An electron has a kinetic energy that is twice its rest energy. Determine its speed. Group of answer choices

The gravitational force when the distance between them is halved is 40 N

Newton's law of universal gravity states as follow:

F = GM₁M₂ / r²

Where

Finding a relationship between force and distance, the following were obtained:

F = GM₁M₂ / r²

Cross multiply

Fr² = GM₁M₂

GM₁M₂ = constant

F₁r₁² = F₂r₂²

Now, we can obtain the new gravitational force of as illustrated below:

F₁r₁² = F₂r₂²

10 × r² = F₂ × (0.5r)²

10r² = F₂ × 0.25r²

Divide both side by 0.25r²

F₂ = 10r² / 0.25r²

F₂ = 10 / 0.25

F₂ = 40 N

Thus, the gravitaional force is 40 N

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If An object is placed at the position x1 = 73 cm and a second mass that is 4/3 times as large is placed at x2 = 247 cm, the location is at 172.44cm

The location of he center of the mass of the object would be

73 cm + (4/3 * 247) / 1 + 4/3

= 73 CM + 329.3 / 2.333

= 402.3 /2.33

= 172.44 CM

Hence we can conclude that the location is at If An object is placed at the position x1 = 73 cm and a second mass that is 4/3 times as large is placed at x2 = 247 cm, the location is at 172.44cm

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Answer:

=3 metre per second ^2

Explanation:

Formula for acceleration is

V-U÷T

In the given information

V=16

U=4

T=4

Acceleration =16-4/4

=3 metre per second ^2

Answer: False

explanation: because Total momentum is conserved only if the collision can be considered isolated from the influence of net external forces

Answer:

Explanation:

To find the net electric flux through a closed surface, we need to apply Gauss's law:

Phi_E = Q_enclosed / epsilon_0

where Phi_E is the electric flux, Q_enclosed is the net charge enclosed by the closed surface, and epsilon_0 is the electric constant.

Let's consider a spherical closed surface of radius R enclosing the charges. We can divide the surface into two regions: inside and outside the sphere.

For the charges inside the sphere, the net charge enclosed is:

Q_enclosed = +1.00 nC - 3.00 nC = -2.00 nC

Therefore, the electric flux through the inner surface of the sphere is:

Phi_E_inside = Q_enclosed / epsilon_0 = (-2.00 nC) / epsilon_0

For the charge outside the sphere, the net charge enclosed is:

Q_enclosed = +2.00 nC

Therefore, the electric flux through the outer surface of the sphere is:

Phi_E_outside = Q_enclosed / epsilon_0 = (2.00 nC) / epsilon_0

The net electric flux through the closed surface is the sum of the electric flux through the inner and outer surfaces:

Phi_E_net = Phi_E_inside + Phi_E_outside = (-2.00 nC) / epsilon_0 + (2.00 nC) / epsilon_0

= 0

Therefore, the net electric flux through the closed surface is zero. This means that the total amount of electric field lines entering the surface is equal to the total amount of electric field lines leaving the surface. This result is consistent with Gauss's law, which states that the net electric flux through a closed surface is proportional to the net charge enclosed by the surface. In this case, since the net charge enclosed is zero, the net electric flux is also zero.

Answer: Synthetic polymers are lightweight.

Explanation:

A  benefit of using synthetic polymers is the fact that synthetic polymers are lightweight.

A polymer is a molecule composed of many repeating subunits.

Synthetic polymers are artificial polymers created by humans.

Most of the synthetic polymers are not biodegradable (unlike natural fibers such as cotton).

Synthetic polymers are classified according to their use into plastics, elastomers and synthetic fibers.

The advantages of synthetic polymers include: hard to break, being lightweight, and they last for a long time.

In conclusion, a benefit of using synthetic polymers is the fact that synthetic polymers are lightweight.

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Answer:

Disease are caused by micro organisms

All objects in the universe are attracted to one another

species evolved through natural selection

The scientific facts from the given list are,

Microorganisms that are too tiny to be seen with the bare eye are the primary cause of many illnesses.

The force of gravity draws all objects in the cosmos toward one another.

Natural selection is the process through which species change.

Science is the methodical, empirically-based pursuit and application of knowledge and understanding of the natural and social worlds.

Microorganisms that are too tiny to be seen with the bare eye are the primary cause of many illnesses.

The force of gravity draws all objects in the cosmos toward one another.

Natural selection is the process through which species change.

Therefore options A, B, and C are scientific facts.

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Answer:no

Explanation:

Answer:

1) 327

2) 3

3) 109

------------

now I'm not 100% sure #4-6 are correct, but if 4 is right then 5 and 6 are, too.

4) 1074

5) 1074 + 109t

6) 2382

Explanation:

Tina's speed as she passes David is 25.0 m/s, which is the same as David's speed. To solve this problem, we can use the kinematic equations of motion:

Position as a kinematic equations of time: x = x0 + v0t + (1/2)at^2

Final velocity as a function of time: v = v0 + at

First, let's find out how long it takes for Tina to catch up to David. We can use the second equation above to find the time it takes for Tina to reach David's speed:

v = v0 + at

25.0 m/s = 0 + 2.60 m/s^2 * t

t = 9.62 s

Now we can use the first equation to find how far Tina travels during that time:

x = x0 + v0t + (1/2)at^2

x = 0 + 0 + (1/2)(2.60 m/s^2)(9.62 s)^2

x = 120.3 m

Therefore, Tina drives 120.3 meters before passing David. To find her speed as she passes David, we can use the second equation above:

v = v0 + at

v = 0 + 2.60 m/s^2 * 9.62 s

v = 25.0 m/s is the final velocity.

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Answer:

\(c=1\ J/g^\circ C\)

Explanation:

Given that,

Heat required, Q = 8000 J

Mass, m = 400 g

The change in temperature, \(\Delta T = 20^{\circ}\)

The heat required due to change in temperature is given by :

\(Q=mc\Delta T\\\\c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{8000 }{400\times 20}\\\\c=1\ J/g^\circ C\)

So, the specific heat of the substance is \(1\ J/g^\circ C\)

F - f = ma

The sum of forces on the x-axis = ma (since it is not stated that the forces are in equilibrium)

By resolving the Free Body

Simplifying the equation above, we have:

F - f = ma

Answer:

1 month

Explanation:

Distance = (speed) x (time)

Distance = (10 meter/second) x (2 minutes)

Distance = (10 meter/second) x (2 minutes) x (60 second/minute)

Distance = (10 x 2 x 60) (meter-minute-second / second-minute)

Distance = 1,200 meters

The tangential speed of a wad of chewing gum to the rim of the wheel is approximately 1337.659 centimeters per second.

Let suppose that the wheel rotates at constant angular speed (\(\omega\)), in radians per second, the tangential speed of a wad of chewing gum to the rim of the wheel (\(v\)), in centimeters per second, is:

\(v = 2\pi\cdot r\cdot f\) (1)

Where:

If we know that \(f = 5.13\,hz\) and \(r = 41.5\,cm\), then the tangential speed of the chewing gum is:

\(v = 2\pi\cdot (41.5\,cm)\cdot (5.13\,hz)\)

\(v \approx 1337.659\,\frac{cm}{s}\)

The tangential speed of a wad of chewing gum to the rim of the wheel is approximately 1337.659 centimeters per second.

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Given,

Lia dropped a coin from a certain height above the ground. She measured and represented its displacements x1, x2, and x3 in the first, second, and third seconds of its fall.

To find

The ratio of x1, x2, and x3

Explanation

By equation of kinematics we have,

Considering initial velocity to be zero we get,

where s is the distance travelled.

With acceleration due to gravity being constant we have,

So the ratio of the distances is

Conclusion:

The required ratio is

Answer:

Endurance, or aerobic

Strength, or resistance training

Balance

Flexibility

Explanation:

Answer:

Walking. Walking is simple, yet powerful. It can help you stay trim, improve cholesterol levels, strengthen bones, keep blood pressure in check, lift your mood, and lower your risk for a number of diseases (diabetes and heart disease, for example).

Answer:

Explanation:

You guys are rude just because she accidentally did the wrong pic dont mean you gotta be rude

this is the answer + im doing this test

Answer:

68 N

Explanation:

We have a force of 80 N going to one direction and 12 N to the other direction. we subtract 12 from 80 and get 68 N which is the total net force

The net force acting on the wagon is equal to 68 N.

The net force acting on an object can be defined as the vector sum of all forces acting. The net force is a single force that can give same the effect as the original forces on the object's motion.

The net force will be the resultant force with a similar effect on the rotational motion as all actual forces taken together by the object.

In the question, the applied force will act in the opposite direction of the frictional force so we need to subtract these two forces to find the net force.

Given, the applied force to push the wagon = 80 N

The frictional force between wagon and ground = 12 N

The net force on the wagon = 80N + (-12N) = 68 N

Therefore, the net force equal to 68 N will act in the direction of the applied force.

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If the magnetic field within a long straight solenoid with a circular cross section and radius R is increasing at a rate of db/dt it will give us the magnitude of the induced EMF.

If we consider a long straight current carrying conductor in which the magnetic field is constantly increasing or decreasing with the rate of db/dt.

If the area of the solenoid is A.

Then the magnitude of the induced EMF in the conductor will be given by the relation.

E = Adb/dt

Now, from the above relation we can conclude that the EMF in a conductor is changing with a change in area and also the change in the magnetic field.

We can also rewrite the above relation,

E = dM/dr

Where,

d = BA.

Where,

B is magnetic field and A is the area.

Here, M is collectively called the magnetic flux.

So we can conclude that the rate of change of magnetic flux is directly proportional to the EMF induced in the conductor.

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Answer:

If I say the correct answer is B.280

The two sentences that best state the central ideas of Wiesel's speech are:

Elie Wiesel's speech focuses primarily on the Holocaust and the atrocities that were committed during that time, particularly at Auschwitz. The central ideas of his speech are:

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In this case Behavioral therapy  is being used.

A broad phrase used to describe several forms of therapy used to address mental health conditions is behavioural therapy.

This type of treatment aims to recognize and assist in changing potentially harmful or unhealthy behaviors. It is predicated on the notion that all behaviors are taught and that they are modifiable. Treatment frequently focuses on current issues and solutions.

When staff members at the mental health center do not respond to patients who use threats, but praise patients who are polite, they try to teach politeness and other good behavior by using  Behavioral therapy.

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An electric motor converts electric energy into mechanical energy. So, the right option is C.

In contrast to an electric generator, an electric motor transforms electrical energy into mechanical energy.

They function according to electromagnetism's principles, which demonstrate that a magnetic field's electric current exerts a force.

In the magnetic field, this force produces a torque that spins a loop of wire, causing the motor to function.

Fans, power tools, appliances, electric vehicles, and hybrid vehicles are just a few examples of the many uses for electric motors.

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Answer:

The appropriate answer is "0.9152 seconds".

Explanation:

The given values are:

Maximum speed,

v = 8.85 m/s

Acceleration,

u = 9.67 m/s²

Now,

⇒ \(v = u+at\)

By putting the values, we get

⇒ \(8.85=0+9.67t\)

⇒      \(t=\frac{8.85}{9.67}\)

⇒         \(=0.9152 \ second\)    

Writing in an online journal is different from writing in a paper one in the following way: it is easier to communicate online (option B).

A journal is a newspaper or magazine dealing with a particular subject.

A journal is an efficient medium to communicate the findings or results of an investigation to the public.

However, a journal can be virtual (online) or paper (hard copy). In this 21st century, it is easier to communicate to the masses online because more audience will be captured.

Therefore, writing in an online journal is different from writing in a paper one in the following way: it is easier to communicate online.

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