All living things absorb and emit energy all the time.

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If a copper rod whose coefficient of linear expansion is 0.000017 is heated at 30⁰C and its length is 10cm, Then the new length of the copper rod is 10.0051cm.

If a body is subjected to expansion by virtue of temperature then its length gets increased by some extent that new length is given by,

Ln=L₀(1+\(\alpha\)Δt)

where Ln = New length after expansion.

L₀= Original length of the body.

\(\alpha\)= Coefficient of linear expansion.

Δt= Change in temperature.

Here in the question, given

L₀=10cm

t= 30°C

\(\alpha\)= 0.000017

new length

Ln= 10(1+0.000017×30)

Ln=10.0051cm

Hence the new length of the copper rod after the expansion is 10.0051cm.

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Answer: The infra red waves is located between microwave and visible light based on their WAVELENGTH and FREQUENCY of occurrence.

Explanation:

Electromagnetic waves are those waves that do not require or need a material medium for its propagation, but they are able to travel through a vacuum. They exhibit or show all properties associated or connected with light. They are undeflected in electric and magnetic fields. These electromagnetic waves are arranged in order of their FREQUENCY and WAVELENGTHS which is known as ELECTROMAGNETIC SPECTRUM.

FREQUENCY is defined as the number of cycles which the wave completes in one second and is measured in Hertz(Hz). While WAVELENGTH is defined as the distance between two successive crests or troughs of waves which is measured in meter (m).

The electromagnetic spectrum is made up of the following rays which is arranged from the biggest wavelengths to the smallest:

--> Radiowaves

--> microwave :

--> infrared rays:

--> visible light:

--> ultraviolet rays

--> x-rays and

--> Gamma rays.

According to the arrangement of the spectrum above, the microwave has a higher wavelength and frequency than the infrared rays, while the visible light has a lower wavelength and frequency than the infrared rays.

The length of the pendulum on the moon is 26.66 times the acceleration due to gravity on the moon.

Let's assume the length of the pendulum on the moon to be Lm.Length of the pendulum on the Earth, Le = 4.44 m

Gravitational acceleration on the Earth, ge = g

Gravitational acceleration on the moon, gm = (1/6) * g

According to the given data, we can write:

T(moon) = T(earth)⇒ `2π * √(Lm/gm)` = `2π * √(Le/ge)`⇒ √(Lm/gm) = √(Le/ge)⇒ √(Lm/(1/6)g) = √(4.44/g)⇒ √(Lm/g) = √(4.44/(1/6))⇒ √(Lm/g) = √(4.44 * 6)⇒ √(Lm/g) = √(26.64)⇒ √(Lm/g) = 5.16⇒ Lm/g = 5.16² = 26.66⇒ Lm = 26.66g

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Answer:

+3 in Atom, +9 in Nucleus

Explanation:

Charge of atom:

Neutrons are neutral in charge therefore ignore those for this portion,

there are 9 protons (+) and 6 electrons (-).

9 - 6 = +3 charge in atom

Charge of nucleus:

Neutrons are neutral as said before, there are 9 protons (+) and 6 neutrons (0).

9 + 0 = +9 charge in atom

Answer:

\(F_t=(4.64i+20j)N\)

Explanation:

Force in this problem is a vector quantity, so:

\(x_1=F_1[cos(\theta_1)]\\y_1=F_1[sin(\theta_1)]\)

and

\(x_2=F_2[cos(\theta_2)]\\y_2=F_2[sin(\theta_2)]\)

For this problem:

\(F_1=30N\\F_2=40N\)

\(\theta_1=180\)°=\(\frac{pi}{2}\)

\(\theta_2=30\)°=\(\frac{pi}{6}\)

The net force (\(F_t\)) is equal to the sum of the forces:

\(F_t=F_a+F_b\\\\F_a=30N[cos(\frac{\pi}{2})i+sin(\frac{\pi}{2})j]\\F_a=30N(-1i+0j)\\F_a=-30Ni\\\\F_b=40N[cos(\frac{\pi}{6})i+sin(\frac{\pi}{6})j]\\F_b=40N(\frac{\sqrt3}{2}i+\frac{1}{2}j)\\F_b=(20\sqrt3i+20j)N\\F_b=(34.64i+20j)N\\\\F_t=[(-30i)+(34.64+20j)]N\\F_t=(4.64i+20j)N\)

Hope that helps.

Answer:

Explanation:

A simple pendulum consists of a mass (usually represented as a small object or bob) attached to a string or rod of negligible mass. The mass is free to swing back and forth under the influence of gravity.

In the figure, the point of suspension is denoted by "O," and the mass (bob) is represented by the small circle. The string or rod is represented by the vertical line connecting the point of suspension to the bob.

Amplitude:

The amplitude of a pendulum refers to the maximum displacement or swing of the bob from its equilibrium position. In the figure, the amplitude can be represented by the angle formed between the vertical position and the position of the bob when it swings to its maximum distance on one side. It is usually denoted by the symbol "A."

Effective Length:

The effective length of a pendulum refers to the distance from the point of suspension to the center of mass of the bob. It represents the distance over which the mass swings back and forth. In the figure, the effective length can be measured as the length of the string or rod from the point of suspension to the center of the bob. It is usually denoted by the symbol "L."

It is important to note that the amplitude and effective length of a simple pendulum affect its period of oscillation (the time taken for one complete swing). The relationship between these parameters and the period can be described by mathematical formulas.

Overall, the simple pendulum is a fundamental concept in physics and provides a simplified model for understanding oscillatory motion and the principles of periodic motion.

A(n) Neap tide occurs when the sun is at right angels to the line between earth and the moon.

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The magnetic field points due north and the current is going straight up, the force will be perpendicular to both and will be to the east. Therefore, the resulting force on the current will be towards the east direction.

When a current-carrying wire is placed in a magnetic field, a force is exerted on the wire due to the interaction between the magnetic field and the current. The direction of the force is perpendicular to both the direction of the current and the direction of the magnetic field.
In the given scenario, the wire is carrying a current straight up and the magnetic field vector points due north. Therefore, the direction of the force on the current will be perpendicular to both the upward direction of the current and the northward direction of the magnetic field.
The right-hand rule can be used to determine the direction of the force on the current. If the right hand is wrapped around the wire with the thumb pointing in the direction of the current, and the fingers are curled in the direction of the magnetic field, the direction in which the fingers point will be the direction of the resulting force on the current.
In this case, since the magnetic field points due north and the current is going straight up, the force will be perpendicular to both and will be to the east. Therefore, the resulting force on the current will be towards the east direction.

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Sometimes true it is

For example, if the skateboarder is moving down the ramp the motion is in the same direction as the net force. On the other hand, if the skateboarder moves up the ramp, the direction of motion is opposite to the direction of the net force. In general, there is no reason for the direction of motion to be in the same direction as the net force.

The pace at which speed changes is known as acceleration. Acceleration typically, but not always, indicates a change in speed. Because the direction of an object's velocity is shifting even while it follows a circular course, it continues to accelerate.

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Answer:

C

Explanation:

Earth would be the answer. pluto is slowest. then Saturn, Jupiter, mars