some give me atleast 5

The velocity of the car will be 36.8 m/s when it has traveled a distance of 70 cm.

The velocity at any moment in time during a particle's motion is given by instantaneous velocity, a continuous function of time. By calculating the derivative of the position function, which gives us the functional form of instantaneous velocity v, we may determine the instantaneous velocity at a certain time (t).

Velocity is a vector quantity.

SI unit is m/s.

According to the question, the Given values are :

Distance =40 cm

=0.4 meter

Velocity, v =2105.3 cm/s

=21.053 m/s

21.053=0.4/t

⇒t=0.4/21.053

t=0.019 seconds

Now, the distance is 70 cm

=0.70 meters

v=0.7/0.019

v=36.8 m/sec

Hence, the velocity will be 36.8 m/sec when it has traveled a distance of 70 cm.

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Answer:

through the use of a Gold leaf electroscope

Answer:

1. 7,230,000

2. -8,120

3. 45.21

4. 61,240,000

5. 8,470

6. 956,300

7. 1,250,000,000

8. 63,330

9. 455,000

Its been a while since I learned this so Im really hoping that I remembered it correctly.

Answer:

(Option B)The car travels 15km in 15 minutes.

Explanation:

Notice that the speed is written using units of km/h and the time is written using units of minutes.

Convert the time interval to hours. Remember that 1 hour equals 60 minutes:

15 min = 15 min × \(\frac{1h}{60~min}=0.25h\)

The distance d that a particle travels during a time t if it moves at an average speed v is given by the formula:

d = v · t

Replace v=60km/h and t=0.25h to find the distance traveled by car:

\(d=(60\frac{km}{h}) ~x~(0.25h)=15km\)

Therefore, the car travels 15km in 15 minutes.

Hope this helps!

If you have any queries please ask.

Answer:

The origin of science can be traced back to ancient Egypt and the Mesopotamia from about 3500 to 3000 BC. The achievements of these two civilizations in mathematics, astronomy, and medicine have reached and shaped the Greek natural philosophy in the classical era, and they usually formally try to explain events in the material world with natural causes . After the fall of the Western Roman Empire, in the first few centuries of the Middle Ages (approximately 400-1000 AD), knowledge about the ancient Greeks’ world concepts was gradually forgotten in Western Europe , while in the Muslim world of the Golden Age of Islam Was preserved in. From the 10th century to the 13th century, Western Europe retrieved the writings of ancient Greece and absorbed the research of Islamic scholars. Natural philosophy was revived, and then transformed in the scientific revolution that began in the 16th century The new ideas and discoveries during this period broke away from ancient Greek ideas and traditional methods. The rapid role of scientific method in acquiring knowledge, but the institutionalization and professionalization of science did not begin to take shape until the 19th century

Answer:

D- fuerza nuclear fuerte

Explanation:

Answer:

Electrical energy is transformed into heat and light energy

Explanation:

hope this helps

Answer:

process of recombination

Explanation:

this process happens when 2 molecules of DNA exchange pieces of their genetic material with each other

When Nellie hangs from a pair of ropes at an angle, the tension in the ropes c. depends on the angle of the ropes to the vertical. The angle at which the ropes are hanging affects the amount of tension that is required to keep Nellie suspended in the air.

The tension in the ropes will increase as the angle of the ropes to the vertical decreases. This is because the angle of the ropes affects the horizontal and vertical components of the force acting on Nellie. When the ropes are at a steep angle, there is more of a vertical force acting on Nellie, which means that the tension in the ropes will need to be greater in order to keep her suspended.
The tension in the ropes will always be equal to Nellie's weight when the ropes are at a 90-degree angle to the vertical. However, as the angle decreases, the tension in the ropes will increase. Therefore, the tension in the ropes will never be equal to half her weight or twice her weight, but rather it will depend on the angle of the ropes to the vertical.
In conclusion, the tension in the ropes that Nellie hangs from at an angle depends on the angle of the ropes to the vertical. The greater the angle, the greater the tension needed to keep her suspended.

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(a) The velocity of the object at time t is given by finding the derivative of y (t):

y(t) = -2t2 + t + 10dy(t)/dt

= -4t + 1

Therefore, the velocity of the object at time t is -4t + 1.

(b) The acceleration of the object at time t is given by finding the derivative of the velocity function:

dy(t)/dt = -4t + 1d2y(t)/dt2

= -4

Therefore, the acceleration of the object at time t is -4 m/s2.

(c) The ball hits the ground when y(t) = 0, so we can solve for t by setting -2t2 + t + 10 = 0 and using the quadratic formula:

t = (-b ±  (b2 - 4ac)) / (2a), where a = -2, b = 1, and c = 10.

Plugging these values into the formula, we get:

t = (-1 ±  (12 - 4(-2)(10))) / (2(-2)) = (1 ±  81) / 4

We take the negative root because the positive root corresponds to the ball reaching its maximum height before falling back down. Thus,

t = (1 - 81) / 4

= -2/4

= -0.5 s

To find the velocity of the ball at this time, we plug t = -0.5 into the velocity function we found in part

(a):v = -4t + 1

= -4(-0.5) + 1

= 3 m/s

Therefore, the velocity of the ball at the time it hits the ground is 3 m/s.

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Answer:

Endothermic reaction

Explanation:

Answer:

A. Synthesis

B. Exothermic

C. Endothermic

D. Combustion

Explanation:

The weight of the person(s) using the ladder, as well as the weight of any tools or materials being carried up the ladder.

When using a ladder, it is important to calculate the total weight it needs to support to ensure safety and stability. In addition to the weight of the person(s) using the ladder, the weight of any tools or materials being carried up the ladder must also be taken into account.

Neglecting to consider these factors can lead to a ladder being overloaded, which can cause it to become unstable and increase the risk of falls or other accidents.

It is also important to choose the right type of ladder for the job, as different ladders have different weight capacities and maximum load ratings. When in doubt, it is always better to err on the side of caution and choose a ladder with a higher weight capacity than you think you will need.

By taking the time to properly calculate the total weight a ladder needs to support, you can ensure that you are using it safely and reduce the risk of accidents or injuries.

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The fraction of the person submerged when floating gently on the freshwater is 0.973.

The average density of the human body is given to be 973 kg/m³.

According to the Archimedes' principle, when a body floats in a fluid it experience is an upward force on it which is called buoyancy the buoyancy on an object is equal to the weight of the fluid that is displaced by the body.

The buoyancy in general has to be equal to the weight of the body itself in order to float.

So, we can write,

B = Vpg

V is the volume of the body, p is the density od the body.

B = V'xg

V' is the portion of the body submerged in fresh water, x is the density of the fresh water.

Density of fresh water is 1000kg/m³.

Putting values,

Vp = V'x

p/x = V'/V

V'/V = 973/1000

So, the fraction of the human body submerged in freshwater is 0.973.

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The atomic polarizability of such an atom is 1.11 x 10⁻⁴⁰ Cm²/V.

The electric field of the electron cloud can be found by taking the gradient of the charge density function:

E(r) = -∇p(r) = 8.44q/a³ * r

For getting the atomic polarizability, we need to calculate the change in dipole moment induced in the atom when it is placed in an external electric field. This change in dipole moment is proportional to the electric field and the polarizability of the atom.

Δp = αE

Where

Δp = change in dipole moment,

E = external electric field, and

α = atomic polarizability.

We can approximate the electric field as being uniform over the size of the atom, so we can calculate the electric field at the center of the atom:

E = 8.44q/a³ * a/2 ⇒ 4.22q/a²

The change in dipole moment is given by the change in the electron cloud distribution induced by the external electric field. We can approximate this change as being proportional to the square of the electric field:

Δp = βE²

where β is a proportionality constant.

We can now equate the two expressions for Δp and solve for α:

Δp = βE²

βE² = αE

α = βE

Substituting in the expressions for E and Δp, we get:

α = β(4.22q/a²)²

We can now solve for β by using the known value of the polarizability of a hydrogen atom:

α = 4πε0a³

Substituting this into the previous equation and solving for β, we get:

β = α / (4.22q/a²)²

Substituting the given values and solving for β, we get:

β = (4πε0a³) / (4.22² * q²)

Numerically, this gives:

β = 2.63 x 10⁻⁴¹ Cm²/V²

Therefore, the atomic polarizability of a hydrogen atom in the ground state is:

α = βE = 1.11 x 10⁻⁴⁰ Cm²/V

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Atmospheric and oceanic circulation play a crucial role in determining air and ocean water quality at various locations around the globe.

The movement of air and water across the Earth's surface helps to distribute heat, moisture, and pollutants from one region to another. This means that even if you live far away from an area affected by poor air or water quality, you may still be impacted by these conditions.

For example, atmospheric circulation can transport pollutants such as carbon dioxide and ozone from one region to another, affecting global climate patterns and air quality. Additionally, oceanic circulation can transport pollutants and contaminants such as oil spills, plastic waste, and agricultural runoff to distant shores, where they can accumulate and harm marine ecosystems and human health.

Moreover, the effects of climate change, which are influenced by atmospheric and oceanic circulation, are also a major concern for everyone on the planet. Rising temperatures, changing precipitation patterns, and increased frequency of extreme weather events can all have significant impacts on air and water quality, as well as on human health and wellbeing.

In summary, atmospheric and oceanic circulation play a critical role in determining air and water quality around the globe, and their impacts can be far-reaching and long-lasting. It is therefore important for us to understand these complex systems and work towards mitigating their negative effects on our planet and its inhabitants.

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Astronomers now know that surrounding the main body of our galaxy (which our various kinds of telescopes have shown to us) and our fainter halo of stars there is: a spherical halo of dust and gas.

There are many stars, grains of dust, and gas in the Milky Way. It is known as a spiral galaxy because, from the top or bottom, it would appear to be whirling like a pinwheel. About 25,000 light-years from the galaxy's nucleus, the Sun is situated on one of the spiral arms. The Milky Way's center would take you about 25,000 years to reach, even if you could move at the speed of light (300,000 km/s, or 186,000 mph).

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Answer:

Two tectonic plates move horizontally past one another along Earth’s surface, forming long fault lines.

Answer:

Plates move apart

Explanation:

At a transform boundary, plates move apart. At a divergent boundary, plates separate. Convection currents in the mantle contribute to tectonic plate movement.

Given the graph of period vs amplitude.

It can be seen from the graph that the plot of the period versus amplitude is almost a horizontal line. That is, as the amplitude increase, the period of the pendulum remains almost unchanged.

This is also consistent with the fact that the period of the simple pendulum indeed does not depend upon its amplitude.

Thus, according to the graph, the period does not depend on the amplitude.

Answer:

Your answer would be: 130 or 132 km/h (East)

Explanation:

Both vectors are east, so they are added together; however, they must both be in identical units.

Answer:

hope you like

Explanation:

A unit of time is any particular time interval, used as a standard way of measuring or expressing duration.Its SI unit is second

A unit of length refers to any arbitrarily chosen and accepted reference standard for measurement of length. Its SI unit is meter

According to the given statement 2.5 m/s is the final velocity of the truck.

Velocity is the pace and path of an item's movement, whereas speed is really the time rate that a object is travelling along a route. In other words, velocity is a vector, whereas speed is a scalar number. as the pace of a car driving south on a highway or the pace at which a rocket takes off.

Collision energy equals collision energy before collision

Afterward, we would have;

(400 * 20) + (50 * 2) = (50 * 142) + (400 * v)

8000 + 100 = 7100 + 400v

8100 - 7100 = 400v

v = 1000/400

v = 2.5 m/s

According to our estimation, the velocity is 2.5 m/s.

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According to the given statement 2.5 m/s is the final velocity of the truck.

Velocity is the pace and path of an item's movement, whereas speed is really the time rate that a object is travelling along a route. In other words, velocity is a vector, whereas speed is a scalar number. as the pace of a car driving south on a highway or the pace at which a rocket takes off.

Collision energy equals collision energy before collision

Afterward, we would have;

(400 * 20) + (50 * 2) = (50 * 142) + (400 * v)

8000 + 100 = 7100 + 400v

8100 - 7100 = 400v

v = 1000/400

v = 2.5 m/s

According to our estimation, the velocity is 2.5 m/s.

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Answer:

Energy is absorbed by the atom

Answer:

equal to 1

Explanation:

When any ray of light falls or strikes on a surface, the ray is reflected back and the angle of reflection is equal to angle of the incidence, where both the angles are always measured from the path of light that is normal to surface of the point at which the ray of light strikes the surface. This is called as the laws of reflection of light.

And therefore, the ratio of the angle of incidence to the angle of reflection is always equal to 1.

Because Friction between gas orbiting at different speeds transfers angular momentum, also generating heat.

Friction is nothing but the opposing force acting on the device. In this case when accretion disks moves, it transfers angular momentum and and due to friction it also generates heat.

And as we know from conservations of energy that whatever heat is generated and angular momentum gets transferred, both will act as a negative parameter for a accretion disks.

That is the reason it is vey important to know and take care of the friction during designing or using of accretion disks.

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AC Adapters the four-letter type of adapter that’s used with electrical devices that require power but do not contain internal components to derive the required voltage and power from mains power.

Mobile phones, laptop computers, and external hard drives are just a few of the everyday electronic gadgets that can be powered or recharged using alternating current (AC) adapters. An AC adapter converts AC power from an outlet into the voltage or kind of power that is required by an electronic device.

An AC adapter is an external power source that transforms the direct current (DC) required by an electronic device from the alternating current (AC) found in a wall outlet. It is an AC/DC converter as a result. It's also accurate to call it a charger when it powers a battery-operated item.

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Answer: its low

Explanation:

If the resistance of a circuit remains constant while the voltage across the circuit decreases to half its original value, the current in the circuit will also decrease to half its original value.

According to Ohm's law, the current (I) in a circuit is directly proportional to the voltage (V) and inversely proportional to the resistance (R). Mathematically, Ohm's law can be expressed as:

I = V/R

If the resistance of a circuit remains constant while the voltage across the circuit decreases to half its original value, the current in the circuit will also decrease to half its original value.

This is because the voltage is directly proportional to the current, and if the voltage is halved, the current must also be halved in order to maintain a constant resistance.

Using Ohm's law, we can see that if the voltage is halved, the current will also be halved, assuming the resistance remains constant:

I₂ = V₂/R = (1/2)V1/R = (1/2)(I1)

where I₂ is the new current, V₂ is the new voltage, V₁ is the original voltage, and I₁ is the original current.

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Answer:

A quality of matter that is unrelated to a change in its chemical makeup is called a physical property.

Examples of physical properties of matter:

Physical properties are any qualities of matter that may be felt or seen without changing the sample's chemical composition.

Due to the wide range of features that make up physical attributes, they are further separated into intensive and extensive as well as isotropic and anisotropic categories.

Any characteristic that can be recognized and measured by sight, hearing, touch, smell, or other senses without evoking a chemical reaction is referred to as a physical property. Examples of physical traits are:

Color, Shape, Volume, Density, Calorific value, Boiling point, Viscosity, Pressure, Solubility, electrical current

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When a bar magnet is oriented perpendicular to a uniform magnetic field, two important phenomena occur: the force and the torque on the magnet.

Force: The magnetic field exerts a force on the magnet due to the interaction between the magnetic field and the magnetic dipole moment of the magnet. In this case, the force will be perpendicular to both the magnetic field and the magnet. The force will tend to align the magnet with the magnetic field. If the magnet is free to move, it will experience a translational force that may cause it to move in the direction of the force.

Torque: The magnetic field also exerts a torque on the magnet, trying to rotate it. The torque is greatest when the magnet is perpendicular to the magnetic field lines. The torque will try to align the magnet with the magnetic field. If the magnet is free to rotate, it will experience a rotational force that may cause it to align itself with the magnetic field.

The exact magnitude and direction of the force and torque will depend on the strength of the magnetic field, the orientation of the magnet, and the magnetic properties of the magnet.

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