3. When atoms gain or lose electrons, the atom becomes an

p(1) = -16 x (1)³ + 3 x (1)² + 8 x 1 + 4

= -16 + 3 + 8 + 4

= -16 +16

=0

Answer:

huh

Explanation:

Answer:

whaaaaaaaa

Explanation:

Answer:

T = 2.28 s

Explanation:

Given that,

The radius of the wheel, r = 0.4 m

The tangential velocity of the wheel, v = 1.1 m/s

We need to find the period of the ball as it travels around the wheel. Let it is T. We know that, the tangential speed is given by :

[tex]v=\dfrac{2\pi r}{T}\\\\T=\dfrac{2\pi r}{v}\\\\T=\dfrac{2\pi \times 0.4}{1.1}\\\\T=2.28\ s[/tex]

So, the period of the ball is equal to 2.28 s.

Answer:

a) The angle of refraction is approximately 34.7

b) The angle the light have to be incident to give an angle of refraction of 90° is approximately 53.42°

Explanation:

According to Snell's law, we have;

[tex]\dfrac{n_1}{n_2} = \dfrac{sin (\theta_2)}{sin (\theta_1)}[/tex]

The refractive index of the glass, n₁ = 1.66

The angle of incident of the light as it moves into water, θ₁ = 27.2°

a) The refractive index of water, n₂ = 1.333

Let θ₂ represent the angle of refraction of the light in water

By plugging in the values of the variables in Snell's Law equation gives;

[tex]\dfrac{1.66}{1.333} = \dfrac{sin (\theta_2)}{sin (27.2^{\circ})}[/tex]

[tex]sin (\theta_2) = sin (27.2^{\circ}) \times \dfrac{1.66}{1.333} \approx 0.5692292265[/tex]

θ₂ = arcsin(0.5692292265) ≈ 34.7°

The angle of refraction of the light in water, θ₂ ≈ 34.7°

b) When the angle of refraction, θ₂ = 90°, we have;

[tex]\dfrac{1.66}{1.333} = \dfrac{sin (90^{\circ})}{sin (\theta_1)}[/tex]

[tex]sin (\theta_1) = \dfrac{sin (90^{\circ})}{\left( \dfrac{1.66}{1.333}\right)} = sin (90^{\circ}) \times \dfrac{1.333}{1.66} \approx 0.803[/tex]

θ₁ ≈ arcsin(0.803) ≈ 53.42°

The angle of incident, θ₁, that would give an angle of refraction of 90° is θ₁ ≈ 53.42°

Answer:

11.78meters

Explanation:

Given data

Mass m = 100kg

Length of cord= 10m

Spring constant k= 35N/m

At the greatest vertical distance, the spring potential energy is equal to the gravitational potential energy

That is

Us=Ug

Us= 1/2kx^2

Ug= mgh

1/2kx^2= mgh

0.5*35*10^2= 100*9.81*h

0.5*35*100=981h

1750=981h

h= 1750/981

h= 1.78

Hence the bungee jumper will reach 1.78+10= 11.78meters below the surface of the bridge

Answer:

[tex]X=74.7[/tex]

Explanation:

From the question we are told that:

Mass [tex]m=100kg[/tex]

Length [tex]l=10m[/tex]

Spring constant [tex]\mu=35N/m[/tex]

Generally the equation for potential energy of mass is mathematically given by

 [tex]P.E_m=mgh[/tex]

Since

 [tex]P.E_m=P.E_s[/tex]

Where

 P.E_s =potential energy of spring

Therefore

[tex]m*g*(x+10) = 0.5*k*\mu^2[/tex]

[tex]100*9.8*(x+10) = 0.5*35*\mu^2[/tex]

[tex]980*(x+10) = 17.5*\mu^2[/tex]

[tex]980*x+9800 = 17.5*\mu^2[/tex]

 [tex]17.5*\mu^2 - 980*\mu - 9800 = 0[/tex]

Comparing the equation above with standard quadratic equation

 [tex]17.5*\mu^2 - 980*\mu - 9800 = 0[/tex]

 [tex]ax^2+bx+c=0[/tex]

Giving

  [tex]a=17.5\\ b=-980\\ c=-9800[/tex]

Solving Quadratic equation the roots of the equation is given as

 [tex]\mu_1=64.66[/tex]

 [tex]\mu_2=-8.661[/tex]

Since

[tex]\mu[/tex] can not be -ve

Therefore

The vertical distance attained by the bungee jumper is given as

 [tex]X=\mu+l[/tex]

 [tex]X=64.7+10[/tex]

 [tex]X=74.7[/tex]

Answer:

if a uniform resistance wire is stretched till it's length becomes four times the the resistance of wire multiples by sixteen times as resistance is directly proportional to the

length of wire.

hope it helps.

Answer:

we have:

At unit length

Resistance [R]=[tex] \frac{pL}{A} [/tex].....i

where

p: resistivity

L:length

A:area

when

length is strength 4 times

length will be 4L

Now

new equation becomes

Resistance[R] =[tex] \frac{p4L}{A} [/tex]=4[tex] \frac{pL}{A} [/tex]=4R

so

when A uniform resistance wire is stretched till it's length becomes four times. the resistance increases by four times of its original resistance.

Answer:

the voltage across each resistor is one third of the battery voltage

Explanation:

In a series circuit, the current is constant throughout the circuit, so the battery voltage is equal to the sum of the voltage drop in each part of the series circuit.

        V = i (R₁ + R₂ + R₃)

in the exercise indicate that all resistance has the same value

         R₀ = R₁ = R₂ = R₃

        V = i 3 R₀

        V = 3 V₀

         V₀ = i R₀

          V₀= V / 3

the voltage across each resistor is one third of the battery voltage

Answer:

please give me brainlist and follow

Explanation:

Yes if the body is travelling with uniform speed in a circular track its speed remains the same but the velocity is non-uniform as the direction of the body is changing every time.

Answer: [tex]18.798\times 10^5\ J[/tex]

Explanation:

Given

Mass of snow is [tex]m=3\ kg[/tex]

First snow is converted to water at [tex]0^{\circ}C[/tex] and then it is taken to [tex]70^{\circ}C[/tex]

Heat required to convert the ice into water at [tex]0^{\circ}C[/tex]

[tex]Q_1=3\times 3.34\times 10^5\\Q_1=10.02\times 10^5\ J[/tex]

Heat required to raise temperature from [tex]0^{\circ}C[/tex] to [tex]70^{\circ}C[/tex]

[tex]Q_2=3\times 4180\times (70-0)\\Q_2=8.778\times 10^5\ J[/tex]

Total heat required

[tex]\Rightarrow Q=Q_1+Q_2\\\Rightarrow Q=10.02\times 10^5+8.778\times 10^5\\\Rightarrow Q=18.798\times 10^5\ J[/tex]

Answer:

Explanation:

when heat is trapped it is conducted to the trapped area and gradually heats up its surrounding

Answer:

7/3 = 2 1/3

Explanation:

If the numerator is greater than or equal to the denominator of a fraction, then it is called an improper fraction. In that case, you could convert it into a whole number or mixed number fraction. 7/3 = 2 1/3.

Answer:

2.3333 (3-repeating) hope that helps

Explanation:

This exposes the individual to danger. Remember, the Newton Law of motion which says that an object under the state of rest will remain in that state (inertia) unless when acted upon by an external force.

In this scenario, standing at the back of the pickup truck presents danger especially if the truck suddenly stops; this individual would experience an upward thrust due to inertia that may disbalance him.

Answer:

[tex]-9.06\:\mathrm{m/s^2}[/tex]

Explanation:

We can use the following kinematics equation to solve for acceleration:

[tex]v_f=v_f+at[/tex].

Solving for [tex]a[/tex]:

[tex]45=93+5.3a,\\-48=5.3a,\\a\approx \boxed{-9.06\mathrm{m/s^2}}[/tex]

*Note: Since acceleration is a vector quantity, it has both magnitude and direction. The negative sign implies that the acceleration is in the opposite direction of the racing dragster's movement.

Answer:

[tex]p=10\:\text{kgm/s}},\\v_f=1\:\text{m/s}[/tex]

Explanation:

From Newton's 2nd Law, we have [tex]\Sigma F=ma[/tex]. We can use this to find the acceleration of object after 20 N (force) is applied to the 10 kg object.

Substituting given values, we have:

[tex]\Sigma F=ma, \\20=10a,\\a=\frac{20}{10}=2\:\mathrm{m/s^2}[/tex]

Now that we have acceleration, we can find the final velocity of object (after 0.5 seconds) using the following kinematics equation:

[tex]v_f=v_i+at[/tex], where [tex]v_f[/tex] is final velocity, [tex]v_i[/tex] is initial velocity, [tex]a[/tex] is acceleration, and [tex]t[/tex] is time.

Solving for final velocity:

[tex]v_f=0+2\cdot 0.5,\\v_f=\boxed{1\:\text{m/s}}[/tex]

The momentum of an object is given as [tex]p=mv[/tex]. Since we've found the final velocity and mass stays constant, we have:

[tex]p=10\cdot 1=\boxed{10\:\text{kgm/s}}[/tex]

Answer:

Force has a direct relationship to mass and acceleration. Newton's Second Law, force equals mass times acceleration (F=MA), illustrates their general relationship in an equation.

Explanation:

Relationships to remember:

(Ex: The harder you push a box, the faster it will move)

(Ex: If you add more furniture in the back of a moving company truck, the truck will move slower than it did before the furniture was added)

(Ex: You will need to exert less force to lift a 5-pound weight than a 10-pound weight)

And of course, Newton's Second Law, F=MA sums all of this up in 3 letters and a symbol! If you have any more questions about this problem, please comment on my answer :)

Answer:

Increases.

Explanation:

The electric potential increases when the two positive charges of same magnitude bring close to one charge to another because there is repulsive force between them due to same charge and when the two opposite charges move away from each other, the potential energy decreases. When two opposite charges are brought closer together, electric potential energy decreases while on the other hand, when we move opposite charges apart from each other than the work done against the attractive force that leads to an increase in electric potential energy.

Answer:i think its 7.5

Explanation:

Answer:

work is the answer because work is said to be done if an object is displaced by the application of force

Answer:

You need to have the distance traveled and the time it took to travel that distance.

Explanation:

Answer:

They have a full shell of valence electrons and are very stable .

Explanation:

Answer

atoms in group 18 are chemically inert because they are stable and do not take part in any chemical reaction.

Explanation:

Answer:

The correct answer is "[tex]12\times 10^{-6} \ C[/tex]".

Explanation:

Given that,

[tex]Q1=+4.0\times 10^{-6} \ C[/tex]

and,

[tex]Q2=+2.0\times 10^{-5} \ C[/tex]

or,

     [tex]=20\times 10^{-6} \ C[/tex]

then,

The total charge will be:

⇒ [tex]Q =Q1+Q2[/tex]

       [tex]=(+4.0\times 10^{-6}) +(20\times 10^{-6})[/tex]

       [tex]=24.0\times 10^{-6} \ C[/tex]

hence,

After separation, the charge on each sphere will be:

⇒ [tex]q=\frac{Q}{2}[/tex]

       [tex]=\frac{24.0\times 10^{-6}}{2}[/tex]

       [tex]=12\times 10^{-6} \ C[/tex]

Answer:

The enemy can use his vision across a broadband of the electromagnetic spectrum . Our century has seen the entire electromagnetic spectrum opened for business.

Explanation:

Answer:

The potential difference, ΔV, between two points in the electric field can be described as the potential energy transferred per unit charge, ΔU/q₀ , between the two points

ΔV = ΔU/q₀

Explanation:

The force, F, acting on a test charge, q₀, placed in an electric field E is given as follows;

F = q₀·E

The work the electric field does on the charge, W =dU =  F·ds = q₀·E''·dS

[tex]\Delta U = q_0 \times \int\limits^B_A {E \cdot } \, ds[/tex]

The electric potential difference, ΔV, between two points in the electric which is the change in the energy of the system when a test charge is moved between points in the field is goven as follows;

[tex]\Delta V = \dfrac{\Delta U}{q_0} = -\int\limits^B_A {E \cdot } \, ds[/tex]

Therefore, given that, we have;

[tex]\Delta V = \dfrac{\Delta U}{q_0} = \dfrac{-q_o \times \int\limits^B_A {E \cdot } \, ds}{q_0} = \dfrac{F \cdot ds}{q_0} = \dfrac{W}{q_0}[/tex]

Therefore, the potential energy transferred per unit charge, ΔU/q₀ can be described as the potential difference between two points in the electric field, and vice versa.

A force(F), acting on a charged particle, [tex]q_0[/tex], placed in an electric field E is given by the following:

[tex]\to F = q_0 \times E[/tex]

         [tex]\to W =dU = F\times ds = q_0 \times E''\times dS\\\\ \to \Delta U= q_0 \times \int^{B}_{A} \ E \cdot ds\\\\[/tex]

            [tex]\to \Delta V =\frac{\Delta U}{q_0} =-\int^{B}_{A} E \cdot ds\\\\[/tex]

     [tex]\to \Delta V =\frac{\Delta U}{q_0} = \frac{-q_0 \times \int^{B}_{A} E \cdot ds}{q_0} =\frac{F \cdot ds}{q_0}=\frac{W}{q_0}\\\\[/tex]

So, the final answer is:

             [tex]\to \Delta V=\frac{\Delta U}{q_0}[/tex]

Learn more about the potential difference:

brainly.com/question/12198573

Answer:

27 cm3

Explanation:

Answer:

Parte A

2000 J

Parte B

400 N

Parte C

900 N

Explanation:

Los parámetros dados son;

La fuerza horizontal con la que la persona arrastra los muebles = 400 N

El peso de los muebles = 900 N

La distancia que se mueve el mueble en el piso = 5 m

El tipo de movimiento del mueble = M.R.U. Movimiento de línea uniforme

Por lo tanto;

Parte A

Trabajo realizado = Fuerza × Dirección de movimiento de la fuerza

Por lo tanto;

Trabajo realizado en, W = 400 N × 5 m = 2000 J

Parte B

La fuerza horizontal aplicada para arrastrar el mueble = 400 N = La fuerza de fricción que actúa sobre el mueble

La fuerza de fricción que actúa sobre el mueble = 400 N

Parte C

El peso de los muebles se toma como dado 900 N.

Answer:

The Refractive index of water is 1.3 and the refractive index of glass is 1.5.

Answer:

The average speed can be calculated as the quotient between the distance travelled and the time needed to travel that distance.

To go to the school, he travels 2.4 km in 0.6 hours, then here the average speed is:

s = (2.4km)/(0.6 hours) = 4 km/h

To return to his home, he travels 2.4km again, this time in only 0.4 hours, then here the average speed is:

s' = (2.4 km)/(0.4 hours) = 6 km/h.

Now, if we want the total average speed (of going and returning) we have that the total distance traveled is two times the distance between his home and school, and the total time is 0.6 hours plus 0.4 hours, then the average speed is:

S = (2*2.4 km)/(0.6 hours + 0.4 hours)

S = (4.8km)/(1 h) = 4.8 km/h

Answer:

692 g

Explanation:

La fórmula para encontrar la solución de una mezcla química es agregar el soluto y el solvente juntos. Esto significa

Solución = solvente + soluto

Solución = 670 g + 22 g

Solución = 692 g

es así de simple, y espero que lo entiendas

Answer:

hello! your answer is fifty billion M