A 2.1W ipod is used for 30 minutes. How much energy does it store

Answer:

The fibers of the sweater lose electrons.

Answer:

they are like charges so they magnitude repulsive & direction will be ones left &ones right. but it depends on the axis of rotation.

You are given two particles, each with a positive charge, and a box that is 1 m by 1 m. To arrange the particles to create the weakest electric force between them i put at opposite direction diagonally.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

According to Coulomb's law, the force of attraction or repulsion between two charged bodies is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

To arrange the particles to create the weakest electric force between them i put at opposite direction diagonally.

To learn more about force refer to the link:

brainly.com/question/13191643

#SPJ2

Answer:When charged particles from the sun strike atoms in Earth's atmosphere, they cause electrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This process creates the beautiful aurora, or northern lights.

Explanation:

A thick magnetic disk made of aluminum platters and It uses read/write heads to access data stored on the platters, that is correct statement.

Hard disk drives are thick magnetic disks made of aluminum platters, They use read/write heads to access data stored on the platters. They have up to several TB in storage capacity and their cost per MB is cheap. Solid state drive is a flash device with storage capacity similar to a small hard drive.

For operation point of view, Hard disk drives are bit slower than solid state drive are faster. so using a solid state drives devices are booted up fast. In case of price point of view, SSD devices are more costly than HDD.

To know more about magnetic disk, visit here

https://brainly.com/question/27844921

#SPJ4

Answer:

7.2V

Explanation:

Find the equivalent resistance:

Req = 10 ohms + 15 ohms = 25 ohms

Use ohm's law to find the current:

V = IR

12V = I(25 ohms)

I = .48 amps

Multiple the current with the value of R2 to get the voltage drop:

.48amps x 15 ohms = 7.2V

Answer: C. Radio wave

Explanation:

The order of energy of electromagnetic waves from least to greatest is

Radio waves, microwaves, infrared, red, ultraviolet, x ray and gamma waves. Thus, the type of electromagnetic wave has less energy than a microwave is

C. Radio wave

Answer: Circuit breakers and fuses have different parallel circuits

Explanation: That means that if one circuit gets overloaded (tripping the circuit breaker or blowing the fuse), it won't have any effect on the other circuits.

Answer:heheh it does, number 54

Explanation:

because number 36 Im WOULDNT be right

The mantissa distance, which is referred to as the decimal portion of a logarithm, has a value of 0.030 in this number.

A common logarithm's integral portion is known as the characteristic, and its non-negative decimal portion is known as the mantissa. If log 39.2 equals 1.5933, then 1 is the characteristic and 5933 is the logarithm's mantissa.

The base-10 logarithm's mantissa, which represents the digits of the provided integer but not its magnitude, is a common logarithm's fractional component. For instance, both ㏒10201.3010 and                    ㏒102002.3010 have a mantissa of 0.3010.

To know more about distance visit:-

https://brainly.com/question/11567236

#SPJ1

Answer:

To change degrees Celsius in degrees Fahrenheit, the formula is:

F = 1.8C +32F=1.8C+32

So,C = 1.8C +32C=1.8C+32

C = -40C=−40

T=-40+273.15=233.15\ KT=−40+273.15=233.15 K

0.09/^oC

Answer:

To find the initial speed of the frog, we can use the equation for the maximum height reached in projectile motion:

Maximum height = (initial velocity^2 * sin^2(theta))/2g

Where:

- `initial velocity` is the speed at which the frog jumped

- `theta` is the angle at which the frog jumped (assuming it's a simple vertical jump, `theta` would be 90 degrees)

- `g` is the acceleration due to gravity (9.8 m/s^2)

Plugging in the known values, we get:

1 = (initial velocity^2 * sin^2(90))/2(9.8)

Simplifying and solving for `initial velocity`, we get:

initial velocity = √(2gh) = √(2 * 9.8 * 1) = 4.43 m/s

Therefore, the frog's initial speed was 4.43 m/s.

Explanation:What is centripetal acceleration?

Can an object accelerate if it's moving with constant speed? Yup! Many people find this counter-intuitive at first because they forget that changes in the direction of motion of an object—even if the object is maintaining a constant speed—still count as acceleration.

Acceleration is a change in velocity, either in its magnitude—i.e., speed—or in its direction, or both. In uniform circular motion, the direction of the velocity changes constantly, so there is always an associated acceleration, even though the speed might be constant. You experience this acceleration yourself when you turn a corner in your car—if you hold the wheel steady during a turn and move at constant speed, you are in uniform circular motion. What you notice is a sideways acceleration because you and the car are changing direction. The sharper the curve and the greater your speed, the more noticeable this acceleration will become. In this section we'll examine the direction and magnitude of that acceleration.

The figure below shows an object moving in a circular path at constant speed. The direction of the instantaneous velocity is shown at two points along the path. Acceleration is in the direction of the change in velocity, which points directly toward the center of rotation—the center of the circular path. This direction is shown with the vector diagram in the figure. We call the acceleration of an object moving in uniform circular motion—resulting from a net external force—the centripetal acceleration

a

c

a

c

​

a, start subscript, c, end subscript; centripetal means “toward the center” or “center seeking”.

Answer:

charge to uspe bro +positive hi rhega

For the same reason that you can skate around a curve at constant speed but not with constant velocity.

The DIRECTION you're going is part of your velocity, but it's not part of your speed.

If the DIRECTION changes, that's a change of velocity.

The object doesn't have to change speed to have a different velocity. A change of direction is enough to do it.

And any change of velocity is called acceleration.

A total differential is an equation in which all the differentials can be integrated independently of each other. To verify that the given expressions are total differentials, we must check if they meet the conditions of being an exact differential function.The given expression is not an exact differential function.

According to the exact differential function, an expression dQ should be equal to the sum of two partial derivatives of the same function. i.e, dQ= dP+ dRA primitive function of an expression is obtained by integrating the given expression partially. Let's solve the given expressions, one by one:

1. Expression : (x² + 2xy-y²)dx + (x²-2xy - y²)dy. Now, we need to find the partial derivatives of the above function with respect to x and y.∂P/∂x = x² + 2xy - y²  ∂Q/∂y = x² - 2xy - y².

On verifying, we get:∂P/∂x = ∂Q/∂y.

Hence, the given expression is an exact differential function.

To find the primitive function, we need to integrate any one of the partial derivatives with respect to x and other with respect to y.

∴ P(x,y) = ∫(x² + 2xy - y²)dx = x³/3 + x²y - xy² + C1 and ∴ Q(x,y) = ∫(x² - 2xy - y²)dy = x²y - y³/3 + C2.

Therefore, the primitive function of the expression is: P(x,y) = Q(x,y) = x³/3 + x²y - xy² - y³/3 + C2.

Expression : (2xcosy - y² sinx) dx + (2ycosx - x² siny) dy. Now, we need to find the partial derivatives of the above function with respect to x and y.∂P/∂x = 2cosy  ∂Q/∂y = 2ycosx.

On verifying, we get:∂P/∂x ≠ ∂Q/∂y .

Hence, the given expression is not an exact differential function.

Therefore, there does not exist a primitive function for the given expression.

Learn more about primitive function here ;

https://brainly.com/question/31404756

#SPJ11

A force that resists motion of two surfaces that are touching is known as friction.

when attempting to slide an object across two surfaces, there is resistance. When "rough edges" interact at the molecular level, friction results: Every time there is friction, the direction of motion is reversed.

The force that opposes motion when the surface of one object rubs against the surface of another is known as friction.

opposing forces These comprise: Friction is a force that tries to stop two surfaces from slipping or sliding when they are in contact. The motion is countered by air resistance, which acts.

To know more about friction visit:

https://brainly.com/question/13000653

#SPJ4

The velocity of the rower relative to the shore is the sum of her velocity relative to the water and the velocity of the water relative to the shore:

\(\vec v_{R/S} = \vec v_{R/W} + \vec v_{W/S}\)

Then

\(\vec v_{R/S} = \left(4.5\dfrac{\rm km}{\rm h},0\right) + \left(0,3.5\dfrac{\rm km}{\rm h}\right) = (4.5,3.5)\dfrac{\rm km}{\rm h}\)

The magnitude of this velocity is

√(4.5² + 3.5²) m/s ≈ 5.7 m/s

Answer:

Gravity

Explanation:

Gravity is a force that acts upon every single object on Earth.

The principle of conservation of energy allows to find the result for the mechanical energy of the system is:

Mechanical energy is defined by the sum of the kinetic energy and the potential energies.

            Em = K + U

In the principle of energy conservation, it establishes that energy cannot be created or destroyed, it is only transformed, in the case of no friction, mechanized energy is conserved at all points.

They indicate that the system is rotating, which is why it is subjected to a force that expends its energy in changing the direction of the speed to keep the system in rotation, so the speed of the system remains constant.

          Em = K = ½ I w²

Consequently, using the principle of conservation of energy we can find the result for the mechanical energy of the system is:

Learn more here: brainly.com/question/1517221

Without friction, the car cannot stop...

Given data:

* The mass on the frictionless table is,

* The mass hangs freely from the string is,

* The hanging mass falls a distance is,

Solution:

(1). The normal force of mass on the frictionless table is,

As the displacement of the mass m_1 on the frictionless table is in the hroizontal direction.

Thus, the work done by teh normal force is,

As both the normal force and displacement are perpendicuular to each other.

Thus, the work done by the nromal force on the mass m_1 is,

Thus, the work done by the normal force on m_1 is zero.

Answer:

https://gml.noaa.gov/education/info_activities/pdfs/LA_radiation.pdf

Explanation:

If you float a piece of wood in a container half-full of water that rests on a weighing scale, the weight reading on the scale will increase.

Buoyancy is the force through your fluids or total or submerged bodies. Also known as Archimedes' theorem. The fluid of the direction on the body produces a resultant force but with the direction of the weight, with the opposite direction, upwards.

All material submerged in a liquid under the action of buoyancy, for this reason we have that the value on the scale will be increased with a system of a wood floating in water.

See more about Buoyancy at brainly.com/question/19168433

#SPJ12

On sunny day, sand on beach is hot, but water is still cool even though the same energy has been applied to both. Property of water this demonstrate is : high specific heat.

Water has highest specific heat capacity. Water also feels cool because water has a higher specific heat than sand. Despite the water receiving same amount of energy in the same amount of time as the sand, water needs more energy to change one gram of the water to one degree Celsius.

Amount of heat energy required to increase temperature of a unit of given substance by 1°C is called Specific heat capacity.

To know more about specific heat capacity, refer

https://brainly.com/question/27991746

#SPJ4

Take east to be the positive direction. Then the resultant force from adding F₁ and F₂ is

F₁ + F₂ = (-45 N) + 63 N = 18 N

which is positive, so it's directed east.

To this we add a third force F₃ such that the resultant is 12 N pointing west, making it negative, so that

18 N + F₃ = -12 N

F₃ = -30 N

So F₃ has a magnitude of 30 N and points west.

Answer:

electromagnetic radiation hopefully

Answer:

4 * 10^-8 mg = .4 * 10^-7 mg        divide and multiply by 10

5.0 x 10^-7mg + .4 x 10^-7 mg = 5.4 x 10^-7 mg

Also 5.4 x 10^-7 mg = 5.4E-7 mg

Answer:

Most energy crises have been caused by localized shortages, wars and market manipulation. Some have argued that government actions like tax hikes, nationalisation of energy companies, and regulation of the energy sector, shift supply and demand of energy away from its economic equilibrium.

The answer would be B.) Electric Energy

Answer:

b.electric energy

we need electric energy to make the heater work.

The first law of thermodynamics is a fundamental principle of physics that states that the total energy of the universe is constant.

This means that energy can neither be created nor destroyed; it can only be transferred or transformed from one form to another. In other words, the total amount of energy in the universe remains constant although it may be converted from one form to another.

This law has far-reaching implications for our understanding of the physical universe. It tells us that energy is always conserved, and that any change in the energy of a system must be balanced by an equal and opposite change elsewhere in the universe. This is why the change in energy of the universe is always zero.

The first law of thermodynamics is particularly important in the field of thermodynamics, which is concerned with the study of energy and its transformation in systems. It provides a framework for understanding how energy is transferred and transformed in systems, and is fundamental to our understanding of the natural world.

Overall, the first law of thermodynamics is a powerful principle that underlies much of modern physics and engineering. It tells us that energy is always conserved and that any change in energy must be balanced by a corresponding change elsewhere in the universe.

Know more about first law of thermodynamics here:

https://brainly.com/question/26035962

#SPJ11