PLEASE HELP THE TEST IS DUE AT 11:59PM
24 p and 25 e is a negative atom because it has one electron and became

Answers

Answer 1

Answer:

and became negativity charged

Explanation:

this is because it has an extra electron and does not maintain extet or duplet structure


Related Questions

Explain how the writing on the arm let, specified in paragraph 4, contributes to the development of the story. The story “The Water Of Life”

Answers

Answer:

Answer:

This week in class, we’re reading "The Water of Life" by Howard Pyle.

In Howard Pyle’s “The Water of Life”, a king abuses his power by asking a faithful servant to complete difficult tasks for him, hoping to win the love of a princess.

As we read, we will be discussing the themes of Morality, Power & Greed, and Resilience & Success as they relate to the text. We are trying to answer these big questions :

"What is good and how do we know?", "Why do people succeed?", and "How does power corrupt?"

Explanation:

Answer:

Explanation:

It is not exactly a physics question...

The story "The Water Of Life" is about a king and his faithful servant.

The servant worn an armlet on his arm.

The following words were written on the armlet: Who thinks to wear me on an arm, must lack both guile and thought of harm."

That writing further develops the story as it reflects on the king's sending his servant to help a princess who was upset after her bird died.  The story's theme is about power, greed and resilience.

hello I need the formula for getting the focal length of a concave mirror​

Answers

The focal length of a concave mirror is negative and that of a convex mirror is positive. You can also prove the same by using the mirror formula (1/f = 1/v +1/u).

Let's see how,

Since we know object is always placed on the left side or direction opposite to the incidence ray of the mirror. Therefore object distance will always be negative.

u = -u

v = -v (Image distance is negative, since image formed by concave mirrors are generally on the left side or direction opposite to the incidence ray)

Using mirror formula,

1/f = 1/v +1/u

or, 1/f = (-u-v)/uv

or, f = -uv/(u+v)

As you can see, The value of f is negative here…

However v is not always negative in concave mirror, when object is placed between focus and pole, you will get a virtual image on the right side of the mirror, so in this case image distance will be positive. But even in this case focal length will be negative. How?

Just use the mirror formula again, and you will know how.

A 45 kg object has a momentum of 225 kg-m/s northward. What is the object's velocity?
A. 5.0 m/s
B. 180 m/s
C. 10,125 m/s
D. 0.20 m/s

Answers

5.0 m/s that’s is the answer hopefully it’s correct

Answer:

Momentum = m x v

225 = 45 x v

÷45

5 = v

Velocity is 5m/s

Answer is A

Hope this helps!

2. Which is NOT a unit of speed?
A. kilometer/hour
B. meter/second
C. miles/hour
D. second/meter​

Answers

The answer is D) second/meter

Does a magnetic field require any tr ansfer or movement of mass or particles?​

Answers

Answer:

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. In a magnetic field, a moving charge experiences a force that is perpendicular to both its own velocity and the magnetic field. The magnetic field of a permanent magnet attracts or repels other magnets, as well as ferromagnetic elements like iron. Furthermore, a varying magnetic field exerts a force on a variety of non-magnetic materials by changing the mobility of their outer atomic electrons.

Explanation:

:) hope this helps

Two large parallel metal plates are 6.0 cm apart. The magnitude of the electric field between them is 600 N/C. What work is done when one electron is moved from the positive to the negative plate? Note: the charge of an electron is 1.6 x 10-19 C.


3.36 x 10-20 J



4.98 x 10-17 J



1.6 x 10-19 J



5.76 x 10-18 J

Answers

Answer:

Approximately [tex]5.76 \times 10^{-18}\; {\rm J}[/tex] (by the external force that moved the electron.)

Explanation:

Let [tex]q[/tex] denote the magnitude of a charge in an electric field of magnitude [tex]E[/tex]. The magnitude of the electrostatic force on that charge would be:

[tex]F = q\, E[/tex].

In the electric field in this question, the magnitude of the electric force on the electron would be:

[tex]\begin{aligned}F &= q\, E \\ &= 1.6 \times 10^{-19}\; {\rm C} \times 600\; {\rm N \cdot C^{-1}} \\ &= 9.6 \times 10^{-17} \; {\rm N}\end{aligned}[/tex].

Moving the electron to the other plate would thus require an external force of [tex]9.6 \times 10^{-17}\; {\rm N}[/tex].

This force needs to be exerted over a distance of [tex]6.0\; {\rm cm}[/tex] ([tex]6.0 \times 10^{-2}\; {\rm m}[/tex].) The direction of the motion is the same direction as that of the external force. Thus, the work that needs to be done would be:

[tex]\begin{aligned}W &= F\, s \\ &\approx 9.6 \times 10^{-17}\; {\rm N} \times 6.0 \times 10^{-2}\; {\rm m} \\ &\approx 5.76 \times 10^{-18}\; {\rm J}\end{aligned}[/tex].

Two carts collide and bounce apart. Cart 1 had a momentum of –6 kg • m/s before the collision. Cart 2 had a momentum of 10 kg • m/s before the collision.

What is the total momentum of the carts after the collision?

–16 kg • m/s
–10 kg • m/s
4 kg • m/s
10 kg • m/s

Answers

Answer:

4 kg m/s

Explanation:

When finding momentum after a collision, you can just add the momentums together, this would be 10 kgm/s -6 kgm/s to get 4 kgm/s

The total momentum of the carts after the collision is 4 kgm/s.

What is momentum?

The momentum of an object is the product of mass and velocity of the object.

P = mv

Total momentum of the carts

The total momentum of the carts is calculated as follows;

P = P₁ + P₂

P = -6 + 10

P = 4 kgm/s

Thus, the total momentum of the carts after the collision is 4 kgm/s.

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When greater pressure is applied to the accelerator to increase speed to pass someone or merge it is called _________ acceleration.

Answers

Thrust acceleration is the  application of  great pressure to the accelerator to increase speed.

Thrust acceleration

Thrust acceleration

Generally,greater pressure is applied to the accelerator it is obvious that the driver of the system is making an attempt to increase speed of the system for a specific time frame

Therefore, when greater pressure is applied to the accelerator to increase speed it is refereed to as thrust acceleration.

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Which would exert the most gravity on a spacecraft that is passing close to Jupiter?
A Earth
B Saturn
C Sun
D Jupiter

Answers

D. Jupiter has the highest amount of gravity in our solar system

Jupiter would exert the most gravity on a spacecraft that is passing close to Jupiter. Hence option D is correct.

What is Jupiter ?

The biggest planet in the Solar System, Jupiter, is the fifth planet from the Sun. It is a gas giant with a mass that is slightly less than one thousandth that of the Sun and more than two and a half times that of all the other planets in the Solar System put together. After the Moon and Venus, Jupiter is the third brightest natural object in the Earth's night sky, and people have been seeing it since ancient times. Jupiter, the main deity of ancient Roman religion, inspired its name.

Helium makes up a quarter of Jupiter's mass and a tenth of its volume, whereas hydrogen makes up 90% of the planet's volume. Jupiter's interior is constantly contracting, which produces more heat

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On a fake planet, you find that on a certain day at noon no shadow is cast. At the same time your friend sees a shadow due to the Sun being 12 degrees away from the Zenith. Knowing the distance between you and your friend is 500 km, what is the circumference of this fake planet

Answers

Answer:

In 250 BC, Eratosthenes measured the circumference to be about 24,500 miles:

by this method, 12 deg = 12 / 360 = 1/30 of the planet's surface\

30 * 500 km = 15,000 km in circumference, about 9,200 miles

Three horizontal forces are pulling on a
ring, at rest. Fy is 6.25 N at a 180° angle,
and F2 is 8.90 N at a 243° direction. What
is the x-component of F3?

Answers

Answer:

-(F1+F2)y

Explanation:

add up F1 and F2 using x-y components

Since the three forces balance,

F3y = -(F1+F2)y

Answer: 10.29

Explanation:

F1: 6.25cos(180°) = -6.25

F2: 8.90cos(243°) = -4.04

F3: -6.25 + (-4.04) = 10.29

A dancer moves around a path like the one
shown in the figure below with a constant
speed

Which of the following best represents the
magnitude of the dancer's acceleration as a
function of time t during one trip around the
path, beginning at point P?
21

Answers

Given what we know, despite not having the figure attached to the question, we can still confirm that the magnitude for the acceleration of the dancer will be zero.

Why is the dancer's acceleration equal to zero?

This has to do with how the question clarifies the speed of the dancer. Though it does not give us an exact value, we are told that the speed is constant. This is an indicator that the acceleration is zero because with any other value for acceleration the speed cannot remain constant.

Therefore, given that any value for acceleration will increase or decrease the speed of the dancer, but we are told that the dancer's speed is constant throughout the trip, we can confirm that the magnitude for the acceleration of the dancer is zero.

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How do greenhouse gasses help warm the planet?

Answers

Answer:

Greenhouse gases include carbon dioxide, methane, nitrous oxide and other gases that accumulate in the atmosphere and create the heat-reflective layer that keeps the Earth at a livable temperature. These gases form the insulation that keeps the planet warm enough to support life.

what does displacement mean in an equation?

Answers

i think it means its in a wrong place, its been put in a wrong place

Please help me with this question

Answers

Answer:

D

Explanation:

the energy increased so the amplitude got taller and the wave length got shorter.

10. With a class 1 lever, does mechanical advantage increase or decrease as the fulcrum is moved closer to the load? Explain why. ​

Answers

Answer:

Class 1 Levers: Moving the fulcrum closer to the load will increase the mechanical advantage. Moving the effort farther from the fulcrum will increase the mechanical advantage.

Explanation:

Hope it helps you

Ignoring the sign, which has a greater magnitude of charge?.

Answers

Answer:

the car

Explanation:

Calculate the slope of the line on the graph using the formula:

m = m = v subscript 2 - v subscript 1 over x subscript 2 minus x subscript 1.


The slope of the line is
m/s.

Answers

From the given graph of position v/s time, the velocity can be determined by calculating the slope of the linear curve. The slope of the line is  4 m/s.

What is velocity?

Velocity of an object is the measure of the distance it travelled per unit time. Velocity is a vector quantity having magnitude and direction. It has the common unit of m/s.

Velocity is the ratio of change in distance to the change in time. Hence, let Δx be the distance and Δt be the time change.Then velocity is :

v =  Δx / Δt .

In the given graph the distance covered within 2 seconds is 8 m. Then the velocity is :

v = 8/2 = 4 m/s.

It is the slope of the linear curve in the graph. Therefore, the velocity of the object is 4 m/s.

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Answer:

From the given graph of position v/s time, the velocity can be determined by calculating the slope of the linear curve. The slope of the line is  4 m/s.

Explanation:

it is right

which technology is applied in a plough?​

Answers

Answer:

sulphite is what equation

Explanation:

gas

liquid

solid

aqueous

answer asp. What happens when you place ice in a hot cup of water? will give brainliest

Answers

Answer:

When you add ice to hot water, the ice melts and the hot water cools

Explanation:

When ice is poured in a hot cup of water, the ice melts and then mixes with the hot water cooling and lowering the temperature. The weight increases when ice added. process occurring: ice melting to liquid.

What are the advantages of ring system wiring?​

Answers

Answer:

The two most common advantages of the ring system are as follows:

- Voltage drop across the circuit is less or negligible when compared with the tree system.

- More appliances can be connected across the circuits as the supply is radially distributed across the space

We have that the  advantages of ring system wiring is given as

Voltage drop across the circuit very smallMore load space is available as the supply point is distributed across the circuit

Ring Wiring

Question Parameters:

Generally, A ring system wiring is  wiring method where we see the sockets and distribution outlets to be connected in a ring-like manner.

We have that its advantage are

Voltage drop across the circuit very smallMore load space is available as the supply point is distributed across the circuit

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how long did it take the flag to rotate once in a full circle

Answers

Answer:

360 degrees is one full rotation starting at zero

it take 2 s  to the flag to rotate once in a full circle  with 3 rad/s of angular velocity.

What is Angular velocity and acceleration ?

Angular velocity is "rate of change of angular displacement with respect to time". i.e. ω= dθ/dt. it is also defined as angular displacement over time. i.e. ω = angular displacement/Time.

Angular velocity shows how much angle can be covered in unit time. It's SI unit rad/s.

Angular acceleration is rate of change of Angular velocity with respect to time.

i.e. α = dω/dt if an object changes its angular velocity in short time, we can say that it has greater angular acceleration. It is expressed in rad/s².

In this problem we have to calculate time, but the angular velocity id not given.

Consider the angular velocity is 3 rad/s.

Given,

Angular displacement θ = 2π

angular velocity ω = 3 rad/s

Time t = ?

Time = θ/ω

Time = 2π/3 rad/s = 2 s

Hence the answer is 2s.

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A nurse counts 76 heartbeats in one minute.
How many heartbeats would occur in 30 seconds?

Answers

Answer:

38

Explanation:

76 divided by 2 =38

38. This is right i just solved it

A catapult is a device that throws heavy stones. The stone sits in a basket at the end of an arm. The arm moves fast, and the stone is launched toward the target. What type of force does the catapult apply to the stone

Answers

Elastic force is the type of force which the catapult applies to the stone.

What is a Catapult?

This is a launching device which is composed of rubber and used in the study of projectile motion.

The type of force present in a rubber is elastic force which is applied as a result of pressure on it when the individual launches the stone towards the required target.

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The catapult applies elastic force to the stone which is converted to kinetic energy of the flying stone.

What Elastic potential energy?

Elastic potential energy is the type of energy that is stored in an elastic material.

The catapult is an elastic material that converts elastic energy into kinetic energy of flying stone.

Thus, the catapult applies elastic force to the stone which is converted to kinetic energy of the flying stone.

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A car travels 50 km in 10 hr. What was the average speed of the car?

Answers

Answer:

5km

Explanation:

Just helping

If 50km divided by 10hrs =5

Sorry if I'm wrong but that's what I got

Calculate the minimum height that 7.0 kg of water must fall to gain 1300 J of kinetic energy.​

Answers

Explanation:

K=mgh\\1300=(7)(9.8)h\\h=19\ mK=mgh

1300=(7)(9.8)h

h=19 m

FOR THOSE SMARTIES!! If the speed of an object is doubled, which of the following must also double?
a. the mass of the object
b. the kinetic energy of the object
c. the gravitational potential energy of the object
d. none of these

Answers

Answer:

i think b sorry if im wrong!

Explanation:


[tex]\qquad \qquad\huge \underline{\boxed{\sf question}}[/tex]


How do you find the coordinates of centre of mass of multiple particle system ? ​

Answers

By dividing the moments around the y-axis and around the x-axis,

respectively, by the total mass, the x- and y-coordinates of the centre of

mass may be determined.

formula's:

[tex]y.cm=\left[\begin{array}{ccc}\frac{m1y1+m2y2+...}{m1+m2+...}\end{array}\right][/tex][tex]x.cm=\left[\begin{array}{ccc}\frac{m1x1+m2x2+....}{m1+m2+.....}\end{array}\right][/tex]

centre of two mass particle system: [tex]\left[\begin{array}{ccc}(m1+m2) r.cm =(m1 )r1+(m2) r2\end{array}\right][/tex]

Find the number of electrons in the subshell with azimuthal quantum number l=2

Answers

Answer:

23 electrons

Explanation:

i just know because im a god

How much force is needed to accelerate an object of mass 90 kg at a rate of 1.2 m/s2?

0.013 N
75 N
108 N
1080 N

Answers

Answer:

108 N

Explanation:

F = ma

F = (90kg)(1.2m/s^2)

F = 108 N

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