A 15.8 kg child on a 1.85 m long swing is pulled back to a 37.80 angle. How much PE does she have?

Answers

Answer 1

Answer: 60.16J

Explanation:

The following information can be gotten from the question:

Mass, m = 15.8kg

Length, l = 1.85m

θ = 37.8°

g = 9.8m/s

Potential energy = mgh

= mgh(1 - cos θ)

= 15.8 × 9.8 × 1.85 × (1 - cos 37.8°)

= 286.454 × (1 - 0.79)

= 286.454 × 0.21

= 60.16J

Therefore, the potential energy is 60.16J.


Related Questions

Choose the correct statement regarding the sign conventions for lenses.
a. The focal length f is positive for diverging lenses.
b. Virtual images appear on same side of the lens as the object and have a negative value for the image distance.
c. Real images appear on the opposite side of the lens from the object and have a negative value for the image distance.
d. The focal length f is negative for converging lenses.
e. Virtual images appear on same side of the lens as the object and have a positive value for the image distance.

Answers

Answer:

a) false

b) True

c) True

d) False

e) False

Explanation:

a) False

For a diverging lens, the focal length is negative while it is positive for a converging lens

b) True

Image distances  for virtual images are always negative and it also forms on the the same side of the lens as the object and is enlarged

c) True

d) False

For a diverging lens, the focal length is negative while it is positive for a converging lens

e) False

Image distances  for virtual images are always negative and it also forms on the the same side of the lens as the object and is enlarged

Infrared radiation from young stars can pass through the heavy dust clouds surrounding them, allowing astronomers here on Earth to study the earliest stages of star formation, before a star begins to emit visible light. Suppose an infrared telescope is tuned to detect infrared radiation with a frequency of 1.61THz. Calculate the wavelength of the infrared radiation. Round your answer to 3 significant digits.

Answers

Answer:

λ = 1.86 x 10⁻⁴ m = 186 μm

Explanation:

The relationship between the wavelength and the frequency of a wave is given by the following equation:

[tex]c = f\lambda\\\\\lambda = \frac{c}{f}[/tex]

where,

λ = wavelength of infrared radiation = ?

c = speed of infrared radiation = speed of light = 3 x 10⁸ m/s

f = frequency of infrared radiation = 1.61 THz = 1.61 x 10¹² Hz

Therefore,

[tex]\lambda = \frac{3\ x\ 10^8\ m/s}{1.61\ x\ 10^{12}\ Hz}[/tex]

λ = 1.86 x 10⁻⁴ m = 186 μm

Object X of mass 4 kg travels with a speed of 3 ms toward object Y of mass 2 kg that is initially at rest. Object X then collides with and sticks to object Y . After the collision, object X and object Y remain stuck together. How much mechanical energy is converted into nonmechanical energy during the collision?

Answers

The nonmechanical energy or the loss of energy after the collision will be equal to  [tex]E=6\ J[/tex]

What is the conservation of momentum?

The conservation of the momentum is defined as when two bodies collide with each other then the total energy of the masses will remain constant.

It is given in the question that

Mass of the body X is  [tex]M_X=4\ kg[/tex]

The velocity of the body X is  =[tex]V_x=3 \ \frac{m}{s}[/tex]

Mass of the body Y is   [tex]M_Y= 2\ kg[/tex]

The velocity of body Y is [tex]V_y= 0[/tex]

Now to find out the energy converted after the collision we will first find the final velocity of both the bodies.

Now from the conservation of the momentum

[tex]M_X V_X +M_YV_Y=(M_X+M_Y)V_F[/tex]

[tex](4\times 3)+(2\times0)=(4+2)\times V_F[/tex]

[tex]V_F= \dfrac{12}{6}[/tex]

[tex]V_F = 2 \frac{m}{s}[/tex]

Now to find the Change in the energy of the body

[tex]\Delta E=E_i-E_f[/tex]

[tex]\Delta E=\dfrac{1}{2} M_XV_X^2+\dfrac{1}{2} M_YV_Y^2-\dfrac{1}{2} (M_X+M_Y)V_F^2[/tex]

[tex]\Delta E=\dfrac{1}{2} (4)(3^2)+\dfrac{1}{2} (2)(0^2)-\dfrac{1}{2} ( 4+2) 2^2[/tex]

[tex]\Delta E= 6\ J[/tex]

Thus the nonmechanical energy or the loss of energy after the collision will be equal to  [tex]E=6\ J[/tex]

To know more about the collision follow

https://brainly.com/question/7694106

A child holds one end of a 33.0-meter long rope in her hand and moves it up-and-down to produce a sinusoidal wave by moving her hand from 8.00 cm above her shoulder to 8.00 cm below her shoulder at a frequency of 2.00 Hz and a wavelength of 75.0 cm. If the child doubles the amplitude of her hand's motion on that same rope with the same tension in the rope, then what will the wavelength of the wave now be

Answers

Answer:

Wavelength=75 cm.

The wavelength well remain unchanged which is 75 cm.

Explanation:

The formula which will help us to answer the question is:

V=f*λ

Where:

V is the velocity

f is the frequency of wave

λ is the wave length

Now:

λ=V/f    Eq (1)

The equation show's that wavelength is independent of the amplitude but it depends on the frequency and the velocity with which wave is moving.

The wavelength well remain unchanged which is 75 cm.

A compact fluorescent bulb is 17.0% efficient. How much energy input would be required for the bulb to produce 252 J of light energy?
What time of energy is the waste output and how much would be created?

Help

Answers

Answer:

1482.35J

Explanation:

Efficency=(output energy/input energy) x100

17.0 =(252/input energy) x100

input energy =100x252/17=1482.35J

wasted energy=1482.35-252=1230.35J

Light incident on a glass sheet is partly reflected and partly refracted. How is the reflected ray different from the refracted ray?
A.
The refracted ray is unpolarized whereas the reflected ray is horizontally polarized.
B.
The refracted ray is unpolarized whereas the reflected ray is vertically polarized.
C.
The refracted ray is horizontally polarized whereas the reflected ray is unpolarized.
D.
The refracted ray is vertically polarized whereas the reflected ray is unpolarized.
E.
The refracted ray is vertically polarized whereas the reflected ray is horizontally polarized.

Answers

Answer:

E. The refracted ray is vertically polarized whereas the reflected ray is horizontally polarized.

Explanation:

#PLATOLIVESMATTER

If a wave has a frequency of 6 waves per second and a wavelength of 10 m, what is the wave's speed?

0.6 m/sec
1.6 m/sec.
60 m/sec.
none of the above
helpp me plzzz​

Answers

0.6 is the answer
Hope this helped

Drag each tile to the correct box.
Adam takes a bus on a school field trip. The bus route is split into the five legs listed in the table. Find the average velocity for each leg of the trip. Then arrange the legs of the trip from highest velocity to lowest.

Leg Distance (km) Time (min)
A 18 9
B 25 15
C 24 8
D 48 12
E 15 7

Answers

Answer:

E

A

C

B

D

Explanation:

Which of the following types of electromagnetic radiation has waves with the highest frequency ? A. Infrared radiation B. Visible light c. Microwaves D. X-rays

Answers

X-rays I think I’m not sure

A uniform wooden plank with a mass of 75kg and length of 5m is placed on top of a brick wall so that 1.5m of plank extends beyond the edge hanging freely in air. how far beyond the edge of the wall can a 100kg woman walk before the plank began to rotate about the edge of the wall​

Answers

Answer:

x₂ = 1.33 m

Explanation:

For this exercise we must use the rotational equilibrium condition, where the counterclockwise rotations are positive and the zero of the reference system is placed at the turning point on the wall

            Στ = 0

            W₁ x₁ - W₂ x₂ = 0

where W₁ is the weight of the woman, W₂ the weight of the table.

Let's find the distances.

Since the table is homogeneous, its center of mass coincides with its geometric center, measured at zero.

           x₁ = 2.5 -1.5 = 1 m

The distance of the person is x₂ measured from the turning point, at the point where the board begins to turn the girl must be on the left side so her torque must be negative

            x₂ = [tex]\frac{M_1g }{m_2 g} \ x_1[/tex]

           

let's calculate

           x₂ = [tex]\frac{100}{75} \ 1[/tex]

           x₂ = 1.33 m

PLEASE HELP! I'LL GIVE BRAINLEST​

Answers

Answer:

a - is the amount of matter in this object

Which of the following should a warm up NOT include?
Select one:
A. A few minutes of cardiovascular exercise
B. A light version of the exercise you will be performing
C. Intense stretching
D. All of the above should be included in a warm up

Answers

the answer to this is ax

A cell has an emf of 1.5 V and an internal resistance of 0.65 Q.
The cell is connected to a resistor R.
[0[8].[4] State what is meant by an emf of 1.5 V.
[2 marks]
I
[0] 8]-[2] The current in the circuit is 0.31 A.
Show that the total power output of the cell is approximately 0.47 W.
[1 mark]
[o[s).[3] Calcutate the energy dissipated per second in resistor R.
[2 marks]
energy dissipated per second = Ist
[o[si.[4] The cell stores 14 kJ of energy when it is fully charged. The cell's emf and internal resistance are constant as the cell f discharged.
Calculate the maximum time during which the fully-charged cell can deliver energy to
resistor R.
[2 marks)
maximum time = 5

Answers

1. A cell has an emf of 1.5 V means  a battery with an Emf rating of 1.5v can supply a maximum of 1.5v of electrical energy in an open circuit. Once it is connected to a closed circuit, it will have a potential difference of 1.5v(considering it has negligible resistance).

2.     Voltage(V) in the circuit is 1.5 V and The current (I) in the circuit is 0.31 A.

So we have to find out power (p) in the circuit.

So  P = VI

       P= 1.5(0.31)

       P = 0.465

        P= 0.47 W

the total power output of the cell is approximately 0.47 W.

3.   We have to obtain  the energy dissipated per second in resistor R.

P = 0.465 - I²R

P = 0.465 - 0.31²(0.65)

P  = 0.402535 J/s

P =  0.40 J

Total 0.40 Joule per second energy has been dissipated from the resistor R.

4. The cell stores 14 kJ of energy when it is fully charged. The cell's emf and internal resistance are constant as the cell f discharged.

The energy dissipated per second(e) in resistor R is .40

Cell have total (E) 14 kJ (14000 J) of energy.

We have to calculate the maximum time (t) during which the fully-charged cell can deliver energy to resistor R.

[tex]\(E=\into{{e}_}}{t}\\\)[/tex]

14000 = 0.40 × t

t =14000  / 0.40  

t =  35 000 s or about 9.75 hrs.

Fully-charged cell can deliver energy to resistor R up to 9.75 hrs.

What is Electromotive Force?

Electromotive force, abbreviation E or emf, energy per unit electric charge that is imparted by an energy source, such as an electric generator or a battery. Energy is converted from one form to another in the generator or battery as the device does work on the electric charge being transferred within itself.

Learn more about Electromotive force:

https://brainly.com/question/820393

Two vectors have magnitudes 3 and 4 . how are the directions of the two vectors related if: a/the sum has magnitude 7.0 ​

Answers

Same directions
Perpendicular
Opposite directions

One way to probe the nucleus is to bombard a sample with high-energy electrons. To learn about the nuclear structures in a sample, the de Broglie wavelengths of these electrons would need to be a little smaller than a nuclear radius. Estimate the energy of such electrons. Give your answer in electron-volts. (Assume that the wavelength used is about 9.0 fm.) eV

Answers

Answer:

E = 1.38 x 10⁸ eV = 138 MeV

Explanation:

The energy associated with the given wavelength can be found from the following formula:

[tex]E = \frac{hc}{\lambda}[/tex]

where,

E = Energy of electron = ?

h = Plank's Constant = 6.625 x 10⁻³⁴ J.s

c = Speed of Light = 3 x 10⁸ m/s

λ = wavelength = 9 fm = 9 x 10⁻¹⁵ m

Therefore,

[tex]E = \frac{(6.625\ x\ 10^{-34}\ J.s)(3\ x\ 10^8\ m/s)}{9\ x\ 10^{-15}\ m}\\\\E = (2.21\ x\ 10^{-11}\ J)(\frac{1\ eV}{1.6\ x\ 10^{-19}\ J})[/tex]

E = 1.38 x 10⁸ eV = 138 MeV

Two window washers, Bob and Joe, are on a 3.00 m long, 395 N scaffold supported by two cables attached to its ends. Bob weighs 805 N and stands 1.00 m from the left end. Two meters from the left end is the 500 N washing equipment. Joe is 0.500 m from the right end and weighs 820 N. Given that the scaffold is in rotational and translational equilibrium, what are the forces on each cable

Answers

Answer:

- the forces on the left hand side is 1.038 kN

- the forces on the right hand side is 1.483 kN

Explanation:

Given the data in the question, as illustrated in the image below;

Length of the scaffold = 3 m

weight of the scaffold = 395 N

Weight of Bob = 805 N and stands 1 m from the left end

weight of washing equipment = 500N and on sits 2 m from the left end

Weight of Joe = 820 N and stand 0.500 m from the right end

so the force on the left cable will be;

[tex]T_{left[/tex] = [tex]\frac{1}{3m}[/tex][ (805 N)( (3-1) m) + ( 395 N )( [tex]\frac{3}{2} m[/tex]) + ( 500 N )(1m ) + ( 820 N)( 0.500m ) ]

[tex]T_{left[/tex] =  [tex]\frac{1}{3m}[/tex][ 1610 + 592.5 + 500 + 410 ]

[tex]T_{left[/tex] =  [tex]\frac{1}{3m}[/tex][ 3112.5 ]

[tex]T_{left[/tex] =  1037.5 N

[tex]T_{left[/tex] =  1.038 kN

Therefore, the forces on the left hand side is 1.038 kN

On the right hand side;

[tex]T_{Right[/tex] =  ( 805 N + 395 N + 500 N + 820 N ) - 1037.5 N

[tex]T_{Right[/tex] =  2520 N - 1037.5 N

[tex]T_{Right[/tex] =  1482.5 N

[tex]T_{Right[/tex] =  1.483 kN

Therefore, the forces on the right hand side is 1.483 kN

A sound wave has a wavelength of 2M and a frequency of 100 Hz. The speed of the wave is

Answers

Answer:

200 meters per second

Explanation:

wave speed = wavelength x frequency

2 meters x 100 hertz = 200 meters per second

A 10 kg migratory swan cruises at 20m/s. A calculation that takes into ac-count the necessary forces shows that this motion requires 200W of mechanical power. If we assume an efficiency similar to humans (say, 25%), a reasonableassumption, then the metabolic power of the swan is significantly higher thanthis. The swan does not stop to eat during a long day of flying; it get theenergy it needs from fat stores. Assuming an efficiency similar to humans, after12 hours of flight.

Required:
a. How far has the swan traveled?
b. How much metabolic energy has it used?
c. What fraction of its body mass does it lose?

Answers

Answer:

Part A:

Distance=864000 m=864 km

Part B:

Energy Used=ΔE=8638000 Joules

Part C:

[tex]\frac{\triangle m}{m}=0.004998=0.49985\%[/tex]

Explanation:

Given Data:

v=20m/s

Time =t=12 hours

In Secs:

Time=12*60*60=43200 secs

Solution:

Part A:

Distance = Speed**Time

Distance=v*t

Distance= 20*43200

Distance=864000 m=864 km

Part B:

Energy Used=ΔE= Energy Required-Kinetic Energy of swans

Energy Required to move= Power Required*time

Energy Required to move=200*43200=8640000 Joules

Kinetic Energy=[tex]\frac{1}{2}mv^2[/tex]

[tex]K.E\ of\ Swans=\frac{1}{2} *10*(20)^2=2000\ Joules[/tex]

Energy Used=ΔE=8640000 -2000

Energy Used=ΔE=8638000 Joules

Part C:

Fraction of Mass used=Δm/m

For This first calculate fraction of energy used:

Fraction of energy=ΔE/Energy required to move

ΔE is calculated in part B

Fraction of energy=8638000/8640000

Fraction of energy=0.99977

Kinetic Energy=[tex]\frac{1}{2}mv^2[/tex]

Now, the relation between energies ratio and masses is:

[tex]\frac{\triangle E}{E}=\frac{\triangle m}{2m}v^2[/tex]

[tex]\frac{\triangle m}{m}=\frac{2}{v^2} *\frac{\triangle E}{E}\\\frac{\triangle m}{m}=\frac{2}{20^2} *0.99977[/tex]

[tex]\frac{\triangle m}{m}=0.004998=0.49985\%[/tex]

Is the mass of an object measured with scale, yes or no​

Answers

Answer:

No.

Explanation:

The scale actually measures the force that the object does against it, and that force is called the weight.

Such that if we have an object with mass M and we are on Earth, where the gravitational acceleration is g, the weight is:

W = M*g

Now, there is a unit called "kilogram-force"

Such that on Earth, an object that has a mass of 10 kilograms, weighs 10 kilograms-force.

Then from the weight measure, we can instantly know the mass of the object, but the thing that is being measured is the weight, not the mass.

Which statement is FALSE? *
explosives that deflagrate contain explosive materials that react (burn) slower than the speed of sound
an example of a deflagration explosive is C4
some deflagration explosives have shock waves that move faster than the speed of sound
explosives that deflagrate are also called low explosives

Answers

Answer:

Some deflagration explosives have shock waves faster than the speed of sound.

Explanation:

A  example  of a deflagration explosives.

Answer:

an example of a deflagration explosive is C4, is false.

Explanation:

Explosive materials may be categorized by the speed at which they expand. Materials that detonate (the front of the chemical reaction moves faster through the material than the speed of sound) are said to be "high explosives" and materials that deflagrate are said to be "low explosives".

C4 meaning:

C-4 or Composition C-4 is a common variety of the plastic explosive family known as Composition C, which uses RDX as its explosive agent. C-4 is composed of explosives, plastic binder, plasticizer to make it malleable, and usually a marker or odorizing taggant chemical.

One method for determining the amount of corn in early Native American diets is the stable isotope ratio analysis (SIRA) technique. As corn photosynthesizes, it concentrates the isotope carbon-13, whereas most other plants concentrate carbon-12. Overreliance on corn consumption can then be correlated with certain diseases, because corn lacks the essential amino acid lysine. Archaeologists use a mass spectrometer to separate the 12 C and 13 C isotopes in samples of human remains. Suppose you use a velocity selector to obtain singly ionized (missing one electron) atoms of speed 8.50 km/s, and you want to bend them within a uniform magnetic field in a semicircle of diameter 25.0 cm for the 12 C. The measured masses of these isotopes are 1.99×10−26kg(12C) and 2.16×10−26kg(13C).
(a) What strength of magnetic field is required?
(b) What is the diameter of the 13 C semicircle?
(c) What is the separation of the 12 C and 13 C ions at the detector at the end of the semicircle? Is this distance large enough to be easily observed?

Answers

Answer:

[tex]0.0084575\ \text{T}[/tex]

[tex]0.272\ \text{m}[/tex]

2.2 cm easily observable

Explanation:

[tex]m_1[/tex] = Mass of 12 C = [tex]1.99\times 10^{-26}\ \text{kg}[/tex]

[tex]m_2[/tex] = Mass of 13 C = [tex]2.16\times 10^{-26}\ \text{kg}[/tex]

[tex]r_1[/tex] = Radius of 12 C = [tex]\dfrac{25}{2}=12.5\ \text{cm}[/tex]

B = Magnetic field

v = Velocity of atom = 8.5 km/s

[tex]r_2[/tex] = Radius of 13 C

The force balance of the system is

[tex]qvB=\dfrac{m_1v^2}{r}\\\Rightarrow B=\dfrac{m_1v}{rq}\\\Rightarrow B=\dfrac{1.99\times 10^{-26}\times 8500}{12.5\times 10^{-2}\times 1.6\times 10^{-19}}\\\Rightarrow B=0.0084575\ \text{T}[/tex]

The required magnetic field is [tex]0.0084575\ \text{T}[/tex]

Radius is given by

[tex]r=\dfrac{mv}{qB}[/tex]

[tex]r\propto m[/tex]

So

[tex]\dfrac{r_2}{r_1}=\dfrac{m_2}{m_1}\\\Rightarrow r_2=\dfrac{m_2}{m_1}r_1\\\Rightarrow r_2=\dfrac{2.16\times 10^{-26}}{1.99\times 10^{-26}}\times 12.5\times 10^{-2}\\\Rightarrow r_2=0.136\ \text{m}[/tex]

The required diameter is [tex]2\times 0.136=0.272\ \text{m}[/tex]

Separation is given by

[tex]2(r_2-r_1)=2(0.136-0.125)=0.022\ \text{m}[/tex]

The distance of separation is 2.2 cm which is easily observable.

A football is thrown down off of a building with a force of 70
Newtons. Gravity is pulling down the football with a force of
19 Newtons. What is the net force on the football?

Answers

Answer:

89 N downward.

Explanation:

Both forces are working in the same direction -- down.

Therefore you can add them together.

F = F1 + F2

F is the total force

F1 is the gravitational force

F2 is the force the person provides

F1 = 19

F2 = 70

F = ?

F = 19 + 70

F = 89 Newtons downward.

Answer:

wE dONt taLk aBt brunooooOoooOoOo ;')

Explanation:

You perform a double‑slit experiment in order to measure the wavelength of the new laser that you received for your birthday. You set your slit spacing at 1.09 mm and place your screen 8.61 m from the slits. Then, you illuminate the slits with your new toy and find on the screen that the tenth bright fringe is 4.53 cm away from the central bright fringe (counted as the zeroth bright fringe). What is your laser's wavelength ???? expressed in nanometers?

Answers

Answer:

λ = 5.734 x 10⁻⁷ m = 573.4 nm

Explanation:

The formula of the Young's Double Slit experiment is given as follows:

[tex]\Delta x = \frac{\lambda L}{d}\\\\\lambda = \frac{\Delta x d}{L}[/tex]

where,

λ = wavelength = ?

L = distance between screen and slits = 8.61 m

d = slit spacing = 1.09 mm = 0.00109 m

Δx = distance between consecutive bright fringes = [tex]\frac{4.53\ cm}{10}[/tex] = 0.00453 m

Therefore,

[tex]\lambda = \frac{(0.00453\ m)(0.00109\ m)}{8.61\ m}[/tex]

λ = 5.734 x 10⁻⁷ m = 573.4 nm

The activity of a radioisotope is found to decrease 40% of its original value in 2.59 x 10 s.

Calculate the decay constant of the radioisotope.​

Answers

Answer: [tex]0.0353\ s^{-1}[/tex]

Explanation:

Given

Radioactive material is found to decrease 40% of its original value in [tex]2.59\times 10\ s[/tex]

Sample at any time is given by

[tex]N=N_oe^{-\lambda t}[/tex]

where, [tex]\lambda=\text{decay constant}[/tex]

Put values

[tex]\Rightarrow 0.4N_o=N_oe^{-\lambda\cdot 2.59\times 10}\\\Rightarrow 0.4=e^{-\lambda\cdot 2.59\times 10[/tex]

Taking natural logarithm both side

[tex]\Rightarrow \lambda=\dfrac{\ln 2.5}{25.9}\\\\\Rightarrow \lambda =0.0353\ s^{-1}[/tex]

Conservation equations are powerful equations, because of how versatile and flexible they are to different physical situations. Conservation of mass is a simple one that can even be applied to fluids with care. The conservation of momentum also applies to any closed system, such as collisions. We've examined the nuances of energy conservation in our labs with total mechanical energy. Does kinetic energy remain conserved in all collisions too?
a) true
b) false

Answers

Answer:

b) false

Explanation:

Since in the given situation it is mentioned that the mass conversation would be simple and same applied to the fluids with care also the conservation of momentum would be applied to any type of closed system like collisions

But as we know that

In the inelastic collisions, the total kinetic energy would not be remain conserved

So the given statement is false

What is the frequency of a wave traveling at 300,000,000 m/s with a wavelength of .0025 m/cycle? Please help me !!

Answers

Answer:

its 00.0035474

Explanation:

..... .. . . .. . . . . .. .

Two carts, cart AA (mass 4.00 kgkg) and cart BB (mass 6.50 kgkg) move on a frictionless, horizontal track. Initially, cart BB is at rest and cart AA is moving toward it at 4.00 m/sm/s. The carts are equipped with ideal spring bumpers, meaning they conserve energy. The collision is head-on, so all motion before and after the collision is along a straight line. Let x x be the direction of the initial motion of cart AA.

Answers

Answer:

[tex]V{_a}'=-0.95m/s[/tex]

Explanation:

From the question we are told that:

Mass of cart A [tex]m_a=4kg[/tex]

Mass of cart B [tex]m_a=6.50kg[/tex]

Speed of cart AA [tex]V-{a}=4.00[/tex]

Generally the equation for velocity of  A after collision [tex]V{_a}'[/tex] is mathematically given by

[tex]V_{a}'=\frac{M_a-M_b}{M_a+M+b} V_a[/tex]

[tex]V{_a}'=\frac{4-6.5}{4+M6.5} *4[/tex]

[tex]V{_a}'=\frac{4-6.5}{4+M6.5} *4[/tex]

[tex]V{_a}'=-0.95m/s[/tex]

Help me please please help me

Answers

Answers:

1. B. Circuit
2. D. Electrons moving around
3. B. Series and parallel
4. C. Parallel
5. C. Series
6. A. One
7. C. If one goes down, they both go down.

Hope this helped!

What would the current be for a circuit that has a voltage of 0.8 V and a resistance of 0.01 Q?
0 1 = 0.01 A
0 1 = 0.8 A
0 1 = 80 A
O I = 0.08 A

Answers

Answer:

80 A

Explanation:

Hi there!

Ohm's law states that [tex]V=IR[/tex] where V is the voltage, I is the current and R is the resistance.

Plug the given information into Ohm's law (V=0.8, R=0.01) and solve for I

[tex]V=IR\\0.8=I(0.01)[/tex]

Divide both sides by  0.01 to isolate I

[tex]0.8=I(0.01)\\\frac{0.8}{0.01}= \frac{I(0.01)}{0.01} \\80=I[/tex]

Therefore, the current for this circuit would be 80 A.

I hope this helps!

Which of these properties of light is a constant?
speed in a vacuum
amplitude
wavelength
frequency

Answers

Answer:

speed in vacuum

Explanation:

lets say we are in an empty universe and you are moving 10% the speed of light you wont slow down or speed up.

Other Questions
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