Electric current flows through paths called circuits. People often build circuits using wires, resistors, and batteries. A battery is a voltage source.

A circuit with which components has the highest current with the given voltages?

wires, a 9V battery, no resistors
wires, a 9V battery, a light bulb
wires, a 1.5V battery, no resistors
wires, a 1.5V battery, a light bulb

Answer:

A) speed up

is the correct option

Answer:

slows down

Explanation:

As the temperature difference decreases the rate of transfer slows (hope this helps)

Answer:

both statements are truth

Explanation:

a-The Joule effect, also called Joule's law, is the thermal manifestation of electrical resistance. ... In all these cases, it is intended to generate thermal energy with electricity passing through its conductors. This heat they give off is due to the Joule effect.

b-sure of a liquid tank depends only on the density of the liquid and depth from the free surface. It is a scalar quantity and is same in all directions, at a point.

Answer:

---

Explanation:

Force is like the amount of push

Motion is the result of Push

1g=1000kg

120*1000

=120000kg

120000kg*10N/kg

=1200000N

60km/hr..

I think so....

60 km/s

60 kilometers / 60 minutes

= 1 kilometer / minute

as we know to convert kilometer / min we should multiply 60 to speed value

therefore, (1×60/ 1) km/hr=60 km/ hr

if you want to know why 60 multiplied with it then read this

1 km/min to km/hr

1 minute = 1/60 hour

so, for converting minute to hour we multiply 1/60

when it goes to top then it multiplied

I know it's little complicated let see it by equation

1 km/min = (1 / 1×1/60) km/h

=(1 / 1/60) km/hr

= 60 km/hr

( note there is no change in km so it remains without multiplied)

Answer:

water

is missing in above equation

hope it helps

The work done  is the product of the force and resulted displacement. The frictional force between the box and floor is 119.5 N.

Force is external factor acting on a body to make a change in the state of an object . According to Newton's second law of motion, force is the product of mass and acceleration.

The work done in physics is the product of force acting on a body and its displacement. Therefore, the force which result in a displacement of the body is said to be work done on the object.

Here, the work done by frictional force is 550 J and displacement is 4.6 m.

Therefore, the force = work done / displacement

                                  = 550 J/ 4.6 m

                                  = 119.5 N.

Hence, the force between the floor and box will be 119.5 N.

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Answer:

-4 m/s^2

Explanation:

v=vo+at

0=40+a(10)

-40=a(10)

-4=a

Answer:

324 units

Explanation:

Given that,

Objects 1 and 2 attract each other with a gravitational force of 36.0 units.

The distance separating Objects 1 and 2 is changed to one-third the original value.

Let the new force be F' and r'=r/3. so,

[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]

[tex]F'=\dfrac{kq_1q_2}{r'^2}\\\\F'=\dfrac{kq_1q_2}{(\dfrac{r}{3})^2}\\\\=9\times \dfrac{kq_1q_2}{r^2}\\\\=9F\\\\=9\times 36\\\\=324\ \text{units}[/tex]

So, the new force become 324 units.

Answer:

for question 5 its

Explanation:

Through Brahe's astronomical measurements and Kepler's own drawings of the geometrical relationship between the Sun and Mars in various parts of the planet's orbit, Kepler discovered that planets moved faster when they were closer to the Sun.

Answer:

Aluminum has the highest atomic number

Answer: Frequency of 1 ÷ 2 = 0.5 Hz.

Answer:

The answer is D

Answer:

A) Armstrong is not a unit of pressure. In fact, I don't think it's even a unit at all, an "Amstrong" is a unit of length, if that's what you meant.

Atmospheres, Millimeters of mercury, and Pascals are all units of pressure.

Let me know if this helps!

Answer:

They are gaining energy, can move and slide past each other.

Explanation:

Because as ice melts, the molocules gain energy/heat which warm them up and are able to slide/move apart from each other.

Explanation:

ans ...(5,3)..............

Answer:

x = 5

y = 3

Explanation:

x + y = 8 and 3x + 2y = 21

Here We use Substitution Method

x + y = 8 ...(1)

3x + 2y = 21 ...(2)

From equation (1) we get

x + y = 8

x = 8 - y

Now the value of x = 8 - y in equation (2)

3(8 - y) + 2y = 21

24 - 3y + 2y = 21

- y = 21 - 24

y = 3

Then Put the value of y in equation (1)

x + (3) = 8

x + 3 = 8

x = 8 - 3

x = 5

Thus The value of x is 5 and y is 3

x + y = 8

5 + 3 = 8

8 = 8

3x + 2y = 21

3(5) + 2(3) = 21

15 + 6 = 21

21 = 21

L.H.S = R.H.S

-TheUnknownScientist

Answer:

x) KE and GPE

y) Only GPE

z) Only KE

Explanation:

From the diagram, we have;

1) At point X, the gall is at an elevation higher than the thrower, therefore, the ) ball has (gravitational) potential energy, GPE, because it can fall  to a lower level unassisted from the height it was thrown

And the ball is also in upward motion, with which it reaches the height 'Y', therefore, the ball has kinetic energy, KE, to move higher

2) At point 'Y' which is the maximum height, the ball no longer moves upwards and momentarily, the ball has no vertical motion, therefore, the ball has only energy due to height, which is the gravitational potential energy, GPE

3) At the point Z, at the instant just before the ball touches the ground, the elevation of the ball above the ground is small, while the velocity of the ball is close to maximum velocity, therefore, the ball has Only kinetic energy, KE

Answer:

Besides sound and radio waves, the Doppler effect also affects the light emitted by other bodies in space. If a body in space is "blue shifted," its light waves are compacted and it is coming towards us. If it is "red shifted" the light waves are spread apart, and it is traveling away from us.

Explanation:

Answer:

Work = 165670.4 J = 165.67 KJ

Explanation:

First, we will find the deceleration of the car, using the 3rd equation of motion:

[tex]2as = v_{f}^2 - v_{i}^2\\[/tex]

where,

a = deceleration = ?

s = skid distance = 40 m

vf = final speed = 0 m/s

vi = initial speed = 17.2 m/s

Therefore,

[tex]2a(40\ m) = (0\ m/s)^2 - (17.2\ m/s)^2\\a = - 3.698\ m/s^2[/tex]

the negative sign indicates deceleration here.

Now, we will calculate the braking force applied by the brakes on the car:

[tex]F = ma\\F = (1120\ kg)(-3.698\ m/s^2)\\F = - 4141.76\ N[/tex]

the negative sign indicates braking force.

Now, we will calculate the work done using the magnitude of this force:

[tex]Work = |F|s\\Work = (4141.76\ N)(40\ m)\\[/tex]

Work = 165670.4 J = 165.67 KJ

[tex]\huge\mathfrak\green{answer}[/tex]

As per as my knowledge

The speed of a wave in a medium is affected by density, wavelength and temperature :)

(Good luck on your test and mark me brainliest if this helps)

Complete Question:

On a circular race track with a radius of 3.23 km, a certain road car set a speed record of 372 km/h. What was the car's centripetal acceleration?

Answer:

Centripetal acceleration = 3.306 m/s²

Explanation:

Given the following data;

Radius, r = 3.23 km to meters = 3.23 * 1000 = 3230 m

Velocity = 372 km/h to meters per seconds = 372*1000/3600 = 103.33 m/s

To find the centripetal acceleration;

Centripetal acceleration = velocity²/radius

Centripetal acceleration = 103.33²/3230

Centripetal acceleration = 10677.09/3230

Centripetal acceleration = 3.306 m/s²

Answer: concentration c = 25.2 g /(41.99 g/mol × 0.75 l)

Explanation: M(NaF) = 41.99 g/mol and amount of substance n = m/M.

Concentration c = n/V

What is the molarity (concentration) of 25.2 grams of NaF dissolved in a total volume of 0.75 liters is 0.8 mol/liter.

What is Molarity ?

Molarity shows the concentration of solute in the given solution. It is defined as no. of moles of solute present in 1 liter of solution. It is denoted by M. its SI unit is mol/L.

Hence, molarity is given by,

Molarity = No. of moles of solute ÷ Volume of the solution in liters

Given,

mass of NaF = 25.2 g

Volume of the solution = 0.75 liters

Molarity = ?

Let's find No. of moles of the solute.

NaF has one Na and one F.

Molar mass of NaF is,

Na = 22.98*1 = 22.98

F = 18.99*1 = 18.99

Molar mass of NaF is 22.98+18.99= 41.97 g/mol

No. of moles of the solute is,

25.2g of NaF × (1÷41.97 ) mol/g = 0.6 mol.

Molarity of NaF is,

Molarity = No. of moles of solute ÷ Volume of the solution in liters

M = 0.6 mol ÷ 0.75 liters

M = 0.8 mol/liter

Hence molarity of NaF is 0.8 mol/liter.

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Force

Explanation:

so force is your answer see why b/c

Answer:

all the body parts work together to make your body function properly, so therefore, a lot of other body parts will break down

Answer:

20 watts

Explanation:

Big brain mode activated:

Power=1200J/60sec

Power=20 watts

Answer:

a. Speed = 765 m/s

b. Wavelength = 0.0153 m

Explanation:

Given the following data;

Distance = 91.8m

Time = 120 milliseconds to seconds = 120/1000 = 0.12 seconds

Frequency = 50KHz = 50 * 10³ = 50000 Hz

a. To find the speed of sound in the ocean:

Speed = distance/time

Speed = 91.8/0.12

Speed = 765 m/s

b. To find the wavelength;

Wavelength = speed/frequency

Wavelength = 765/50000

Wavelength = 0.0153 m

Answer:

velocity=2m/s

I hope it's helps you

Answer:

Its average speed, pretending that it traveled at a constant speed, is

v = s / t

= 600 m

5 x 60 s

= 2 m/s

Hope it help...

Havea great day

Answer:

50 kg

Explanation:

f=ma

Force = mass x acceleration

490 = 9.8 x m

m = 50 kg