Which graph shows the correct relationship between kinetic energy and speed?

Answer:

Electrostatic force is directly proportional to the amount of charge on each body under consideration.

Electrostatic force increases with increase in charge.

Electrostatic force decreases with decrease in charge.

Explanation:

Electrostatic force is the force between 2 charges which can be explained by the Coulomb's Law:

F= K (q₁)(q₂)/r²

Where

F= Electrostatic Force

K = Constant of Proportionality

(q₁) and (q₂) = Amount of charge on each body

r = Distance between two bodies carrying charge

If the value of (q₁) or (q₂) is increased considering the other factors remain constant, the value of F will also increase.

And vice versa.

Answer:

The description of the given scenario is described in the explanation segment below.

Explanation:

The energy transferred could be determined by using the following equation or formula:

   ⇒  Energy transferred = charge × potential difference

The equation that links energy transferred, charge flow, and  potential difference (voltage) is: [tex]E = qV[/tex]

In Science, when a potential difference (voltage) is applied on an object, it gains some potential energy, which is then converted to kinetic energy.

The kinetic energy possessed by the object is responsible for the movement of electrons from one point to another in an electric field.

Hence, the quantity of energy in an electric circuit is directly proportional to the charge and potential difference (voltage) applied on the object.

Mathematically, the energy transferred in an electric field is given by the formula:

[tex]E = qV[/tex]

Where:

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Answer: the answer is C its in the book

Explanation:

Answer:

For 6 its D

For 7 its A

For 8 its C

For 9 I think its B but Im not sure

Answer:

Heat is always the transfer of energy from an object at a higher temperature to an object at a lower temperature.

Explanation:

Answer:

Heat flows from high temperature to low temperature

Explanation:

the answer also may vary it can also be the heat flows from a warmer to colder place

hope this helped!

Answer:

Wavelength, [tex]\lambda=3.64\times 10^{-10}\ m[/tex]

Explanation:

We have,

Velocity an electron is [tex]2\times 10^6\ m/s[/tex]

Mass of an electron is [tex]9.1\times 10^{-31}\ kg[/tex]

It is required to find the wavelength of electron. The De-Broglie wavelength of an electron is given by :

[tex]\lambda=\dfrac{h}{mv}[/tex]

h is Planck's constant

[tex]\lambda=\dfrac{6.63\times 10^{-34}}{9.1\times 10^{-31}\times 2\times 10^6}\\\\\lambda=3.64\times 10^{-10}\ m[/tex]

So, the wavelength of an electron is [tex]3.64\times 10^{-10}\ m[/tex].

Answer:

I think it's D. open series circuit .

Explanation:

hope it helps you!

Answer: A.) December

Explanation:

December has the highest number of days in the options given above, with 31 days compared to the others with 30 days within a calendar month. The billing cycle is used to refer to a time interval between the end and the next billing or statement date. In the scenario above, the billing cycle length is monthly, meaning the periodic interest will be paid over a 31 day span time before thre beginning of another cycle.

For example, if periodic interest is $1 per day, this amount totals ($1 × 31) in december compared to the ($1 × 30) Interest in the June, April and September billing cycle.

Answer:

7.00 m

Explanation:

Given:

v₀ = 2.00 m/s

v = 5.00 m/s

a = 1.50 m/s²

Find: Δx

v² = v₀² + 2aΔx

(5.00 m/s)² = (2.00 m/s)² + 2(1.50 m/s²)Δx

Δx = 7.00 m

Answer: star A is more luminous

Explanation:

Answer:

B. Star A is more luminous than star B.

Explanation:

on edg

Answer:

It is B or D, but I may be leaning a little more towards D.

Explanation:

Answer: 1.81m

Explanation:

Given the following:

Horizontal speed = 4m/s

Height of table = 1m

Taking the vertical component of the motion:

Using:

S = ut + 0.5 at^2

Where, S = height of table, a = acceleration due to gravity (9.8m/s^2), t = time and u = Initial Velocity in vertical direction = 0

1 = 0(t) + 0.5(9.8)t^2

1 = 4.9t^2

t^2 = 1 / 4.9

t^2 = 0.204081

t = sqrt(0.204081)

t = 0.452s

For Horizontal :

Gravitational acceleration is absent, therefore distance can be calculated using:

Distance = Velocity × time

Distance = 4m/s × 0.452s

Distance = 1.808 m

Distance = 1.81m

Answer:

b) gains electrons

Explanation:

When transferring electric charge, an object becomes negative when it gains electrons

Answer:

The widely accepted theory for the origin and evolution of the universe is the Big Bang model, which states that the universe began as an incredibly hot, dense point roughly 13.7 billion years ago.

Answer:

The ball will land 12.5m before that hole.

Explanation:

The motion of the golf ball can be considered as a projectile motion, where first its height is 0, then it keeps increasing to a maximum point, after which its height starts decreasing again and hits the ground (height becomes 0 again).

We need to calculate the Range (horizontal distance) of the ball which is given as:

[tex]R=\frac{v_i^2{\cdot}sin2\theta}{g}[/tex]

Where

v(i) = initial velocity = 35 m/s

θ = Initial angle = 35°

g = gravitational acceleration = 9.8 m/s

Substitute in the given formula to find Range:

[tex]R=\frac{(35)^2\cdot{sin}(2)(35)}{9.8}\\R=\frac{(1225)(0.94)}{9.8}\\R = 117.5~m[/tex]

Distance between the hole and position where ball lands = 130m - 117.5m = 12.5m

Answer:

If pushing forward speeds it and pushing backward slows it down then force perpendicular to the object will keep it stationary and resist it's motion

Explanation:

Hope my efforts make impact in your life

Answer: 25

Explanation:

Answer:

17.8 km/hr

Explanation:

Average speed = distance / time

The total distance traveled is 60 km + 84 km + 68 km = 212 km.

The total time is 2 hr + 1 hr + 8.9 hr = 11.9 hr.

The average speed is 212 km / 11.9 hr = 17.8 km/hr

Answer: False, I think

Explanation:

Well it depends. Its hard to say without a function of the graph. Given a velocity graph, the first derivative is the acceleration.

Negative slope on a velocity graph means you are going in the negative direction. And over time, your velocity per unit of time is also decreasing. That means we are accelerating in the negative direction

Answer:

The de-Broglie wavelength of the nitrogen molecule is 0.0272 nm

Explanation:

The mass, m, of the nitrogen molecule, N₂ = 14.0076u = 28.0152 × 1.66 × 10⁻²⁷ kg

[tex]v_{rms}[/tex] of N₂ = 523 m/s

The de-Broglie wavelength is given as follows;

[tex]de-Broglie \, wavelength = \dfrac{h}{m\times v_{rms}}[/tex]

Where:

h = Planck's constant = 6.62607004 × 10⁻³⁴ m²·kg/s

Plugging in the values, we have;

[tex]de-Broglie \, wavelength = \dfrac{6.62607004 \times 10^{-34}}{28.0152 \times 1.66 \times 10^{-27}\times 523} = 2.72\times 10^{-11} \, m[/tex]

Hence, the de-Broglie wavelength of the nitrogen molecule = 0.0272 nm.

Explanation:

a toothpick

Explanation:

SUPONIENDO QUE LA ACELERACIÓN DE LA GRAVEDAD ES [tex]9.80 m/s^{2}[/tex]

USANDO LA SEGUNDA LEY DE NEWTON:

m = 80.0 N/[tex]9.80 m/s^{2}[/tex] = 8.16 kg

Answer:

8kg

Explanation:

using the formula Force(F)=mass(m)×acceleration(a),

since we are finding the mass of the object,we will make m the subject by dividing both sides by a.

you will now get m= f/a

the acceleration on Earth is usually 10m/s

m= 80/10

m= 8/1 which is also 8kg

Answer: C

Explanation: I dont realy know what this means. but it will not increase because your not getting closer to earths center of gravity and not decreasing because your not high enough in the atmosphere.

Answer:

Vector Quantities Increase/Decrease in Temperature - The measurement of the medium's temperature is a scalar quantity; the measurement of the increase or decrease in the medium's temperature is a vector quantity. Velocity - The measurement of the rate at which an object changes position is a vector quantity.

Explanation:

Answer: velocity has a magnitude and a direction. This quantity is useful in every day lives in many ways. for example when you are  driving in a car, its good to know the velocity in which the car is going.

Explanation: sorry its late

Answer: The direction of the force of friction is such that it opposes the direction of motion that an object would move if there were no frictional force acting on the object.

The direction of motion and direction of friction have to be  in opposite directions for a object to be in motion.

Motion is defined as a phenomenon which is described with respect to change in object's position with respect to time.It is given in terms of displacement,velocity,distance ,acceleration,speed.

Branch of physics which deals with motion of objects without any reference to it's cause is called kinematics while the branch which studies forces and their effects on motion is called as dynamics.

Motion applies to various systems like objects,bodies, matter particles ,radiation ,curvature.There are three laws of motion which are proposed by Newton.Classical mechanics is based on Newton's law of motion.Relativistic  mechanics is based on modern kinematics.

Learn more about motion,here:

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Answer:

A. The system is the pot and water.

Explanation:

Thermodynamics is an aspect in science which deals with the applications of heat energy. The useful applications of heat energy to perform work.

In the given question, the pot and water is the system which both absorbs heat energy from the stove. Thus, the system is a closed system since it shares heat energy with its surroundings.

The surrounding of the system extends from the boundary of the pot to the universe.

Answer:

It is a change in velocity over a period of time.

Explanation: