3) A body of mass 10 kg is pulled from rest with a constant force of 40 N. The force is applied for 2 sec. calculate (a) The distance travelled (b) Work done on the body (c) The KE of the body (d) The final velocity of the body​

Answer:

unbalanced

750

forward

Explanation:

Basically fill in the blanks

Answer:

  v = -4 m / s

Explanation:

The average speed of a body is defined by the distance traveled in a given time interval

     v = (x₂ -x₁) / (t₂ -t₁)

in this case the end point is x₂ = -10 m and the start point is x₁ = 10 m, the negative sign is because the point is below the reference that can be considered as zero point

let's calculate

     v = (-10 - 10) / 5

     v = -20 / 5

      v = -4 m / s

Answer:

M¹L¹T^-2

Explanation:

M¹L¹T^-2

.....

Answer:

The copper wire (resistance 0.1 Ω )

Explanation:

In a parallel connection, the same voltage is maintained across all the resistors but the current varies.

The larger the magnitude of the resistance, the smaller the current flowing in the circuit and the smaller the heat dissipated by the resistor.

Hence the copper wire dissipates the greatest heat.

Concave mirrors can create both actual and virtual pictures. Mirrors can be enlarged, shrunk, or the exact size as the item. They can just be upright (if online) or reversed (unless real); front of the glass (unless real); or behind the glass (if virtual).

Convex mirrors are not utilized to focus light since they diverge light rays by reflecting light outward. Virtual, upright, and initially smaller than the item, the image grows to a maximum size equal to the thing as it approaches the mirror. Diverging mirrors are another name for such mirrors.

Spherical mirrors include both concave and convex mirrors.

Property 1: The incoming ray that is perpendicular to the main axis travels through the concave mirror's focus.

Property 2: The incident light will be reflected parallel toward the major axis if it passes through the focus.

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The Oceans on Earth offer various demographic features, which make up their workings, and their effect on the Hydrosphere, Lithosphere, and Atmosphere.

The most important properties of the oceans are:

We shall go through all of these briefly.

The Earth's oceans are divided into major ocean basins. The Atlantic, Pacific, Indian, Southern, and Arctic oceans cover all the major water bodies. They vary in size and characteristics based on where they are located.

The coastlines which border these oceans across our countries have a varied disposition in features, like sandy beaches, swamps, mangrove forests, or cliffs. These areas are highly influenced by the ocean's effects.

In some parts of the world, the coastlines contain huge parts of the continent's edges, which are submerged underwater. But these are not as deep as the ocean bed.  These usually provide a chance to mine useful resources.

The large-scale movement of waters we see at beaches is caused by a wide range of influencing factors, mainly the climate. Hence, these currents also have a major hand in the distribution of heat around the planet.

Other than these surface features, Oceans also have depth-based characteristics, depending upon the intensity of light that reaches their depths. The top layers receive a lot of direct sunlight, resulting in a variety of life forms. The twilight zone with minimal light and the deep zone show varied properties due to the absence of light.

Marine biology, a lot more varied than what is present on the surface is diverse, vibrant, and colorful. A lot can be learned about evolution, as well as the resources present under the oceans can be learned about, by studying animal behavior.

Oceans do help in the transfer of heat, but also maintain our rain cycles, and weather patterns. Even small changes to the Ocean's behaviors has significant effects on land organisms, such as El Nino.

The majority of our trade and connectivity is achieved through long ocean routes. A lot of resources, such as fish, oils, and minerals are obtained beneath the deep waters. But at the same time, human activities are being a bane to ocean life and its quality is affected.

Thus, it is necessary we save this source of resources and use them responsibly to maintain the lifelines of our planet.

The question should be:

Give a brief description of the characteristic features of the Oceans on Earth.

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Answer:

10.61 m/s

Explanation:

To find the final speed, we will use the conservation of momentum in each direction, so we can write the following equations:

Where m1 and m2 are the mass of the vehicles, v1 and v2 are their respective velocities in each direction, and Vfx and Vfy are the final velocities in each direction.

If one of the vehicles is headed north, its horizontal velocity Vx = 0 m/s. In the same way if the other is headed east, its vertical velocity Vy = 0m/s

Therefore, we can replace the values and solve the first equation as:

In the same way, we can solve the second equation as:

Now, we know that the vertical and horizontal speed was 7.5 m/s. So, we can calculate the final speed using the Pythagorean theorem as:

So, the speed after the collision was 10.61 m/s

1. Proper Training and Knowledge: The first and most important step in avoiding injury from electrical devices is to receive proper training and knowledge about how to safely operate and handle electrical equipment. It's essential to understand the risks and hazards associated with electrical devices, including the dangers of electric shock and the potential for fire or explosion.

2. Use of Protective Gear and Equipment: Another crucial means of avoiding injury from electrical devices is to use appropriate protective gear and equipment.

This includes wearing rubber gloves and safety glasses when working with electrical equipment, using insulated tools to prevent electric shock, and wearing appropriate clothing to reduce the risk of fire or electrical burns. Additionally, always make sure to use equipment that is properly grounded and to avoid using damaged or frayed electrical cords.

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Answer:

the matter is made into paper

Explanation:

The example that is NOT an example of Simple Harmonic Motion is:

A ball rolling down a hill.

Simple Harmonic Motion is a type of periodic motion where the restoring force is proportional to the displacement from equilibrium and is directed towards the equilibrium point. The classic example of simple harmonic motion is the motion of a mass attached to a spring that is oscillating back and forth. Other examples of simple harmonic motion include a pendulum swinging back and forth and the vibration of a guitar string.

A ball rolling down a hill does not exhibit simple harmonic motion because it does not have a restoring force that is proportional to the displacement from equilibrium. The motion of the ball is affected by the force of gravity, which is not directed towards the equilibrium point, and the frictional force between the ball and the surface of the hill, which is not proportional to the displacement from equilibrium. Therefore, it is not an example of simple harmonic motion.

Answer:

satisfaction, enjoyment and fair play

Answer:

It is important to be a good sport, and even if you do not win still be happy about being able to participate, and congratulate the person that did win.

Explanation:

Hope this helped Bye!

Answer:

A

Explanation:

Answer:

Distance divided by time

Explanation:

To calculate the net torque required, you can use the formula:

Net torque = I * α

Where I am the moment of inertia of the solid ball and α is the angular acceleration.

For a solid ball, the moment of inertia (I) is given by:

I = (2/5) * m * r^2
where m is the mass and r is the radius of the ball.

Now, plug in the given values:

I = (2/5) * 20 kg * (0.20 m)^2
I = 0.32 kg m^2
Next, multiply the moment of inertia (I) by the angular acceleration (α):

Net torque = 0.32 kg m^2 * 20 rad/s^2
Net torque = 6.4 N m

What is torque?

Torque is a measure of a force's ability to rotate an object around an axis or pivot point. When the force is perpendicular to the object's axis of rotation, it is most effective. Torque is a measure of an object's "rotational motion. "Torque is expressed in newton-meters (N-m) or pound-feet (lb-ft) in the metric system (ft-lb). In simple terms, torque is the product of force and the distance from the point of rotation to the point where the force is being applied. Formula to calculate net torque is equal to the product of the force and the lever arm, which is the distance between the pivot point and the point at which the force is applied. The net torque can be calculated using the following formula: Net Torque = Lever arm x Applied force Where Net torque is the resultant torque acting on an object. The lever arm is the distance from the pivot point to the force being applied. The applied force is the force applied. It can be any type of force, such as gravitational force, frictional force, or electrical force.
So, the net torque required is 6.4 N m.

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When the earth passes through orbit that has the trail of dust and gas after the comet passes through the orbit, the are chnaces of meteor shower.

Here, in the given image, the comet path is intersecting the earth's orbit.

Thus, the chances of meteor shower are very large if there is the comet whose trail of dust or gas has just passes through the nearby the earth orbit.

Answer:

The thrown football has Potential or stored Energy, PE, by virtue of its position in the air and the ability for it to fall by itself. The thrown football also has Kinetic Energy, KE, given that the ball is in motion and requires an equal and opposite amount of energy to stop it. Both the PE and the KE  are forms of Mechanical Energy, ME and the Mechanical Energy of the football is equal to the sum of its Potential and Kinetic Energy. That is ME = PE + KE

Explanation:

Potential energy, PE, is the energy that is the held or stored energy of a body such that the body is able to do work without the addition of energy from an external source

A thrown football that has an elevation or height above the floor level has the capacity to come back down and bounce on the floor without the presence of assistance at the topmost height of the football. Therefore, the thrown football has potential energy, given to it by the thrower

Kinetic Energy, KE, is the energy possessed by a moving that comes from the motion of the object

Given that the thrown football is in motion, it posses kinetic energy

Therefore, the thrown football possesses both potential energy and kinetic energy which are forms of mechanical energy ME

The combined energy of the football is therefore called the Mechanical Energy ME of the ball which is the sum of the potential and kinetic energies of the football, given as follows;

The Mechanical Energy of the football = The Potential Energy of the football + The Kinetic Energy of the football

∴ ME = PE + KE

The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.

Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.

Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:

∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du

The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.

Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.

Let us work through the steps:

Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x

Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du

Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.

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Explanation:

\( \sqrt{13} + \sqrt{13} + \sqrt{} x = 180\)

\(2 \sqrt{13} + \sqrt{} x = 180\)

\( \sqrt{} x = 180 - 2 \sqrt{13} \)

\( \sqrt{x} = 172.7888974\)

\( \sqrt{ {x}^{2} } = \sqrt{172.7888974} \)

\(x = 13.14491907\)

Answer:

D) The contraction of objects in space

Explanation:

A) Expansion of the universe as originated from the Big Bang is an important evidence, as B) the Cosmic microwave background which is thought to be left over from the Big Bang. The right proportion of hydrogen and helium as unprocessed material that has been detected as the basic elements from where the universe started.

The only out of context option is option D

The intermolecular forces present in water include hydrogen bonding and dipole-dipole interactions.

Water is a polar molecule, meaning it has a positive and a negative end due to an uneven distribution of electron density. This polarity gives rise to intermolecular forces that hold water molecules together.

One of the intermolecular forces present in water is hydrogen bonding. Hydrogen bonding occurs when a hydrogen atom, which is covalently bonded to an electronegative atom (in this case, oxygen), is attracted to another electronegative atom (such as oxygen or nitrogen) in a different molecule. In water, the oxygen atom of one water molecule forms a hydrogen bond with a hydrogen atom of a neighboring water molecule. Hydrogen bonding is a strong intermolecular force and contributes to many of the unique properties of water, such as its high boiling point and surface tension.

In addition to hydrogen bonding, water also exhibits dipole-dipole interactions. Dipole-dipole interactions occur between the positive end of one polar molecule and the negative end of another polar molecule. In water, the positive hydrogen end of one water molecule is attracted to the negative oxygen end of a neighboring water molecule. These dipole-dipole interactions are weaker than hydrogen bonds but still contribute to the overall intermolecular forces present in water.

Other intermolecular forces, such as ion-dipole interactions and London dispersion forces, are not as significant in water compared to hydrogen bonding and dipole-dipole interactions. Ion-dipole interactions occur between an ion and the charged end of a polar molecule, while London dispersion forces arise from temporary fluctuations in electron distribution. While these forces may exist in other substances, they play a relatively minor role in the intermolecular forces of water.

In conclusion, the intermolecular forces present in water are primarily hydrogen bonding and dipole-dipole interactions. These forces contribute to the unique properties and behavior of water as a liquid.

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The total distance that the pulse traveled is 8.94 x 10^-3 meters.

You can use the formula:

d = vt / 2

where d is the total distance that the pulse traveled, v is the speed of sound in the medium, and t is the time it took for the sound wave to travel to the object and back.

The time it took for the sound wave to travel to the object and back is equal to the go-return time, which is 52 microseconds.

Substituting the values we have, we get:

d = (343 m/s x 52 x 10^-6 s) / 2

d = 8.94 x 10^-3 m

Therefore, the total distance that the pulse traveled is 8.94 x 10^-3 meters.

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Answer:

If there isn't this type of mechanism, the whole setup will blow even if only one lamp burns out. Doing this mechanism is to decrease the overall resistance resulting in an increased current (Since resistance and current are inversely related) which is the best to blast the fuse.

Answer:

20 years Light.

Explanation:

There's no practical explanation just math's.

The centripetal force on the satellite in the larger orbit is half as great as that on the satellite in the smaller orbit.

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Answer:

1226.25 N

Explanation:

w = mg = 125 (9.81) = 1226.25 N

Explanation:

A. Something that occupies a volume of space and also has mass

Answer:

Thermal Energy. Thermal energy is the internal energy of an object due to the kinetic energy of its atoms and/or molecules. The atoms and/or molecules of a hotter object have greater kinetic energy than those of a colder one, in the form of vibrational, rotational, or, in the case of a gas, translational motion.

Explanation:

Answer: the last three people ran faster than 5 meters per second

Explanation: moo

Explanation:

Look at your resources around you, find ways to cope with the situation.

Look at your environment or what is there around you that can help you.

Is there anyone that can help you.

Think more.

Try thinking outside of the box

Don't be logical

I wasn't sure if you meant this mentally or physically.