Two positive charges are placed near each other what happens between the charges

Answer:

A vacuum would have been created. I hope this helps have a great day

Explanation:

A weather front is a boundary separating air masses of several characteristics eg. Air density, wind and humidity. Disturbed weather often arises from these differences

Answer:

Hey!

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Voltage (V) = 0.8V

Current (I) = 200 mA = 200/10^3 = 2/10

Resistance = ?

Resistance = Voltage / Current

Voltage = Current × Resistance

0.8 = 2/10 × Resistance

0.8×10/2 = Resistance

8/2 = Resistance

Resistance = 4 ohm

_________________

Hope it helps...!!!

Explanation:

Answer:

The main difference between these types of motion is that circular motion is a special case of rotational motion, where the distance between the body’s centre of mass and the axis of rotation remains fixed.

Rotational motion is based around the idea of rotation of a body about its center of mass. In rotational motion, the axis of rotation and centre of mass could change whereas in circular motion, the axis of rotation and centre of mass does not change.

Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path and can either have a constant angular rotation rate and constant speed, or it can exist with a changing rate of rotation.

Think of one of those fairground rides where people sit on dummy horses. Now imagine the horses spin around the post that holds them to the base of the ride. Then you have both rotational motion of the horse and circular motion as the horses move around the ride.

Answer:

light can bounce off the material, which is called reflection. The reflection of a wave is simply a process by which a wave, whether light, sound, infrared, or radio waves, hits an object and bounces off it.

Explanation:

Answer:

It is reflection because the light will instead of passing through will bounce off a material and be reflected to another surface or material

Respuesta:

a) 12.3 m/s²

b) 153.75 m

c) 36.9 m/s

Explicación:

Paso 1: Información provista

Paso 2: Calcular la aceleración (a) del cochecito

Usaremos la segunda ley del movimiento de Newton.

F = m × a

a = F/m = 8 N / 0.650 kg = 12.3 m/s²

Paso 3: Calcular el espacio recorrido (x) en 5 segundos (t).

Usaremos la siguiente fórmula cinemática para un movimiento rectilineo uniformemente acelerado.

x = 1/2 × a × t²

x = 1/2 × 12.3 m/s² × (5s)² = 153.75 m

Paso 4: Calcular la velocidad (v) a los 3 segundos si parte del reposo

Usaremos la siguiente fórmula cinemática para un movimiento rectilineo uniformemente acelerado.

v = a × t

v = 12.3 m/s² × 3 s = 36.9 m/s

Los cálculos dados serían los siguientes:

a). Aceleración = 12,3 m / s ^ 2

B). Distancia recorrida en 5 segundos = 153,75 m

C). Velocidad en 3 segundos = 36,9 m / s

Dado que,

Fuerza aplicada = 8N

Peso de la silla de paseo en gramos = 650g

a). To find the aceleración,

[tex]F = m[/tex] × [tex]a[/tex]

[tex]a = F/m[/tex]

[tex]= 8 N/0.650 kg[/tex]

[tex]= 12.3 m/s^2[/tex]

Now,

b). :-espacio recorrido en 5 segundos y

Using the Kinematic formula:

[tex]x = 1/2[/tex] × [tex]a[/tex] × [tex]t^2[/tex]

[tex]x = 1/2[/tex] × [tex]12.3 m/s^2[/tex] × [tex](5s)^2[/tex]

= 153.75 m

c). Using the same formula,

velocidad a los 3 segundos si parte

[tex]v = a[/tex] × [tex]t[/tex]

[tex]v = 12.3 m/s^2[/tex] × [tex]3 s[/tex]

= 36.9 m/s

Learn more about "Acceleration" here:

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Answer:

205N

Explanation:

The net force (F) is the difference between the applied force([tex]F_{A}[/tex]) and the kinetic frictional force([tex]F_{R}[/tex]). i.e

F = [tex]F_{A}[/tex] - [tex]F_{R}[/tex]    -----------------(i)

Note that;

[tex]F_{R}[/tex] = μmg

Where;

μ = coefficient of kinetic friction

m = mass of the body

g = acceleration due to gravity = 10m/s²

Equation (i) then becomes;

F = [tex]F_{A}[/tex] - μmg        -------------------(ii)

Given from question;

m = mass of motorcycle = 150kg

μ = 0.03

[tex]F_{A}[/tex] = 250N

Substitute these values into equation (ii) as follows;

F = 250 - (0.03 x 150 x 10)

F = 250 - (45)

F = 205N

Therefore, the net force applied to the motorcycle is 205N

Answer:

Explanation:

Quantum mechanics tells us that light can behave simultaneously as a particle or a wave. However, there has never been an experiment able to capture both natures of light at the same time; the closest we have come is seeing either wave or particle, but always at different times.When UV light hits a metal surface, it causes an emission of electrons. Albert Einstein explained this "photoelectric" effect by proposing that light – thought to only be a wave – is also a stream of particles

Why is light considered a wave and a particle?

Light behaves mainly like a wave but it can also be considered to consist of tiny packages of energy called photons. Photons carry a fixed amount of energy but have no mass. They also found that increasing the intensity of light increased the number of electrons ejected, but not their speed

Answer:

Mandaloun won the race.

Explanation:

First, we will calculate the time taken by the Hot Rod Charlie:

[tex]s = vt\\t = \frac{s}{v}[/tex]

where,

t = time taken by Hot Rod Charlie = ?

s = distance covered = 1.25 miles

v = speed of Hot Rod Charlie = 0.79 miles/min

Therefore,

[tex]t = \frac{1.25\ miles}{0.79\ miles/min} \\t = 1.58 min[/tex]

Since Hot Rod Charlie took more time (1.58 min) than the Mandaloun (1.52 min).

Therefore Mandaloun won the race.

Answer:

They first spend it on necessities.

Answer:

The Liver, Pancreas and Gall Bladder are involved in the process of delivering the digestive juices for the Intestines

Explanation:

Answer:

kinetic energy

Explanation:

it is most common

Answer:

the answer is the diagram B

Answer:

a. Increases

b. Two objects that have opposite charges

Explanation:

a. As the amount of charge on two objects increases, the strength of the electrical force between the objects increases. decreases. varies. remains the same.

According to Coulomb's law, the electrical force, F between two charges q and Q is directly proportional to the product of the charges.

So, F ∝ qQ

So, if q and Q increase, their product increases and thus, the strength of the electrical force between them increases.

So, if the amount of charge of two objects increases, the strength of the electrical force between the objects increases.

b. For which pair of objects would adding the same amount of electrons to each object result in a decrease in the electric force? two positively charged objects two negatively charged objects two objects that have no charge two objects that have opposite charges

Since according to Coulomb's law, the electrical force, F between two charges q and Q is directly proportional to the product of the charges.

So, F ∝ qQ

If the same amount of electrons are added to both charges and the charges are opposite in sign, the magnitude of one charge  increases while that of the other charge decreases. so the product qQ decreases and thus F decreases.

So, the electric force decreases when the same amount of electrons is added to two objects that have opposite charges.

Answer:

A increases

Explanation:

Answer:

The force of the ball on the bat is same as the force of the bat on the ball.  

Explanation:

A bat hits the ball and the ball moves to the out filed.

According to the Newton's third law, for every action there is an equal and opposite reaction.

The action and the reaction forces acts on the two different bodies but the magnitude of the force is same.  

As the ball is hitted by the bat, the bat exerts the force on the ball and the same force is exerted on the bat by the ball according to the Newton's third law.

So, the force of the ball on the bat is same as the force of the bat on the ball but the direction of force is opposite.  

Answer:

7. 5 pa

8. 5 pa

9. 5 pa

10. 75 pa

11. 25 N

Explanation:

7.

P = F/ A

= 15 / 3

= 5 pa

8.

P = F/ A

= 35 / 7

= 5 pa

9.

area of floor = l × b

= 1 × 4

= 4m^ 2

P = F / A

= 20 / 4

=5 pa

10.

area in m^2 = 400/100 = 4m^2

P = F/A

= 300 / 4

= 75 pa

11.

F = P×A

= 25×1

= 25 N

Answer:

vibrates, and they carry energy from one place to another. Look at the sound wave and the water wave. vibrating electric charges and can travel through space where matter is not present. to particle, electromagnetic waves travel by transferring energy between vibrating electric and magnetic fields.

Answer:

B = 0.159 T

Explanation:

Given that,

Current, I = 0.38 A

The average velocity of the electron, [tex]v=5.5\times 10^{-6}\ m/s[/tex]

The average magnetic force on the electron, [tex]F=1.4\times 10^{-25}\ N[/tex]

We need to find the flux density B of the magnetic field. We know that the magnetic force is given by :

[tex]F=qvB\\\\B=\dfrac{F}{qv}[/tex]

Put all the values,

[tex]B=\dfrac{1.4\times 10^{-25}}{1.6\times 10^{-19}\times 5.5\times 10^{-6}}\\\\B=0.159\ T[/tex]

So, the required flux density of the magnetic field is 0.159 T.

Answer:

heat and power

Explanation:

is the simultaneous production of electricity and heat both of which are used

Answer:

Amplitude

Explanation:

The lower the amplitude, the lower the frequency.

Answer:

Please provide more information!

Explanation:

Answer:

1.75

Explanation:

Answer:

B: 50 N/m

Explanation:

Hopes it help.

The spring constant of the spring is 50 N/m. The correct option is B.

When the spring is compressed, it gets compressed up to its elastic limit. When load is removed from the spring, it regains its shape and obtains equilibrium position. The energy stored in this process is called as spring potential energy.

Given a spring has 100 J of EPE when it is stretched 2 m. The energy stored in the spring is given by

SPE = ½ kx²

100 = ½ k (2 m)²

k = 50 N/m

So, spring constant of the spring is 50 N/m.

Thus, the correct option is B.

Learn more about spring potential energy.

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#SPJ2

Answer:

Atoms are composed of electrons (charge -1), protons (charge +1), and neutrons (no charge). So in a neutral atom the correct answer is "D".

Answer: suppressed; chemotherapy

Explanation:

Chemotherapy is typically a drug treatment whereby powerful chemicals are used to kill the fast growing cells in ones body. Chemotherapy is usually used in the treatments of cancer.

Research revealed that patients who received chemotherapy in a hospital setting subsequently experienced

a (suppressed) immune response when they again visited the hospital. In this example, the (chemotherapy) would be classified as the US.

Answer:

a) Yes, this is kinda the best way to split the teams.

b) Force (or acceleration, these are proportional)

Explanation:

For both questions, we should start with the second Newton's law.

This law can be written as:

F = m*a

force equals mass times acceleration.

a) For the case of the rope, the ideal situation is having almost the same mass in both ends of the rope, in this way, the relation between force and acceleration in each end will be equivalent. (while one could argue that 3 smaller people will actually have a larger mass than the two bigger ones) but yes, this way is a good way to split the teams, so the mass is as even as possible.

b) Acceleration is defined as the rate of change of the velocity.

Again, by the above equation:

F = m*a

We need to have a force if we want to have acceleration.

Then, if an object has constant velocity (if the object is at a full stop, then it has a constant velocity of 0 m/s) we need to apply a force to this object if we want to change its motion.

Similarly, if an object is accelerating, we can apply a force to the object in order to cancel that acceleration (if the net force applied in the object is zero, then the acceleration is zero)

So here we can conclude that a force is what causes an object to change its motion.

Answer:

f =-20 cm

Explanation:

Given that,

The magnification of a spherical mirror, m = -1

The image distance, v = 40 cm (for negative magnification)

The magnification of a concave mirror is negative. The mirror showing -1 magnification is a concave mirror.

Let f be the focal length of the mirror. We know that,

[tex]m=\dfrac{-v}{u}\\\\-1=\dfrac{-v}{u}\\\\v=u[/tex]

Object distance, u = -40 cm

Using mirror's formula i.e.

[tex]\dfrac{1}{f}=\dfrac{1}{u}+\dfrac{1}{v}\\\\f=\dfrac{1}{\dfrac{1}{-40}+\dfrac{1}{-40}}\\\\f=-20\ cm[/tex]

So, the focal length of the mirror is 20 cm.

Answer:

5 N

Explanation:

Given that,

A large bar magnet of mass 0.4 kg exerts a 5 N force on a small bar magnet (mass of 0.1 kg) located 20 cm away.

We need to find the force exerted by the small bar magnet on the large one.

We know that, every action has an equal and opposite reaction. Both action and reaction occur in pairs. The force acting on one object to another is same and in opposite direction on the other object.

Hence, the force exerted by the small bar magnet on the large one is also 5 N.

Answer:

v = 12.8 m/s

Explanation:

Applying the law of conservation of energy:

[tex]m_1u_1+m_2u_2=m_1v_1+m_2v_2[/tex]

where,

m₁ = mass of baseball = 149 kg

m₂ = mass of catcher = 57 kg

u₁ = initial speed of ball = 17.7 m/s

u₂ = initial speed of catcher = 0 m/s

v₁ = v₂ = v = final speed of ball and the final speed of catcher = ?

both are same because ball is in hands of cathcer in the final state.

Therefore,

[tex](149\ kg)(17.7\ m/s)+(57\ kg)(0\ m/s)=(149\ kg)(v)+(57\ kg)(v)\\\\v = \frac{2637.3\ kgm/s}{206\ kg}[/tex]

v = 12.8 m/s

Answer:

W = 0 J

Explanation:

The amount of work done by gas at constant pressure is given by the following formula:

[tex]W = P\Delta V[/tex]

where,

W = Work done by the gas

P = Pressure of the gas

ΔV = Change in the volume of the gas

Since the volume of the gas is constant. Therefore, there is no change in the volume of the gas:

[tex]W = P(0\ m^3)\\[/tex]

W = 0 J