An electric motor has an operating resistance of 25 Ω when a 4.8 A current is flowing through it. What is the potential difference of the outlet the motor is plugged into?

Answer:

I think.the frist one

Explanation:

because that only one that make sense to me

A way that a U-235 atom could not fission is 94

235U92 + 0n -1 → 141Te52 + 40Zr+ 0n2 +energy

When the slow moving neutrons are bombarded with the heavy radioactive nuclei, the product is the more number of neutrons are produced with the large amount of energy. This multiplying process is called nuclear fission.

The amount of energy produced in nuclear fission reaction is again used in the next fission process.

The neutron has no charge and has a rest mass. While reacting the U-235 atom with neutron, more number of neutrons are released.

Thus, the correct option is A.

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Answer:

So if its regular, you would always tighten it. Here's the reasoning:

"When you lower the pitch by releasing tension, there might be slack in the gears in the tuning machines, which might make the string go below the intended pitch. By going further down and approaching the target note from below, there will be force applied to the gears and when you've reached the correct pitch the gears have less potential to move. So your teacher is correct."

Answer: So if its regular, you would always tighten it. Here's the reasoning: "When you lower the pitch by releasing tension, there might be slack in the gears in the tuning machines, which might make the string go below the intended pitch.

Explanation:

   "When you lower the pitch by releasing tension, there might be slack in the gears in the tuning machines, which might make the string go below the intended pitch. By going further down and approaching the target note from below, there will be force applied to the gears and when you've reached the correct pitch the gears have less potential to move. So your teacher is correct."

Answer:

the answer is C.

Explanation:

continue to move in a straight line with uniform velocity.

Andrew Haber is an astronaut in space, far away from gravitational and frictional forces. He throws a tennis ball. The ball will continue to move in a straight line with uniform velocity. The correct option is C.

Gravity always pulls things down, whether it's a desk, a book, or a person. As a result, gravity pulls you down to the ground as you jump. But friction doesn't drag things down. But friction doesn't drag things down.

The direction of the push used to move the body is the opposite of the direction of friction. Because of the increased force of friction, sliding a body across a surface becomes more difficult when gravity is strong.

Therefore, the correct option is C) continue to move in a straight line with uniform velocity.

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Answer: find the answer in the explanation

Explanation:

Average velocity is the average value of magnitude of initial velocity and final velocity.

If U = initial velocity and V = final velocity, then average velocity can be expressed as

Average velocity = ( U + V )/2

A vehicle who takes 60 minutes to cover 30 miles north and then 30 miles south and end up at the same place, has an average speed of 60 miles divided by 60 minutes, or 1 mile per minute.

Instantaneous velocity is the distance covered in a specific direction per time taken. Instantaneous velocity can be expressed as

Velocity = displacement/ time.

Uniform velocity occurs when we have a constant velocity. That is, when velocity does not change. When a vehicle travels in equal distances in equal intervals of time.

Answer:

Sewage

Explanation:

It has the greatest percentage out of the pie chart.

Answer:

A

Explanation:

Answer:

Answer  A

Explanation:

 P    =  mv

 P    =  1200  kg  ×  20  m/s

 P    =   2400  kg  m/s

So  the  answer  would  be  A

Answer:

The balloon has more negative charges than positive charges. The tissue paper has a neutral charge.The static electricity pulls on the tissue paper lifting it up.

Answer:

I believe it is answer C.

Explanation:

Answer:

C: atomic mass

Explanation:

Answer:

The correct answer is B) Faraday's Law

B. is the correct answer, ur now 2 grades higher bro

Answer:The vitamins one.

Explanation:

Answer:

d. do vitamins help people stay healthy

Explanation:

flvs

Answer: A spanner with a long handle

Explanation: The use of a spanner for opening the nut of a simple machine will employ the principle of moment.

The force apply to the nut is considered as load while the force applied to the spanner is considered to be effort.

Before the nut can be opened, the effort must overcome the load.

Since moment is the product of a force and the perpendicular distance, the spanner with a long handle will produce a higher moment.

Therefore, a spanner with a long handle will be preferred.

Answer:

It's true that mass doesn't change

but because of difference in gravitational force on earth and moon, the scale used for weighing weight gives different reading. If we use the scale used for measuring the mass then the reading will be same. I think this was confusing you

Answer:

Mass, m = 2650 kg

Explanation:

We have,

Kinetic energy of  Mr. Thomson’s prius is 641300 J

He is moving with a velocity of 22 m/s

It is required to find the mass of Mr. Thomson’s prius.

Kinetic energy,

[tex]K=\dfrac{1}{2}mv^2[/tex]

Plugging all the values, we get :

[tex]m=\dfrac{2K}{v^2}\\\\m=\dfrac{2\times 641300}{(22)^2}\\\\m=2650\ kg[/tex]

So, the mass of Mr. Thomson’s prius is 2650 kg.

Answer:

The following bonds breaks:

Ca–O bonds in calcium oxide and H–Cl bonds in hydrochloric acid

Explanation:

When calcium oxide reacts with hydrochloric acid, water and calcium chloride are formed. The reaction is given as:

CaO + 2HCl ⇒ CaCl₂ + H₂O

Where

CaO has an ionic bond between Ca and O because Ca is a metal and O is a non-metal, which results in complete transfer of electrons from calcium to oxygen.

HCL is usually in a gaseous state which has a covalent bond between H and Cl, but HCL acid means HCL in the presence of water, which will have an ionic bond.

Under the given reation, both of these ionic bonds break to form new ones

Answer:

change in temperature

Explanation:

just like a rock, if it is put in different temperatures, the different substance you get.

//Have A Great Day//

Answer:

Sample Response: If the angle of the track increases, then the acceleration of the cart increases because a greater track angle increases the cart's velocity.

Explanation:

because.

Answer:

Exothermic reaction

Explanation:

Exothermic reaction relases energy while endothermic absorbs energy.

Answer:

eeeeeeeeeee

exothermic

Answer: 50 kgm/s

Explanation:

Given that the

Mass M = 100kg

Velocity V = 0.5 m/s

Momentum can be defined as the product of mass and velocity. That is,

Momentum = MV

Substitute the values of M and V into the formula

Momentum = 100 × 0.5

Momentum = 50 kgm/s

Therefore, the magnitude of momentum is 50 kgm/s

Answer:

50 kg-m/s

Explanation:

Answer: V = 12.0 V

Explanation:

Answer:

Wave frequency can be measured by counting the number of crests or compressions that pass the point in 1 second or other time period. The higher the number is, the greater is the frequency of the wave.

hope this helps u

Answer:

0.2 Hz

Explanation:

Answer:

it is a scientific model if you want to research where in the world is vegetation located.

Answer:

4 m/s²

Explanation:

a = Δv / Δt

a = (20 m/s − 0 m/s) / (5 s − 0 s)

a = 4 m/s²

Acceleration of a moving body is the rate of change of its velocity. The average acceleration of the object for the first five seconds is 4 m/s².

Acceleration of a body is the rate of change of its velocity. Acceleration  is a vector quantity and have both magnitude and direction.  The change in magnitude or direction or both of velocity changes results in acceleration of the object.

Acceleration is the ratio of change in velocity to the change in time. Thus, it can be written as :

a = ΔV/ΔT

Here, the time changes from 0 to 5 seconds and the velocity changes from 0 to 20 m/s. Hence, the average acceleration is calculated as follows:

a =  20 - 0 m/s / ( 5 - 0 s)

   = 4 m/s²

Therefore, the average acceleration of the object in first 5 seconds is 4  m/s².

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45.0 W is the answer

Answer: Residual fluorescence.

Explanation:

The T-shirt is first kept in the light source for 10 to 15 minutes or more and then when it is taken to a dark place it glows.

This phenomenon is known as residual fluorescence.The t-shirt contains phosphors. It is a visible light which is seen after it is energized.

When the T-shirt is under a light source it is basically in a charging mode and then after some time in the dark it glows due to  the phosphors mixed in the fabric.

This is also in some of the toys,watches and other stuffs that glows in the dark.

Answer:

Explanation:

to better themselves and to be good educated people

Answer:

A. better themselves.

Explanation:

just did test edg2020

Answer: the angle of refraction in the water is 34.2 degrees and then in the glass is 41 degrees approximately

Explanation:

A laser light travels from air (n=1) through water (n=1.33), and then a piece of glass (n=1.55).

If the light first enters the water at an angle of 25.0 degrees (from air to water). That means

The incident angle  = 25 degrees

Using Snell' law

n(air)/n(water) = sin 25/sin R

Where R is the angle of refraction

1/1.33 = sin 25/sin R

Make sin R the subject of formula

Sin R = sin 25 / 0.7518

Sin R = 0.5620

R = sin^-1(0.5620)

R = 34.2 degrees

This angle will be an incident angle when the light is travelling from the water to glass. Using Snell law agains,

1.33/1.55 = sin 34.2/sin R

Cross multiply

1.33 sin R = 0.87122

Make R the subject of formula

Sin R = 0.87122/1.33

Sin R = 0.6550

R = sin^-1(0.6550)

R = 40.9 degrees

Therefore, the angle of refraction in the water is 34.2 degrees and then in the glass is 41 degrees approximately.

Find the attached file for the figure

Option D because the temperatures there are like 800 degrees Fahrenheit which means it is enough o melt lead so that's the key element that caused Venus and earth to have different environments because energy is key to life.

Answer: elastic potential energy = 20.27 J

Explanation:

Given that the

Mass M = 0.470 kg

Height h = 4.40 m

Spring constant K = 85 N/m

The maximum elastic potential will be equal to the maximum kinetic energy experienced by the block.

But according to conservative of energy, the maximum kinetic energy is equal to the maximum potential energy experienced by the block of mass M.

That is

K .E = P.E = mgh

Where g = 9.8m/s^2

Substitutes all the parameters into the formula

K.E = 0.470 × 9.8 × 4.4

K.E = 20.27 J

Where K.E = maximum elastic potential energy stored in the spring during the motion of the blocks after the collision which is 20.27J.

The maximum potential energy stored in the spring during the motion of the blocks is 20.39 J.

The given parameters;

The extension of the spring is calculated as follows;

[tex]F =kx\\\\mg = kx\\\\x = \frac{mg}{k} \\\\x = \frac{0.47 \times 9.8}{85} \\\\x = 0.054 \ m[/tex]

The maximum potential energy stored in the spring during the motion of the blocks is calculated as;

[tex]P.E = \frac{1}{2} kx^2 \ + mgh\\\\P.E = \frac{1}{2} (85)(0.054)^2 \ + \ (0.47)(9.8)(4.4)\\\\P.E = 20.39 \ J[/tex]

Thus, the maximum potential energy stored in the spring during the motion of the blocks is 20.39 J.

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Answer:

a.) The main scale reading is 10.2cm

b.) Division 7 = 0.07

c.) 10.27 cm

d.)  10.31 cm

e.)  10.24 cm  

Explanation:

The figure depicts a vernier caliper readings

a.) The main scale reading is 10.2 cm

The reading before the vernier scale

b.) Division 7 = 0.07

the point where the main scale and vernier scale meet

c.) The observed readings is

10.2 + 0.07 = 10.27 cm

d.) If the instrument has a positive zero error of 4 division

correct reading = 10.27 + 0.04 = 10.31cm

e.)  If the instrument has a negative zero error of 3 division

correct reading = 10.27 - 0.03 = 10.24cm