A lump of clay (m = 3.01 kg) is thrown towards a wall at speed v = 3.15 m/s. The lump sticks to the wall.
(a) What kind of collision is it? Is momentum conserved during this collision? Why or why not?
(b) Calculate the impulse imparted on the lump by the wall.
(c) Calculate percent of initial kinetic energy lost during this collision.

Their electrical potential energy will decrease, their kinetic energy will increase, and they will travel towards each other.

When two negative charges are released and constrained to remain close together, the charges will be repelled by each other due to their opposite electrical charges.

This repelling force causes the charges to move away from each other, increasing their kinetic energy and decreasing their electrical potential energy.

Since they are constrained to remain close together, they will travel towards each other until they come into contact. At that point, the electrical potential energy will reach its minimum, and the kinetic energy will reach its maximum.

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Answer:

As the full spectrum of visible light travels through a prism, the wavelengths separate into the colors of the rainbow because each color is a different wavelength. Violet has the shortest wavelength, at around 380 nanometers, and red has the longest wavelength, at around 700 nanometers.

Explanation:

The maximum elongation of Earth as seen from Mars, we need to understand the concept of elongation. Elongation is the angle between a planet and the Sun as observed from another celestial body. In this case, we are observing Earth's elongation from Mars.

The maximum elongation occurs when the two planets are at their closest approach in their respective orbits. This is called opposition. During opposition, Earth and Mars are on opposite sides of the Sun, which results in the largest possible elongation.

To calculate the maximum elongation, we can use the following steps:

1. Determine the average distance between Earth and Mars at opposition. This is approximately 54.6 million kilometers (33.9 million miles).

2. Calculate the angle between Earth, Mars, and the Sun using the Law of Cosines. The formula for this is:
cos(E) = (a^2 + b^2 - c^2) / (2ab)

where E is the elongation angle, a is the distance from Mars to the Sun, b is the distance from Earth to the Sun, and c is the distance between Earth and Mars.

3. Plug in the values for a, b, and c. The average distance from Mars to the Sun is 227.9 million kilometers, and the distance from Earth to the Sun is 149.6 million kilometers.
cos(E) = ((227.9^2) + (149.6^2) - (54.6^2)) / (2 * 227.9 * 149.6)

4. Solve for E:
E ≈ 46.8 degrees

So, the maximum elongation of Earth as seen from Mars is approximately 46.8 degrees.

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The total displacement traveled by an ant walking along a road taken from the position versus time graph is

Δd = d2 - d1

Δd = Displacement

d2 = Final position

d1 = Initial position

For the first 5 seconds,

d2 = 10 cm

d1 = 2 cm

Δd = 10 - 2

Δd = 8 cm

For the next 5 seconds,

d2 = 10 cm

d1 = 10  cm

Δd = 10 - 10

Δd = 0

For the next 5 seconds,

d2 = 16 cm

d1 = 10 cm

Δd = 16 - 10

Δd = 6 cm

For the next 5 seconds,

d2 = 12 cm

d1 = 16 cm

Δd = 12 - 16

Δd = - 4cm

Total displacement = 8 + 6 - 4

Total displacement = 10 cm

Therefore, the total displacement traveled is 10 cm

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A. The research question is Does the new drug developed by Acme Labs cure headaches?

B. A hypothesis is "The new drug effectively cures headache in people diagnosed with headache.

C. In the experiment, The independent variable is the treatment the participants receive. The new drug for Group A and the placebo for Group B. The dependent variable is the pain rating measured in the clinic once per week.

In this research, the experimental and control groups in this study are similar given to the fact that both group are made up of people who have been diagnosed with headaches. Also, all of them have their pain rating measured in the clinic once per week.

The experimental group is group A since they are the ones receiving the new drug. This group will help the researchers to truly to assess the effectiveness of the drug, which is if it cures headache effectively.

The control group is group B because they are receiving a placebo. This group is used as a baseline or standard to compare the results of the experimental group to. If it shows that their headache has been cured, it would be because of something else other than the drug.

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Answer:

Explanation:

The mass of the person can be found by using the formula

\(m = \frac{p}{v} \\ \)

p is the momentum

v is the velocity

From the question we have

\(m = \frac{52}{0.8} \\ \)

We have the final answer as

Hope this helps you

frequency = velocity divided by wavelength

Ultraviolet (UV) radiation lies between wavelengths of about 400 nanometres and 10 nanometres, corresponding to frequencies of 7.5 × 1014 Hz to 3 × 1016 Hz.

\(\Large \boxed{\displaystyle density \ (kgm^{-3})=\frac{mass\ (kg)}{volume \ (m^3)} }\)

The amount of work done by a swimmer that swims 100m through the water with a force of 200 newtons is 20000J.

Work in physics refers to a measure of energy expended in moving an object; most commonly, force times distance i.e. W = F × d

It is said that no work is done if the object does not move.

According to this question, a swimmer swims 100m through the water with a force of 200 newtons. The amount of work done by the swimmer can be calculated as follows:

Work done = 200N × 100m

Work done = 20000J

Therefore, 20000J is the work done by the swimmer.

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The speed of the airplane at the top point during the circular motion is 44.27 m/s.

The passengers feel weightless, because they are experiencing a free fall at that point.

Radius of the circular path, r = 200 m

Acceleration due to gravity, g = 9.8 m/s²

The passengers feel weightless just above the floor when the plane is at the top of the circular path, because they are experiencing a free fall at that point.

So, the centripetal force is given by,

mv²/r = mg

v²/r = g

Therefore, the speed at the top point is,

v = √rg

v = √(200 x 9.8)

v = √1960

v = 44.27 m/s

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To solve problems involving waves, it's important to know the relationships between frequency, wavelength, and speed, which are given by the formulas v = f λ and T = 1/f, where v is the speed of the wave, f is the frequency, λ is the wavelength, and T is the period of oscillation.

The period of the tree is T=1/f= 1/58.0 Hz = 0.0172 s.

The wavelength of the wave is λ = 2 (crest to trough distance) = 2 (3.4 m)  = 6.8 m.

The speed of the sound wave is v = f λ = (285 Hz) (1.5 m) = 427.5 m/s.

The distance to the other side of the canyon is d = (speed of sound) × (time for echo to return) / 2 = (336.0 m/s) × (5.5 s) / 2 = 924 m.

The wavelength of the radio waves emitted by WKLB is λ = c / f = 3 x 10^8 m/s / 97.1 x 10^3 Hz = 3.09 m.

The speed of the water waves is v = λ / T = (7 m) / (3 s) = 2.33 m/s.

The wavelength of the water waves is λ = v T = (2.9 s) (2.33 m/s) = 6.74 m.

The frequency of the pulses is f = 1/T = 1/0.84 s = 1.19 Hz.

The speed of the wave is v = λ / T = (1.9 cm) / (0.95 s) = 2 cm/s.

The frequency of the sound wave is f = v / λ = 340 m/s / 2.3 x 10^-3 m = 1.48 x 10^5 Hz.

The speed of sound in air at 29.2°C is v = 331 m/s + (0.6 m/s/°C) × (29.2°C) = 349.5 m/s.

The wavelength of the sound wave is λ = v / f = (331 m/s + (0.6 m/s/°C) × (7.9°C)) / (40.7 Hz) = 8.06 m.

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Answer:

I do belive that it is B hrs cn I an gn

The ratio of rotational energy to the translational kinetic energy is 1:435.

The rotational energy of the ball is calculated as follows;

E = ¹/₂Iω²

where;

I = ²/₅MR²

I = ²/₅ x (0.0466)²(M)

I = 8.69 x 10⁻⁴ M

E =  ¹/₂Iω²

E =  ¹/₂(8.69 x 10⁻⁴ M)(62.9)²

E = 1.72 M

The translational kinetic energy of the ball is calculated as follows;

E = ¹/₂Mv²

E = ¹/₂ (38.7)²M

E = 748.85 M

Ratio of rotational energy to the translational kinetic energy is calculated as;

R = ( 1.72 M ) / ( 748.85 )

R = 1 : 435

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The molarity of 10% CaCl2 is 0.9%

concentration of the given salt CaCl₂ = 10%

Density of a solution = 1.0835 g/cm³

Volume = m / d

= 100 / 1.0835

= 92.29 litres

Density = mass / volume

1.0835 × 92.29 = mass

mass = 99.99 gram

Thus the molarity can be calculated by = moles of solute / volume of solution multiplied by 100

= 0.9008/ 92.29 X 100 %

= 0.009 X 100 %

= 0.9 %

The molarity of 10% CaCl2 is 0.9%

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Answer:

Charge quantization is the principle that the charge of any object is an integer multiple of the elementary charge.

Explanation:

Answer:

I’d say the air outside the hemisphere is more free than from the inside of the hemisphere.

Explanation:

hope this help!

Answer: B

Explanation: efficiency is the useful energy supplied; useful energy supplied doesn't not change,
work done stays constant

in order to to increase the power of the motor, time would have to be decreased to get the wanted result..

When he  increases the input power to the motor and repeats the experiment, work done stays the same but time taken decreases.

The quantity of energy moved or converted per unit of time is known as power in physics. The watt, or one joule per second, is the unit of power in the International System of Units. Power is also referred to as activity in ancient writings. A scalar quantity is power.

A motor's output power is calculated by multiplying its torque output by the angular velocity of its output shaft.

To lift a load through a vertical distance of 2.0m, in the both cases same amount of work-done happens because the displacement is same.

But as the input power, in second case, increases but the efficiency of the motor does not change, the time taken decreases ( as time taken = work done/power)

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So, to observe the red traffic light as yellow, the observer must approach the light with a speed of 0.148 times the speed of light.

When the observer approaches the red traffic light with a speed, the light appears shifted towards the blue end of the spectrum. The apparent frequency and wavelength shift is calculated using the Doppler effect equation.

The Doppler shift is given by the relation f′= f (v+vO)/c

where, f' is the observed frequency, f is the frequency of the wave, v is the speed of the observer, v O is the speed of the source and c is the speed of the wave.

For the red traffic light,

f= c/λ = 4.44 × 10^14 Hzλ

= 675 nm

For the yellow traffic light,

f = c/λ

= 5.22 × 10^14 Hzλ

= 575 nm

As we know that the light appears yellow when the red light shifts 575 nm.

Therefore, the observer should be approaching the light with a speed given by the relation as,

∆f/f = v/c⇒ ∆λ/λ

= v/c⇒ v

= c (∆λ/λ)

= c [(λ_0 - λ)/λ_0 ]

Where,λ is the wavelength of the shifted light (λ = 575 nm),λ0 is the wavelength of the unshifted light (λ0 = 675 nm)

Therefore,

v = c [(675 - 575)/675]⇒ v

= 0.148c

So, the observer must approach the red traffic light at a speed of 0.148 times the speed of light to observe it as yellow.

An observer, when approaching a red traffic light, experiences a shift in the light's wavelength towards the blue end of the spectrum. This apparent frequency and wavelength shift is given by the Doppler effect equation.

The Doppler shift can be expressed using the relation,

f′= f (v+vO)/c

where, f' is the observed frequency, f is the frequency of the wave, v is the speed of the observer,v O is the speed of the source and c is the speed of the wave.

The frequency and wavelength of the red and yellow traffic lights are,

f= c/λ

= 4.44 × 10^14 Hz,

λ = 675 nm and

f = c/λ

= 5.22 × 10^14 Hz,

λ = 575 nm.

Since we know that the light appears yellow when the red light shifts by 575 nm, the observer must be approaching the light with a velocity given by the following relation:

∆f/f = v/c⇒ ∆λ/λ

= v/c⇒ v

= c (∆λ/λ_0 ) where λ_0 is the wavelength of the unshifted light (λ_0 = 675 nm)

Therefore,

v = c [(675 - 575)/675]⇒ v

= 0.148c

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Cystic fibrosis is a recessive genetic disorder caused by a mutation in the CFTR gene. It affects the lungs, pancreas, and other organs, causing difficulties in breathing and digestive problems.

Hemophilia is an X-linked recessive genetic disorder that affects blood clotting due to mutations in clotting factor genes. Hemophilia A is caused by a mutation in the F8 gene while hemophilia B is caused by a mutation in the F9 gene.

Duchenne muscular dystrophy is an X-linked recessive genetic disorder caused by mutations in the DMD gene, which codes for a protein called dystrophin. It affects muscle function and leads to muscle weakness and wasting.

Huntington's disease is an autosomal dominant genetic disorder caused by a mutation in the HTT gene. It affects brain function, leading to psychiatric symptoms and movement problems.

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Cystic fibrosis -  autosomal recessive pattern, Hemophilia -  X-linked recessive pattern, Duchenne muscular dystrophy -  X-linked recessive pattern and Huntington's disease - autosomal dominant pattern.

Gene alterations that are essentially present in every cell in the body cause many hereditary diseases. These illnesses thus frequently impact many bodily systems, and the majority cannot be treated. To treat or manage some of the accompanying symptoms, there might be methods available.

Genetic disorders connected to mutations in genes on the X chromosome are referred to as having X-linked recessive inheritance. Because he contains just one X chromosome, a male who carries this mutation will be affected. A female who carries a gene mutation in one X chromosome but has a normal gene on the other X chromosome usually has no symptoms.

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Answer:

White light entering a prism is bent, or refracted, and the light separates into its constituent wavelengths. Each wavelength of light has a different colour and bends at a different angle. The colours of white light always emerge through a prism in the same order—red, orange, yellow, green, blue, indigo, and violet.

Answer:

B because Needs are things that are essential to life but wants are just extra.

Explanation:

For example food and water is needed for life but a want would be to have the latest I phone

A major difference between economic wants and economic needs is: B- Needs are more important to survival than wants.

Economic wants can be defined as the goods and services that are desired by consumers but are not important for their survival. Some examples of economic wants are mobile phone, automobile cars, computer, clothes, television, furniture, etc.

Economic needs can be defined as the goods and services that are required by the people or consumers for their daily survival. Some examples of economic needs are: shelter, food, water, land, air, etc.

In conclusion, economic wants are less important because they are just our different desires in life but economic needs are very important and significant for the daily survival of humans because they are the basics of life.

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The resistive torque that slows the turntable is 6.92 × 10^−1 Nm.

We can use the equation:

torque = (final angular velocity - initial angular velocity) / time / rotational inertia

Where:

final angular velocity = 0 rad/s (since the turntable stops)

initial angular velocity = (33 rpm) x (2π/60) rad/s = 3.46 rad/s (convert rpm to rad/s)

time = 50 s

rotational inertia = 1.0 × 10^−2 kg m^2

Plugging in the values:

torque = (0 - 3.46) / 50 / 1.0 × 10^−2 = -6.92 × 10^−1 Nm

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If a 0.25 kg ideal harmonic oscillator has a total mechanical energy of 5.8 j and the oscillation amplitude is 20.0 cm, the oscillation frequency is 2.17 Hz.

To find the oscillation frequency of the 0.25 kg ideal harmonic oscillator, we can use the formula:

E = (1/2)kA²

where E is the total mechanical energy, k is the spring constant, and A is the amplitude of oscillation.

We can rearrange this formula to solve for the spring constant:

k = 2E/A²

Substituting the given values, we get:

k = 2(5.8 J)/(0.2 m)² = 72.5 N/m

The frequency of oscillation can then be calculated using the formula:

f = (1/2π) √(k/m)

where m is the mass of the oscillator.

Substituting the values, we get:

f = (1/2π) √(72.5 N/m / 0.25 kg) = 2.17 Hz

Therefore, the oscillation frequency of the 0.25 kg ideal harmonic oscillator is 2.17 Hz.

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Answer:

The magnitude of the displacement is  \(H = 14.14 \ km\)

Explanation:

From the question we are told that

  The distance of the car to north is  d =  10 km

   The distance of car to the west is  w =  - 10 \  km

The negative sign is because the direction is  west

Generally applying Pythagoras theorem , the displacement is  

         \(H = \sqrt{d^2 + w^2}\)

=>      \(H = \sqrt{(10)^2 + (-10)^2}\)

=>     \(H = 14.14 \ km\)

To solve this problem, you can use the equations of motion for rotational motion under constant acceleration:

ωf = ωi + αt --(1)

θ = ωit + 0.5αt^2 --(2)

where ωi is the initial angular velocity, ωf is the final angular velocity, α is the angular acceleration, t is the time elapsed, and θ is the angular displacement.

Using equation (1), we can find the angular acceleration of the wheel:

α = (ωf - ωi)/t

= (30.0 rad/s - 10.0 rad/s)/20.0 s

= 1.0 rad/s^2

Using equation (2), we can find the total angular displacement of the wheel during the 20.0 seconds:

θ = ωit + 0.5αt^2

= 10.0 rad/s × 20.0 s + 0.5 × 1.0 rad/s^2 × (20.0 s)^2

= 400.0 rad

To find the time at which the wheel has undergone half of this angular displacement, we can use equation (2) again:

θ/2 = ωit + 0.5αt^2

Rearranging and solving for t, we get:

t = [(-ωi) ± sqrt(ωi^2 + 2αθ)]/α

Since we are looking for a positive time, we take the positive root:

t = [(-10.0 rad/s) ± sqrt((10.0 rad/s)^2 + 2 × 1.0 rad/s^2 × 400.0 rad)]/1.0 rad/s^2

≈ 12.4 s

Therefore, the answer is B, 12.4 s.

Answer:An inelastic collision is one in which the internal kinetic energy changes (it is not conserved). A collision in which the objects stick together is sometimes called perfectly inelastic because it reduces internal kinetic energy more than does any other type of inelastic collision.People sometimes think that objects must stick together in an inelastic collision. However, objects only stick together during a perfectly inelastic collision. Objects may also bounce off each other or explode apart, and the collision is still considered inelastic as long as kinetic energy is not conserved.

hope this helps have a nice day❤️

Explanation:

wavelength. is inversely proportional to the wave reciprocal centimeters. Wavelength is the distance between two consecutive peaks or troughs of a wave and is typically measured in units of meters, centimeters, or nanometers.

The reciprocal centimeter (cm⁻¹) is a unit used to measure the wave number, which is the number of waves per unit distance. As the wavelength of a wave decreases, its wave number increases, and vice versa. This means that the wavelength and wave number are inversely proportional to each other.

The relationship between wavelength and wave number is often used in spectroscopy to analyze the interactions of light with matter. By measuring the wavelengths of light absorbed or emitted by a sample, scientists can determine the chemical composition and structure of the sample.

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Answer:

deuteron

Explanation:

Answer:

C. The Third Picture

Explanation:

EDGE 2021

Answer:

129.12 ml

Explanation:

If answer is correct feel free to replay me for explanation.