Why is the searching of the houses done by the poorer whites of the community?

Answer:

control group and experimental group

The following are the seven heavenly bodies that the ancient astronomers could observe with the unaided eye: Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn

Step by step explanation:

Planets are some of the seven heavenly bodies that ancient astronomers could observe with the unaided eye besides the stars. The Greeks knew these seven as planets, which means wandering stars. In their nighttime skies, the planets, unlike the stars, moved. The names of the planets were taken from ancient Roman mythology. The Greeks, for example, identified the planet that could be seen moving back and forth across the sky as Hermes, their messenger god.

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Answer:

Density = Mass / Volume

Mass = .3 kg

Volume = 2 * 5 * 4 = 40 m^3

Density = .3 g / 40 m^3 = .0075 kg / m^3

1 kg/m^3 = kg * 1000 g / kg / (1 m^3 * (100 cm/m)^3) = 10E-3  gm/cm^3

Density = 7.5 E-3 gm/cm^3

An audience member covers her ears during a loud concert shows evidence that matter can reflect waves.

An audience member covers her ears during a loud concert is an event that provides evidence that matter can reflect waves because a sound is heard again and again due to the reflection of waves. This repetition of sound is due to the property of reflection of sound waves.

So we can conclude that an audience member covers her ears during a loud concert shows evidence that matter can reflect waves.

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Answer:

A laser beam bounces off a series of mirrors

Explanation:

Answer:

64.4 m

Explanation:

First, find how long it takes to land.  Given in the y direction:

Δy = 0 m

v₀ = 27 m/s sin 60° ≈ 23.4 m/s

a = -9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

0 m = (23.4 m/s) t + ½ (-9.8 m/s²) t²

t = 4.77 s

Next, find how far it travels in that time.  Given in the x direction:

v₀ = 27 m/s cos 60° = 13.5 m/s

a = 0 m/s²

t = 4.77 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (13.5 m/s) (4.77 s) + ½ (0 m/s²) (4.77 s)²

Δx = 64.4 m

Velocity, acceleration, force, and displacement, have magnitude and direction (ie vector quantity) in common

This is a which have both magnitude and direction. Example include:

This is a quantity which has magnitude but no direction. Example include:

From the above, we can see that velocity, acceleration, force, and displacement, have magnitude and direction (ie vector quantity) in common

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Your question is incomplete. Please find below the complete question.

B. Its acceleration is 9.8 m/s^2 down.

Acceleration, is the rate at which speed adjustments with time, in phrases of pace and path. A point or an item moving in a line is expanded if it hurries up or slows down.

We always have a vertical (downward ) acceleration of 9,8 m/s^2. The horizontal acceleration is zero in case you overlook friction forces. The vertical issue of speed is zero on the top of the trajectory whilst the horizontal component isn't like zero in any other case the apple will no longer arrive at your buddy.

You toss an apple across the room to a friend. Which of the following statements is true about the apple at the top of its trajectory?

A. Its acceleration is zero.

B. Its acceleration is 9.8 m/s2 down.

C. The horizontal component of its velocity is zero.

D. The vertical component of its velocity is 9.8 m/s down.

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2nd egg experienced more impulse

Hope this helps! :)

As the given statement is False. As a substance that heats up relatively quickly must has a high specific heat capacity.

A physical property of matter is specific heat capacity. The quantity of heat energy required to raise a substance's temperature per unit of mass is known as the specific heat capacity. It serves as an illustration of a large property. Since the scale of the system under study directly affects it. Therefore, it is the amount of heat absorbed by the substance per unit mass when its temperature is elevated. Specific Heat Capacity is measured in J/(kg K) or J/(kg °C) units.

As heating is quick when the substance have high specific heat capacity and the heating will be slow when the substance have less specific heat capacity.

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The purpose of the balloon car project is to demonstrate fundamental principles in physics, specifically Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction.

This project engages students in hands-on learning and encourages creativity in designing and constructing their own balloon-powered cars.The balloon car project involves attaching a partially inflated balloon to a small car made from lightweight materials, such as plastic bottles, cardboard, or foam. When the balloon is inflated and released, the escaping air propels the car forward. This demonstrates how the force exerted by the air leaving the balloon (action) causes an equal and opposite force on the car (reaction), causing it to move. In addition to teaching physics concepts, the balloon car project also fosters critical thinking, problem-solving, and teamwork skills. Students can experiment with different car designs, materials, and balloon sizes to optimize the car's speed and distance traveled. They can also collaborate with classmates, discussing ideas and learning from each other's experiences. Overall, the balloon car project serves as an engaging and interactive way to teach students important scientific concepts and develop essential skills that will benefit them in their future education and career pursuits.

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The most highly redshifted electromagnetic radiation that astronomers have detected to date is from the radiation left over from the Big Bang.

Radiation travels in waves and possesses both an electric and magnetic field. Both natural and artificial sources contribute to it. The energy levels of electromagnetic radiation can range from low to high. It consists of x-rays, gamma rays, infrared light, visible light, ultraviolet light, radio waves, and microwaves. Also known as EMR, electromagnetic radiation (EMR) is a category of energy carried by waves of the electromagnetic (EM) field that travel across space. These waves include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. The electromagnetic spectrum includes all of these waves. Electromagnetic radiation is often made up of electromagnetic waves, which are coordinated oscillations of electric and magnetic fields. Due to the periodic alteration of the electric or magnetic field, electromagnetic radiation or waves are produced.

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The angular velocity of the disk is 31.6 rad/s, the tangential acceleration at the edge of the disk is 94.8 cm/s^2, & the centripetal acceleration of a point at the edge of the disk is 12,578.88 cm/s^2.

(a) The angular velocity of the disk can be found using the equation:

ω = ω0 + αt

where ω0 is the initial angular velocity (which is zero), α is the angular acceleration, and t is the time. Plugging in the values, we get:

ω = 0 + 7.9 rad/s^2 × 4 s = 31.6 rad/s

(b) The tangential acceleration at the edge of the disk can be found using the equation:

at = rα

where r is the radius of the disk. Plugging in the values, we get:

at = 12 cm × 7.9 rad/s^2 = 94.8 cm/s^2

(c) The centripetal acceleration ac of a point at the edge of the disk can be found using the equation:

ac = rω^2

where ω is the angular velocity we found in part (a). Plugging in the values, we get:

ac = 12 cm × (31.6 rad/s)^2 = 12,578.88 cm/s^2

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Answer:

0.57 kg

Explanation:

We are given that

Force, F=20 N

Acceleration ,a =\(35m/s^2\)

We have to find the mass of Aero-plane.

To find the value of mass we will divide the force by acceleration.

We know that

Force, F=ma

Using the formula

\(20=m\times 35\)

\(\frac{20}{35}=m\)

\(m=0.57 kg\)

Hence, the mass of the aero-plane=0.57 kg

Answer

U Max velocity= Potential energy= kinetic energy

The potential energy is the product of mass * acceleration due to gravity * height

The kinetic energy is the product of 1/2 mass* square of velocity.

Max Velocity=mgh= 1/2mv^2

Mass is given as 62kg, height =1.2m and g= 9.8m/s^2

62kg* 9.8m/s^2*1.2= 1/2*62kg* v^2

729.12=31v^2

V^2= 729.12/31 =23.52

V^2=square root of 23.52

V= 4.85m/s

A toroid is a donut-shaped object, like a ring or doughnut, that is formed by rotating a closed curve around an axis. It can also refer to an electrical device with a circular or doughnut-shaped coil.

When you ride your scooter, you have momentum which is determined by your mass and velocity. Momentum is a vector quantity, meaning it has both magnitude and direction.

When you ride twice as fast, you have twice the velocity, which results in a change in momentum.The relationship between velocity and momentum is direct. Therefore, when you ride twice as fast, you have twice the momentum. This means that the correct answer is option c. You will have twice the momentum when you ride twice as fast on your scooter.It is important to note that momentum is conserved in a closed system, which means that the total momentum before and after the event remains the same.

Therefore, if you were to ride your scooter into a wall, your momentum would be transferred to the wall, causing you to stop abruptly. When you ride your scooter, you have momentum. Momentum is the product of an object's mass and velocity (p = mv). If you ride twice as fast, your velocity doubles. In this case, your momentum also doubles, since the mass remains the same. Therefore, the correct answer is c. twice the momentum.

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17.01 m/s is the car’s velocity .

s=ut+at²/2

s-at²/2=ut

u=s-at²/2÷t

u=312/18.4

u=17.01 m/s

"The rate at which an item changes its location" is described by a vector number called velocity. Imagine someone walking swiftly, one step forward, one step back, and starting each step from the same location. Velocity is a vector quantity. Therefore, velocity is cognizant of direction. The direction must be taken into account when determining an object's velocity. A velocity of 55 miles per hour is not adequate information. It is necessary to account for the direction in order to accurately describe the object's velocity. Simply put, the direction of the velocity vector represents the motion of the object.

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The force that pushes groundwater from pore space to pore space when below the water table is primarily due to the pressure gradient within the aquifer. This pressure gradient is caused by the weight of the overlying water and the force of gravity.

Below the water table, the spaces between soil or rock particles are filled with water. These spaces are known as pore spaces. The water table represents the upper surface of the saturated zone, where all the pore spaces are filled with water. gravity acts vertically downward, causing the weight of the water above a particular point to exert a downward force. As a result, the water pressure increases with depth. This increase in pressure creates a pressure gradient within the aquifer.

The pressure gradient drives the flow of groundwater from areas of higher pressure to areas of lower pressure. When a well is drilled into the aquifer below the water table, water will naturally flow into the well and rise to the level of the water table. This is because the pressure is higher below the water table compared to the lower pressure in the well.

The movement of groundwater from pore space to pore space occurs due to the pressure difference between adjacent spaces. Water will flow from areas of higher pressure to areas of lower pressure until the pressures equalize. This movement of water is known as groundwater flow or hydraulic conductivity.

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Answer:

Vx=15.3*cos65°=6.47m/s

Explanation:

Vx=15.3*cos65°=6.47m/s

Vy=15.3*sin65°=13.87m/s

Answer:

1500N

Explanation:

Answer

4

Explanation:

four rays can also explain the ray diagram if the object is at infinity

A car's capacity for gas is influenced by its size. Gas tanks for smaller cars typically hold 12 gallons, but those for larger cars can carry 15 or 16 gallons.

The legal definition of a US liquid gallon, commonly referred to as "gallon," is 231 cubic inches, or precisely 3.785411784 litres. At 3.98 °C (39.16 °F), a US liquid gallon can hold around 3.785 kilograms or 8.34 pounds of water, which is roughly 16.7% less than an imperial gallon.

4 quarts, 8 pints, or 128 fluid ounces make up a gallon.

One liter of liquefied petroleum gas weighs 0.500 kg. 2 Litres can hold 1 Kilogram. - Liquefied Natural Gas: 0.592 kg are contained in 1 litre. 1.689 litres are contained in 1 kilogram.

Calculation of gasoline cost per km: Fuel cost per km equals fuel cost per liter, kilogram, mile, or amount of fuel consumed.

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Answer:

Try lookin those questions up on Brainly

Explanation:

Answer:

Radiology plays a huge role in disease management by giving physicians more options, tools, and techniques for detection and treatment. Diagnostic imaging allows for detailed information about structural or disease-related changes. With the ability to diagnose during the early stages, patients may be saved.

Explanation:

The amplitude of the subsequent oscillations is 4.898m.

Solution:

m = 0.850 kg

k = 13.0 N

0.32 = \(\sqrt{\frac{13.5}{0.75}*A }\)

= √13.5/0.75

A = 4.898m

Oscillation is defined as the process of repeating fluctuations of a quantity or measure around its time equilibrium value. Oscillation can also be defined as the periodic fluctuation of a material between two values ​​or its mean value.

Waves are said to vibrate. This means regular and repeated round trips. This variation can occur between extremes of position, force, or quantity. Different types of waves have different types of vibrations. Longitudinal wave oscillates parallel to the direction of the wave. Vibration alternates back and forth between two positions or states.

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If the final potential difference across the 69micro -f then capacitor is 40Mf

We cannot expect simple energy conservation to hold because energy is presumably dissipated as heat in the connection wires or as radio waves while the charge oscillates during the system "settling down" to its final state (40V across the parallel pair of capacitors C and 60 F).

We anticipate that charge will be conserved. Thus, if Q is the initial charge stored on C and q 1 and q2 are the charges on the parallel pair after "settling down," then -

Q= q1+ q2

C(100V) = C(40V) + 60mf(40V)

C= 40Mf

An electrical component that stores electrical energy in an electric field is known as a capacitor. It is made up of two conductive plates separated by a nonconductive material known as a dielectric.

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Answer:

it must move back and forth during sex

Answer: 20mm/s

Explanation: Maximum displacement in shortest time....