is retractable measuring tape a simple machine?

Answer:

The volume of the object is 3.5cm³

Answer:

The option your looking for is C- Mars and Venus have similar atmospheres

Answer:

C: Mars and Venus have similar atmospheres.

Answer:

A (cytosine)

Explanation:

ACGT

One form of StyrofoamTM product, commonly used in craft projects, is Styrofoam balls. The spherical polystyrene foam objects known as Styrofoam balls range in diameter from one inch (2.54 cm) to eight inches (20.3 cm). The uses for Styrofoam balls in crafts are incredibly diverse.

Calculating the ball's volume using

V = 4/3 * pi * r3

r = 10 cm = 0.10 m.

V = 0.00418 m^3

The mass of the water with a volume of 0.0446 m3 is equal to m =??

V = 0.00418 m3,

and d = 1000 kg/m3.

m=V*dm=0.00418*1000=4.18 kg

then determining the styrofoam ball's mass.

V = 0.00418 m3

d = 32 kg per m3, which equals m = 0.00418 * 32 m = 0.1337 kg.

Finding the necessary mass to place on the ball's surface.

The distinction is what you'll need to put on the ball.

4.18 - 0.1337 = 4.046 kg ans.

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Answer:

y

Explanation:

I took the test

Answer:

its c...

Explanation:

letter y

Answer:

1) Given acceleration due to gravity as 10N/kg

N/kg is the same as m/s². From W=mg

making g subject ... you have g = W/m

where m is in kg and W is in N

hence we have N/kg

So g=10ms-²

Gravitational Potential Energy=mgh

At height 4m

PE=6 x 10 x 4

=240J.

At height 6m

PE=6 x 10 x 6

=360J.

2) KE=1/2mv²

=1/2 x 6 x 5² =75J

When the speed is doubled... it becomes 2x

so V = 2x5=10ms-¹

KE=1/2 x 6 x 10² =300J.

3) KE=1/2mv²

KE is given as 100J

mass=0.5kg

Making V the subject

you have v² =2KE/m

v²=2 x 100/0.5

v²=400

taking square root

v=20ms-¹.

Have a great day✌

A. To calculate the potential energy U of this arrangement, we need to consider the electrostatic potential energy between each pair of charges. The potential energy between two point charges is given by the formula:

\(U = k * q1 * q2 / r\)
where k is Coulomb's constant \((8.9875 * 10^9 N m^2 C^-2), q1\) and \(q2\\\) are the magnitudes of the charges, and r is the distance between them.

In this cubic arrangement, there are \(12\) pairs of adjacent charges with opposite signs (+q and -q), and the distance between them is the side length, d. The potential energy between these pairs is:

U_adjacent \(= -12 * k * q^2 / d\\\)

There are also 6 pairs of charges with opposite signs on the diagonals of the cube faces. The distance between them is \(√2 * d.\)The potential energy between these pairs is:

U_face_diagonal \(= -6 * k * q^2 / (√2 * d)\\\)

The total potential energy U of this arrangement is the sum of the potential energies of these pairs:

U = U_adjacent + U_face_diagonal
\(U = -12 * k * q^2 / d - 6 * k * q^2 / (√2 * d)\\\)

B. In part A, we found that the potential energy U is negative, which implies that the system is in a stable equilibrium. This negative potential energy represents the attractive forces between the oppositely charged ions (\(Na+\) and\(Cl-\)), which form a stable ionic crystal structure. The fact that ionic crystals exist in nature is due to this stable, negative potential energy that arises from the electrostatic attraction between the positive and negative ions.

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Answer:

\(0.361\ \text{m}\)

Explanation:

\(f_s\) = Frequency of source = 375 Hz

\(\Delta f\) = Difference between the maximum and minimum sound frequencies = 2.75 Hz

v = Speed of sound in air = 343 m/s

T = Time period = 1.8 s

\(v_m\) = Maximum speed of the microphone

We have the relation

\(\Delta f=2f_s\dfrac{v_m}{v}\\\Rightarrow v_m=\dfrac{\Delta fv}{2f_s}\\\Rightarrow v_m=\dfrac{2.75\times 343}{2\times 375}\\\Rightarrow v_m=1.26\ \text{m/s}\)

Amplitude is given by

\(A=\dfrac{v_mT}{2\pi}\\\Rightarrow A=\dfrac{1.26\times 1.8}{2\pi}\\\Rightarrow A=0.361\ \text{m}\)

The amplitude of the simple harmonic motion is \(0.361\ \text{m}\).

Watson adopted the conditioned reflex method of research established by Pavlov and Bekhtere.So option b is correct.

Watson embraced the research methodology of conditioned reflexes, which was pioneered by Ivan Pavlov and Vladimir Bekhterev. This approach involved investigating the connections between stimuli and responses by employing conditioning, wherein a previously neutral stimulus becomes linked to a particular response through repeated associations. Watson's contributions to behaviorism were significantly influenced by Pavlov's extensive research on classical conditioning.Watson was influenced by the work of both Pavlov and Bekhterev, and he adopted their methods of classical conditioning in his own research. He believed that all human behavior could be explained in terms of conditioning, and he conducted experiments on humans and animals to support his theory.

Watson's work on classical conditioning was instrumental in the development of behaviorism, which is a school of psychology that focuses on the study of observable behavior. Behaviorism is still an important school of thought in psychology today, and Watson's work continues to be influential.Therefore option b is correct.

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Answer:

(c) larynx

Explanation:

It is the region of the throat that contains the vocal cords and is used for swallowing, speaking, and breathing.

I am joyous to assist you at any time.

Answer:

larynx

Explanation:

The temperature of the cup of coffee decreased by -54°F over 22 1/2 minutes.

During the 22 1/2 minutes, the cup of coffee experienced a significant drop in temperature, reaching a decrease of -54°F. This change can be attributed to various factors such as heat loss to the surrounding environment, evaporative cooling, and thermal conduction. The rate of temperature change depends on the initial temperature, the temperature of the environment, and the insulating properties of the cup.

Factors like the volume of the coffee, the surface area of the cup, and the ambient temperature can also influence the rate of cooling. Overall, the coffee's temperature change demonstrates the thermodynamic principles of heat transfer and the tendency for objects to equilibrate with their surroundings.

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Answer:

UNIFORM VELOCITY :body is said to have uniform velocity if it covers equal distance in equal intervals of time in a particular direction, however, the time intervals may be small. ... Examples of the body moving with variable

Explanation:

NON UNIFORM VELOCITYWhen an object covers unequal distances in equal intervals of time in a specified direction, or if the direction of motion changes, it is said to be moving with a non-uniform or variable velocity. e.g., revolving fan at a constant speed has variable velocity.

Answer:

Explanation:

line graph

Answer: Re-Horakhty

Explanation:

He has a human body and a falcon head, he has a crown in form of a disk with a cobra on his head. Ra-Horakhty was thought of as the god of the rising sun.

Answer:

Chuck Yeager

Explanation:

The wavelength of the 905 MHz microwave frequency is approximately 33.15 cm, and the wavelength of the 2505 MHz microwave frequency is approximately 11.98 cm.

Wavelength = (Speed of light) / (Frequency)

The speed of light is approximately 3 x 10^8 meters per second, and we need to convert it to centimeters per second (1 meter = 100 centimeters). So, the speed of light in cm/s is 3 x 10^10 cm/s.

1. For the 905 MHz frequency:
Wavelength = (3 x 10^10 cm/s) / (905 x 10^6 Hz)
Wavelength ≈ 33.15 cm

2. For the 2505 MHz frequency:
Wavelength = (3 x 10^10 cm/s) / (2505 x 10^6 Hz)
Wavelength ≈ 11.98 cm

The wavelength of the 905 MHz microwave frequency is approximately 33.15 cm, and the wavelength of the 2505 MHz microwave frequency is approximately 11.98 cm.

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Answer:

V = 0.87 volt

Explanation:

Given that,

Charge, \(q=7.3\times 10^{-17}\ C\)

Electric potential energy, \(U=6.4\times 10^{-17}\ J\)

We need to find the value of electric potential at a point. The relation is as follows :

\(V=\dfrac{U}{q}\)

Where

V is electric potential

So,

\(V=\dfrac{6.4\times 10^{-17}}{7.3\times 10^{-17}}\\\\V=0.87\ V\)

So, the value of the electric potential at a point is equal to 0.87 Volts.

Explanation:

300m÷60s=5m/s

hope this can help maybe

Answer:

Q = k M T    where k is the absorption constant, Q the heat absorbed, M the mass involved and T the temperature change (for change in temperature)

Q1 = 4.18 kJ/kg * 1 kg * 273 deg K     heat contained

Q2 = 4.18 kJ/kg * .5 kg * 373 deg K     heat contained

Q1 = 1141 kJ deg K

Q2 = 780 kJ deg K

Q = Q1 + Q2 = 1921 kJ deg K

T = 1921 / (4.18 * 1.5) deg K = 306 deg K = (306 - 273) = 33 deg Celsius

(The total mass  is now 1.5 kg)

Answer:

156.28m

Explanation:

Given;

His displacement is 900 m 80° North of west

Let North and South represent y axis and west east represent axis.

the x component of his displacement vector can be written as;

dx = dcosθ

Where d is the resultant displacement = 900m

θ is the angle with the x axis = 80°

Substituting the values;

dx = 900cos80°

dx = 156.2833599002 m

dx = 156.28 m

the x component of his displacement vector is 156.28m

Answer:

[5710 RPM]

Explanation:

Astronomer have concluded that pulsars are  ones that spin particularly rapidly, hundreds of times per second.

Millisecond pulsars are ones that spin particularly rapidly, hundreds of times per second. Pulsars are the measure of the movement and rotation of stars in the space. It considers the spin rotation of star in the galaxy with respect of the rotation of other celestial objects in the galaxy. Pulsars have very strong magnetic fields which funnel jets of particles out along the two magnetic poles. These neutron stars spin and create a very powerful beam of light. Since, it is understood that neutron star can never die as they are already dead and float in the galaxy. Hence, we can conclude that astronomer have concluded that pulsars are  ones that spin particularly rapidly, hundreds of times per second.

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Answer:

in the ball

Explanation:

potential energy is where an object has energy, always, but it isn't always moving, and when you drop the ball, it has kinetic energy.

Answer:

v' = 1.21 m/s

Explanation:

Mass of a green ball, m = 0.525 kg

Mass of a blue ball, m' = 0.482 kg

Initial velocity of green ball, u = 2.26 m/s

Initial velocity of blue ball, u' = 0 (at rest)

After the collision,

The final velocity of the green ball, v = 1.14 m/s

We need to find the final velocity of the blue ball after the collision if the collision is head on. Let v' is the final velcity of the blue ball. Using the conservation of momentum to find it :

\(mu+m'u'=mv+m'v'\\\\0.525 (2.26)+0=0.525 (1.14)+0.482v'\\\\0.588=0.482v'\\\\v'=\dfrac{0.588}{0.482}\\\\v'=1.21\ m/s\)

So, the final velocity of the blue ball is 1.21 m/s.

Answer:

A

Explanation:

Liquid water changes into water vapor because of an increase in the kinetic energy of the particles option (C) is correct.

A material changing from one physical form to another is known as a change of state.

When heated or cooled, the matter may transform from one state to another. When heated, ice (a solid) turns into water (a liquid).

This process is known as MELTING. When heated, the water turns into steam (a gas).

Thus, liquid water changes into water vapor because of an increase in the kinetic energy of the particles option (C) is correct.

The question is incomplete.

The complete question is:

Which of the following causes liquid water to change into water vapor?

A. a decrease in the motion of the particles

B. a decrease in the randomness of the particles

C. an increase in the kinetic energy of the particles

D. an increase in the attraction between the particles

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Answer:

they do not function appropriately in the tissue or organ they are a part of.

The statement that is true about cancer cells is They do not function appropriately in the tissue or organ they are a part of. Option C is the correct answer.

Cancer cells differ from normal cells in several ways. One of the key characteristics of cancer cells is that they lose their normal function and behavior within the tissue or organ they originate from. Option C is the correct answer.

Normal cells have specific roles and functions within the body, contributing to the overall health and proper functioning of the tissue or organ they are a part of. In contrast, cancer cells undergo a series of genetic mutations that disrupt their normal function. These mutations can lead to uncontrolled cell growth and division, which is a hallmark of cancer. As a result, cancer cells no longer perform the specialized functions of the tissue or organ they are derived from, and they can interfere with the normal functioning of nearby healthy cells.

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The complete question is, "What is TRUE about cancer cells?

a. They are just like normal cells except for the way they function.

b. They form an encapsulated tumor that keeps them in one area of the body

c. They do not function appropriately in the tissue or organ they are a part of.

d. The mutations in cancer cells are caused by environmental factors."

Answer: :’)

Explanation: