we observe stars orbiting at distances of 25000 light years from the centers of galaxy x and galaxy y for this orbital distance stars in galaxy x have higher orbital speeds tan stars in galaxy y what can we conclude

Ahmed should use Dish A because it has greater exposed surface area than Dish B, hence the hot water vapour from the jelly will evaporate faster and the jelly will cool faster.

Evaporation is the process through which water gains heat and escape from the liquid surface in form of vapour.

There are three basic factors that affects the rate of evaporation, and they include;

The greater the exposed surface area of the container, the greater the rate of evaporation.

The exposed surface area of Dish A is calculated as;

A = 30 cm x 45 cm

A = 1,350 cm²

The exposed surface area of Dish B is calculated as;

B = 15 cm x 40 cm

B = 600 cm²

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Answer:

Below

Explanation:

Momentum = m * v

80 000 *2   =  4000 *40

160 000     =   160 000          they have the same momentum

In engineering field and the Physics of elasticity, compressibility is the inverse of bulk modulus

Compressibility in a lay man language can be refer to the application of pressure on an object in order to reduce the size of the object.

But in the field of engineering, compressibility can simply be define as a reciprocal of bulk modulus of an elastic material.

Bulk Modulus = Force / Area in which the S.I unit will be N/m²

Since compressibility is the inverse of bulk modulus, its S.I unit will be reciprocal of the bulk modulus unit. That is,

m²/N which is also known as Byjus

Therefore, the S.I unit of compressibility is Byjus

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All the non zero digits are significant and 9*10^-1 has 3 significant figures. Leading zeros and succeeding zeros are not significant.

Rules to find significant digits. 0.175 has 3 significant figures, 1930000 has 3 significant figures, 0.045 has 2 significant figures. Zeros after decimals are significant, provided they must have a significant figure(s) on the left side of them. Example-5.730 has 4 significant figures.

40.038 has 5 significant figures. All constants or exponential nos. and trigonometric angles are not significant. Example- 50° has no significant figure. Speed of light-3*10^8 m/s have no significant figures. 14*10^7 have 2 significant figures.

Zeros between two significant figures are significant. Example-40.0 have 3 significant figures. All amounts like 4 apples ,7 children have infinite no.of significant figures.

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Amy is right in saying that blowing the tea will cool it down.

When you blow on a hot liquid, such as tea, the air you blow over the surface of the liquid carries away some of the heat energy from the liquid. This causes the liquid to cool down. The cooling effect is greater the greater the difference in temperature between the liquid and the air.

Blowing on a hot object cools it down by increasing the rate of heat transfer from the object to the surrounding air. Heat is transferred from a hotter object to a cooler one through conduction, convection, and radiation. When you blow on a hot object, the air you blow over the surface of the object carries away some of the heat energy from the object through the process of convection.

So, blowing on the tea will help cool it down faster which means Amy is correct in suggesting that blowing on the tea can help cool it down.

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Let us cut the work done on gas as we move along the direct path

W=-(-area undercurve),=-[(1.00atm)(4.l-2)+1/2(4-1)(4-2)],W=-5atm

The change in internal energy=-88.5J

What does physics mean by internal energy?

In thermodynamics, internal energy is a property or state functional that characterises a substance's energy in the absence of capillary effects and the impacts of external magnetic, electric, and other fields.

What makes it internal energy?

Internal Energy is the energy in a thermodynamics that is NOT either the system's total kinetic energy or the gravitational potential energy. The system's internal freedom levels are connected to the internal energy.

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This reduces the force of the impact on the egg, limiting the amount of damage it receives.

What is force ?

Force is an influence that can cause a change in the motion, direction, or shape of an object. It is a vector quantity, meaning it has both magnitude and direction. Forces are a result of interactions between objects, and can either be a push or a pull.

Force can cause an object to accelerate, decelerate, or remain in its current state of motion. Examples of forces include gravity, friction, electromagnetism, and the normal force. Force is measured in units of Newtons (N).

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The minimum value of the coefficient of static friction is 0.87.

The minimum value of the coefficient of static friction is calculated by applying the formula for Newton's second law of motion as shown below.

Mathematically, the formula for Newton's second law of motion is given as;

F (net) = ma

Wsin (θ) - μW cos (θ) = ma

Where;

Wsin (θ) - μW cos (θ) = ma

mgsin (θ) - μmg cos (θ) = ma

gsin (θ) - μg cos (θ) = a

If the block is stationary, then acceleration of the block = 0

gsin (θ) - μg cos (θ) = 0

μgcos (θ) = gsin (θ)

μ =  gsin (θ) / gcos (θ)

μ =  sin (θ) / cos (θ)

μ =  tan (θ)

The minimum value of the coefficient of static friction is calculated as;

μ =  tan (41)

μ =  0.87

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An inductor and a resistor are connected in a simple series circuit. If the inductance increases, the current in the circuit decreases. The correct answer is b.

An inductor is a passive component that stores energy in a magnetic field when electric current flows through it. In a series circuit, the current flows through both the inductor and the resistor. When the inductance of the inductor increases, the opposition to the current flowing through it also increases, known as inductive reactance. This results in a decrease in the current flowing through the circuit, as more energy is being stored in the magnetic field of the inductor and less is available to flow through the resistor.

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The combined speed of the catcher and the ball is 0.047 m/s.

In the case of the question that we have here, we would need to apply the principle of the conservation of linear momentum. It is the principle that stresses the fact that the momentum before collision must be the same as the magnitude of the momentum after collision.

We then have that;

Momentum before collision = Momentum after collision

(0.145 * 31.29) + (95.9 * 0) = (95.9 + 0.145)v

v = the combined speed

Then we have;

4.54 = 96v

v = 4.54/96

v = 0.047 m/s

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Answer:

Aaaasaasaaaaaaaaaaaaaaaaaaaaaaaaa

EVs lack an internal combustion engine, also confusingly referred to as BEVs (battery electric vehicles), which transform gasoline into propulsion power.

Instead, they only use the power from one or more sizable batteries to operate. When it comes to EVs, hybrids were the first significant market entrant, especially after the Prius' international launch in the early 2000s. These cars mastered the technique of alternating between an internal combustion engine and an electric motor to increase fuel efficiency. A plug-in hybrid electric vehicle (PHEV) is designed to run on both gas and battery power and is essentially a hybrid of an EV and an HEV. The main distinction is that they are more EV-like because the power is provided via plug-in chargers.

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The most effective way for an inactive student to become more physically active is to make a schedule and stick to it. This can involve setting aside specific times for exercise each day.

Starting with small goals and gradually increasing the duration and intensity of their physical activity can also be helpful. Including physical activity into their daily routine like taking the stairs instead of the elevator or going for a walk during lunch, can make it easier to fit exercise into their busy schedule.

Physical fitness is important for a number of reasons like improved Health, better mental health, increased energy, improved sleep and better brain functioning.

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1) From 0 to 3sec , the object is a)increasing in speed ; 2) From 3 - 6 sec, object is c) neither ; 3) From 6 - 10 sec, object is b) decreasing in speed.

Speed is the distance covered in an unit of time whereas acceleration is the rate of change of the speed. The unit of speed is meters per second (m/s) and that of acceleration is meters per second squared. Speed is a scalar quantity but acceleration is a vector quantity.

Speed is defined as the rate of change of distance. Velocity is the rate of change of displacement (change of distance in particular direction with respect to time) and acceleration is rate of change of velocity per unit time.

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An HEV, or hybrid electric vehicle, is a type of vehicle that works by combining a traditional gasoline-powered engine with an electric motor that is powered by a battery.

The electric motor and battery are used to supplement the gasoline engine, allowing the vehicle to operate more efficiently and using less fuel.

The electric motor is used to power the vehicle at low speeds and during acceleration, while the gasoline engine is used at higher speeds and to keep the battery charged.

By using both sources of power, an HEV is able to work better fuel economy than a traditional gasoline-powered vehicle, making it a great choice for those looking to reduce their environmental impact.

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Astronomers use a variety of techniques to find asteroids that may be on a collision course with Earth. Some of them are by using optical telescopes and infrared telescopes, and radio telescopes. Once an asteroid is detected, astronomers use its position and velocity data to calculate its orbit and determine if it poses a threat to Earth.

Optical telescopes are equipped with cameras that can take images of a large area of the sky at once. The images are then compared over time to identify asteroids that are moving in relation to the stars.

Infrared telescopes are useful for finding asteroids that are in the inner solar system, where they are closer to the sun and therefore warmer. This is particularly useful for finding asteroids that are difficult to detect using traditional optical telescopes, as many asteroids are dark and therefore do not reflect much light.

Radio telescopes involve bouncing radar waves off asteroids and measuring the time it takes for the waves to return. By analyzing the radar data, astronomers can determine the asteroid's distance and speed, as well as its size and shape.

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Answer:

Lincoln town car (luxury Ford car)

used commonly for taxi/limos

like around 1995

edmunds

The mine shaft has been found to be exactly about 84 m deep.

Let us know that in this case, we have to look at the equation of the motion that is taking place under gravity. This is because, we we can see, the shaft that we have would appear to have been falling freely under the influence of the force of gravity.

We have;

h = ut + 1/2gt^2

h = height

u = initial velocity

g = acceleration due to gravity

t = time taken

Given that u = 0 m/s

h = 1/2gt^2

h = 0.5 * 9.8 * 4.2^2

h = 84 m

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Answer:

Below

Explanation:

d = 1/2 a t^2

.80 = 1/2 ( 5.8 x 10^?) t^2  

  ( I think you left off the exponent...and acceleration has units m/s^2  ...not m/s)

t =  .166 s

v = at = 58 x .166= 9.63 m/s

The answers include the following below:

These are elements that have partially filled d orbitals and occupy a central block in the periodic table.They have high melting points and boiling points and are good conductors of heat and electricity.

There are thirty eight elements in this group and only three is able to produce a magnetic field and they include iron, nickel and cobalt.

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Answer:

F

=

m

Δ

v

t

force = mass * change in velocity / time

at

1

s:

mass:

40

kg

change in velocity (taking downwards as a positive direction):

4

m/s to rest

=

4

−

0

=

4

m/s

time:

1

s

m

Δ

v

t

=

160

1

=

160

force applied

=

160

N

at

0.1

s:

m

Δ

v

t

=

160

0.1

=

1600

force applied =

1600

N

At interval (0, 2) and (6, 10),  the acceleration will be increasing.

Acceleration is the rate of change of velocity with respect to time.

The acceleration is given by y = 7*sin( x*[tex]\pi[/tex]/4).

to find at which interval the acceleration is increasing,

First, let's study about the sin function:

Sin(θ) increases between -[tex]\pi[/tex]/2 and [tex]\pi[/tex]/2

Sin(θ) decreases between [tex]\pi[/tex]/2 and (3/2)*[tex]\pi[/tex].

Here we have:

θ = x*([tex]\pi[/tex]/2)

When x = 0, θ = 0.

And sin(θ) is increasing in θ = 0.

Then we must choose one of the options that start with x = 0.

now it will stop increasing when:

θ = [tex]\pi[/tex]/2 = x*([tex]\pi[/tex]/4)

x = 2.

So the acceleration is increasing in the segment (0,2)

And it will start increase again when:

θ = (3/2)*[tex]\pi[/tex] = x*([tex]\pi[/tex]/4)

(3/2)*[tex]\pi[/tex]*(4/[tex]\pi[/tex]) = 6 = x.

So at x= 6 the acceleration starts increasing again, and the acceleration is only defined until x = 10,

Therefore

the correct option is: (0, 2) and (6, 10)

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In order to find the magnitude of the electric field at the origin, you need to use the equation E = q/4πεr², where q is the charge, ε is the permittivity of space, and r is the distance from the origin.

To calculate the electric field, you must first determine the charge of the particle, then determine the distance to the origin, and finally, use the equation to calculate the magnitude of the electric field.

Once you have the magnitude of the electric field at the origin, you can then use it to explore the behavior of other electric fields in the area.

To calculate the magnitude, you must first determine the values of k, q, and r, then plug them into the equation and solve. The resulting answer will be the magnitude of the electric field at the origin.

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A

good examples of a moist passageway that does oxygen exchange are your throat, heart, and nostrils. (simplified answer)

The force exerted by the biceps muscle would be equal to the weight of the carton of milk, which is 2.00 kg or 19.6 Newtons of force.

What is the force?

Force is an action that can cause an object to move, stop, or change its direction or shape. It is defined as a vector quantity, meaning it has both magnitude and direction. Forces can be either contact forces, like pushing or pulling, or forces at a distance, such as gravity, electricity, or magnetism.

Assuming the arm is straight out from the body and the length of the arm is 30 cm, the force exerted by the biceps muscle would be approximately 20 Newtons.

In this case, the force is equal to the weight of the carton of milk (2.00 kg) multiplied by the acceleration due to gravity (9.8 m/s2). This gives a force of 19.6 Newtons. Multiplying this force by the length of the arm (30 cm) gives a torque of 588 Nm.

Assuming the biceps muscle can generate a maximum torque of 600 Nm, the force it must exert to hold the carton of milk at arm's length would be 19.6 N x (600 Nm / 588 Nm) = 20 N.

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The acceleration of the soccer ball is determined as 400 m/s².

The acceleration of the soccer ball is calculated by applying Newton's second law of motion as follows;

Mathematically, the formula for Newton's second law of motion is given as;

F = ma

where;

The acceleration of the soccer ball is calculated as;

a = ( F ) / ( m )

a = ( 200 N ) / ( 0.5 kg )

a = 400 m/s²

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The speed of the two-cart system’s center of mass during the collision in Trial 1: Does not change, and in Trial 2: Decreases.

In Trial 1 of the experiment, the carts collide elastically and the speed of the two-cart system's center of mass does not change during the collision. In Trial 2, the carts stick together and the collision is inelastic. Some of the kinetic energy is converted into internal energy, resulting in a decrease in kinetic energy and the speed of the center of mass. In conclusion, the speed of the center of mass does not change during the collision in Trial 1, but, decreases in Trial 2 as a result of a decrease in the kinetic energy.

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You will not stop before you hit the spill.

Your braking distance is 10.8 m.

The minimum distance you can travel at the maximum braking force is calculated as follows;

Apply the principle of work energy theorem as follows;

K.E = W

¹/₂mv² = Fd

where;

¹/₂(5)(5.5)² = 7d

75.625 = 7d

d = 75.625 / 7

d = 10.8 m

Hence, you will hit the spill since 10.8 m is greater than 10 m.

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