Which of the following is true? *
Electronics and neutrons have the same mass.
Protons and electrons have the same mass.
All subatomic particles have the same mass.
Protons and neutrons have the same mass.

Answer:

Photosynthesis converts solar energy into chemical energy.

your answer is solar energy

hope it helps

Answer:

0.6 ☻︎☻︎☻︎☻︎☻︎☻︎☻︎☻︎☻︎☻︎☻︎

Answer:

1 m/s²

Explanation:

From the question,

Using

a = (v-u)/t.................... Equation 1

Where a = accelartion of the bicycle, v = Final velocity, u = initial velocity, t = time.

Given: v = 15 m/s, u = 5 m/s, t = 10 s

Substitute these values into equation 1

a = (15-5)/10

a = 10/10

a = 1 m/s²

Hence the acceleration of the bicycle is 1 m/s²

B

Explanation:

I not sure try to solve I am sorry

To calculate the internal energy of an ideal monoatomic gas, we can use the formula:

U = (3/2) * n * R * T,

where U is the internal energy, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

Given:

Number of moles (n) = 1.75 moles,

Temperature (T) = 20.0 °C.

First, we need to convert the temperature from Celsius to Kelvin:

T(K) = T(°C) + 273.15.

T(K) = 20.0 + 273.15 = 293.15 K.

Now we can substitute the values into the formula and calculate the internal energy:

U = (3/2) * 1.75 * (8.314 J/mol·K) * 293.15 K.

U ≈ 1.75 * 3 * 8.314 * 293.15 ≈ 14500 J.

Therefore, the internal energy of 1.75 moles of an ideal monoatomic gas at a temperature of 20.0°C is approximately 14500 J. None of the given options match the calculated value.

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Answer:

nobody knows

Explanation:

Answer: it is located over Ellesmere Island, Canada

Explanation

it is now drifting away from North America and toward Siberia.

Answer:ellesmere island, Canada

The characteristics of image formed is a real, inverted, highly magnified image and at infinity.

The following are the general properties of image formed by a convex lens when the object is placed at focal point of the lens;

Thus, when an object is placed at the focal point of a convex lens, the image formed is a real, inverted, highly magnified image and at infinity.

These properties can be seen in the ray diagram attached to this solution.

To construct the ray diagram, draw a line from the top of the image through the focal point and principal axis.

If you look at the lens diagram carefully, you will notice that;

So the object is placed at the focus of the lens.

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The force acting upon the car is 0.691N. Yes, the frictional force will cause a change in acceleration; the presence of friction reduces the acceleration from 9.8 m/s^2 to 8.3 m/s^2.

Newton's second law of motion states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. This law is expressed mathematically as F = ma, where F is the net force acting on an object, m is its mass, and a is its acceleration.

c. The force acting upon the car can be found using Newton's Second Law. In this case, we know the weight of the car is 3.92N, which is equal to its mass times the acceleration due to gravity (9.8 m/s^2). Therefore, the mass of the car is 3.92N / 9.8 m/s^2 = 0.4 kg.

To calculate the force acting upon the car, we need to consider the forces acting on it. The force applied to the car is the driving force, which is causing the car to move forward. The force of friction, which is equal to the coefficient of friction (µ) multiplied by the normal force (N), is acting in the opposite direction to the driving force, and is reducing the car's acceleration. The normal force is equal to the weight of the car, which is 3.92N.

The force of friction is given as 0.5N, and the coefficient of friction is not given. We can use the equation of motion to calculate the force acting upon the car:

F = ma + µN

F = (0.4 kg)(0.5 m/s^2) + µ(3.92N)

F = 0.2N + µ(3.92N)

To find µ, we can use the fact that the car is just about to move, so the force of friction is equal to the maximum static friction force, which is µsN. Therefore, µsN = 0.5N, and µs = 0.5N / 3.92N = 0.128.

Substituting this value into the equation for force, we get:

F = 0.2N + (0.128)(3.92N) = 0.691N

Therefore, the force acting upon the car is 0.691N.

d. Yes, the frictional force will cause a change in acceleration. This can be calculated mathematically by subtracting the force of friction from the driving force and dividing by the mass of the car:

a = (F - µN) / m

a = (3.92N - 0.5N) / 0.4 kg

a = 8.3 m/s^2

If the car were on a frictionless surface, the acceleration would be equal to the driving force divided by the mass of the car, which would be:

a = F / m

a = 3.92N / 0.4 kg

a = 9.8 m/s^2

Therefore, the presence of friction reduces the acceleration from 9.8 m/s^2 to 8.3 m/s^2.

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The Berlin Airlift is best described as the aircraft used to delivered needed food and supplies to the city of Berlin through the air because all other routes were blocked by the Soviet Union.

The Berlin airlift was a 1940s military operation that supplied West Berlin with food and other vital goods by air after the Soviet Union blockaded the city.

Thus, the Berlin Airlift is best described as the aircraft used to delivered needed food and supplies to the city of Berlin through the air because all other routes were blocked by the Soviet Union.

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Magnetic field is stronger at the poles whereas weaker at the center.

The magnetic field on the bar magnet is strongest at the poles because the field lines are most concentrated at the poles while on the other hand, the magnetic field is weaker in the central part of magnet.

Magnetic field has equal amount of strength at both the poles so in my opinion as well as scientific point of view, magnet field is stronger at the poles and weaker at the center of magnet.

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Answer:

I think its -275

Explanation:

Answer:

Analytical

Explanation:

Answer:

B

Explanation:

B BBB

Answer: I think the answer is B if im not wrong

Explanation:

Answer:

v = (-4.44 i^ + 6.66 j^ )  m/s, a_average =( 0 i^ -2π j^) m/s²

Explanation:

The expression left corresponds to an oscillatory movement (MAS), the speed is defined by

         v = dr / dt

the function of position

         r = 2 cos πt  i^  + 3 sin πt  j^

let us note that it is a movement in two dimensions

let's perform the derivative

          v = -2π sin πt  i^  + 3π cos πt  j^

we evaluate this expression for t = 0.25 s, remember that the angle is in radians

          v = -2π sin (π 0.25) i^ + 3π cos (π 0.25) j^

           v = (-4.44 i^ + 6.66 j^ )  m/s

To calculate the mean acceleration we use the expression

           a = (\(v_{f} - v_{o}\)) / Δt

indicates that the time is the first 3 s

we look for the initial velocity t = 0 s

           v₀ = 0 i ^ + 3π j ^

we look for the fine velocity, t = 3 s

          v_f = - 2π sin (π 3) + 3π cos (π 3) j ^

          v_f = 0 i ^ - 3π j ^

we calculate the average acceleration

            Δt = (3 -0) = 3 s

           a_average = (0-0) / 3 i ^ + (-3π - 3π) / 3

           a_average = (0 i ^ -2π j ^ ) m/s²

If a force has a constant magnitude, we can calculate the size of the impulse by dividing the force's strength by the length of time it is applied.

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Answer:

0.4

Explanation:

time is disance divided by speed.

Answer:

If the fan speed increases, then the acceleration increases because a greater fan speed supplies more energy to move the cart.

Explanation:

Answer:

B

Explanation:

Gravitational Energy is the energy of position or place. A rock resting at the top of a hill contains gravitational Potential energy. Hydropower, such as water in a reservoir behind a dam, is an example of gravitational potential energy.

To bring an electron from infinity to the point where the electric potential is zero, an external force must work against the electric field created by the two-point charges q1 and q2. The work done by the external force is equal to the change in the electric potential energy of the electron. In summary, no external work is required.

The electric potential at infinity is defined as zero, so the initial electric potential energy of the electron is also zero. As the electron moves closer to the point where the electric potential is zero, the electric potential energy increases. At the point where the net electric field is zero, the electric potential energy of the electron is maximum.

Therefore, the work done by the external force is equal to the maximum electric potential energy of the electron at the point where the net electric field is zero. This work can be calculated using the equation:

Work = (electron charge) x (maximum electric potential)

Since the charge of an electron is -1.6 x 10^-19 C, and the maximum electric potential is equal to the electric potential at point P, which is zero, the work done by the external force to bring the electron from infinity to point P is zero.

In summary, no external work is required to bring an electron from infinity to the point at which the electric potential is zero, as the maximum electric potential energy of the electron at point P is zero.

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Answer:

true

Explanation:

if all forces are equal then there would be no stronger force to give any net force so it would be zero

Answer:

I'm soooooooo happy you asked the answer is yes

Answer:

1350 meters

Explanation:

this is easy

15 meters per second

90 seconds

90 * 15 = 1350

A train has an initial velocity of 44meter per second and an acceleration of 4meter per second.The final velocity after 10 seconds is 84m/s.

As we know,

Acceleration= Final velocity-Initial velocity /time.

where acceleartion = a=4m/s².

Initial velocity= u= 44m/s

let final velocity be v

Time =t = 10seconds.

Therefore, the equation is:

a=v-u/t

Substituting the values in the given equation, we get:

4=v-44/10

Now cross multiplying,

4×10 = v-44

40=v-44

40+44=v

v=84m/s

Therefore, the final velocity after 10 seconds is 84m/s.

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If the bolt on your car engine needs to be tightened to a torque of τ, you can use a long wrench to produce the required torque.

A torque is a measure of the twisting force applied to an object. It's typically represented by the symbol τ, and it's measured in units of Newton meters (Nm) in the metric system. If a bolt on the car engine needs to be tightened to a torque of τ, you'll need to apply a specific amount of force to ensure that it's properly tightened. A long wrench can be used to increase the torque produced by the force applied to the bolt.
The force applied at the end of the wrench will be amplified at the bolt due to the distance between the end of the wrench and the bolt. To calculate the force you should apply to the end of the wrench, you can use the equation τ = Fd, where τ is the torque you need to produce, F is the force you need to apply at the end of the wrench, and d is the distance between the bolt and the end of the wrench.
To determine the force needed to produce a given torque, you can rearrange the equation to get F = τ/d. So, the force you should apply will depend on the distance between the bolt and the end of the wrench. The longer the wrench, the less force you'll need to apply to produce the required torque. However, you may also need to consider the maximum torque that can be produced by the wrench itself.
A wrench with a higher torque capacity will allow you to tighten the bolt more securely without breaking the wrench. You can use the equation F = τ/d to calculate the force needed to produce a given torque. It's essential to use a wrench with sufficient torque capacity to avoid breaking the wrench or damaging the bolt.

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1. Increase alpha.

2. Conduct a one-tailed test.

3. Increase the effect size.

4. Decrease random error.

5. Increase sample size.

See below~

Explanation:

Given, P = 2 kVA = 2 kW,

t = 90 min = 1.5 h

(a) (i) Electrical Energy Consumed = power * time

= 2 kW x 1.5 h

= 3 kWh ( or 3 commercial unit)

(ii) Since 1 kW = 3.6 x 10^6 J

therefore,

Electrical energy consumed = 3 x 3.6 x 10^6 J

= 1.08 x 10^7 J

(b) Cost of electricity

= energy consumed in kWh x cost per kWh

= 3 x Rs 4.50 = Rs. 13.50

Answer:

Micro Waves

Explanation:

Microwaves in particular are used by cell phone calls for wireless communication. A portion of radio waves with higher frequency makes up these microwaves. The cellphone's antenna transforms speech data into microwaves during a call, and these microwaves travel through the atmosphere to the closest cell tower. The tower takes in and sends the microwaves to the mobile device of the intended receiver. The gadget receives the microwaves and transforms them back into electrical signals so the recipient can hear the voice data. By employing the strength of microwaves, this technology provides wireless communication and permits mobile users to communicate from anywhere inside the cellular network's service area.

The type of waves that are used to make and receive cellphone calls are radio waves.

Radio waves are a type of electromagnetic radiation that has a long wavelength and low frequency. These waves are used for communication purposes because they are able to travel long distances without losing their signal strength. When a person makes a call on their cellphone, their voice is converted into an electrical signal that is sent through the cellphone's antenna as a radio wave. This radio wave is then picked up by the nearest cell tower, which receives the signal and sends it through the network to the person on the other end of the call. The process is reversed when the other person responds, with their voice being converted into a radio wave that is sent back through the network to the caller's phone.

In summary, radio waves are the type of waves that are used to make and receive cellphone calls due to their ability to travel long distances without losing signal strength.

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