What is the current in a 160 V circuit if the resistance is 2

Answer:

A change in size, shape, or matter.

Explanation:

A physical change does not produce new substances. A physical change may only change the physical properties of a substance. a change in size, shape, or phase of matter.

Answer: It does not change the identity of a substance

Explanation:

Answer:

D

Explanation:

because the correct answer is D

(a) The initial speed of the rock is 19.1 m/s.

(b) The greatest height of the rock as measured from the base of the

cliff is 55.6 m.

(c) i. As the ball is thrown up, its kinetic energy is converted to potential energy.

ii. When then ball reaches the maximum height, its kinetic energy becomes zero and it will have maximum potential energy.

iii. When the rock reaches the base of the cliff, its potential energy becomes zero and it will have maximum kinetic energy.

The initial speed of the rock is determined by applying the principle of conservation of mechanical energy as shown below;

Ui + K.Ei = Uf + K.Ef

mghi + ¹/₂mvi² = mghf + ¹/₂mvf²

(0.37 x 9.8 x 37) + ¹/₂(0.37)vi² = (0.37 x 9.8 x 0) + ¹/₂(0.37 x 33)²

134.16 + 0.185vi² = 0 + 201.47

0.185vi² = 201.47 - 134.16

0.185vi² =  67.31

vi² = 67.31/0.185

vi² = 363.84

vi = √363.84

vi = 19.1 m/s

vf² = vi² - 2gh

0 = vi² - 2gh

2gh = vi²

h = vi²/2g

h = (19.1)²/(2 x 9.8)

h = 18.6 m

The maximum height from the base = 37 m + 18.6 m = 55.6 m

When the ball is thrown up, its kinetic energy is converted to potential energy.

When then ball reaches the maximum height, its kinetic energy becomes zero and it will have maximum potential energy.

When the rock reaches the base of the cliff, its potential energy becomes zero and it will have maximum kinetic energy.

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Let's see

[tex]\\ \rm\Rrightarrow 1metre= 10^2cm[/tex]

[tex]\\ \rm\Rrightarrow 1m=10^3mm[/tex]

[tex]\\ \rm\Rrightarrow 1m=10^6\mu m[/tex]

[tex]\\ \rm\Rrightarrow 1m=10^{-3}km[/tex]

[tex]\\ \rm\Rrightarrow 1m=10^{9}nm[/tex]

Answer:

C - the greatest net force is on c with 25N - 10N = 15N

a = F / M

a = (v2 - v1) / t     so C has the greatest acceleration and will reach the greatest velocity

KE = 1/2 M v^2

The diagrams show four bodies moving in the directions shown. The only forces acting on the bodies are shown in each diagram. The option C body gains the most kinetic energy when moving a distance of 1.0m.

When some amount of force is applied on a object it can store a energy in that object. That is the kinetic energy. Mathematically the mass of the object and its change in acceleration in that object makes the kinetic energy. It is a vector quantity.

To calculate the kinetic energy we are using the formula,

U= (1/2)mv²

U = (1/2) ma²t²

Or, U= (1/2)ma × at²

Or, U= F × (1/2)at²

From this calculation we can see that if there is more force applied on a body that generates more kinetic energy on that object.

According to the question ,

Force of the object of Option A has (F) = f₂ - f₁

                                                                = (20 - 10)

                                                                = 10N

Force of the object of Option B has (F) = 10N

Force of the object of Option C has (F) = f₂ - f₁

                                                                 =(25-10)= 15N

Force of the object of Option D has (F) = f₂ - f₁

                                                                 = (30-30)

                                                                 = 0N

According to the question, option C has the most amount of force and we know the more force generate the more kinetic energy. So it has the more kinetic energy.

We can easily say that,  The option C body gains the most kinetic energy when moving a distance of 1.0m

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Answer is ...

Happy to help ..

Answer:

Below in the picture:-

I hope it helps.

Explanation:

here, force applied (N) = 345 N

or, mass of scooter (m) = 70 kg

now, acceleration (a) = ?

we know, force = mass × acceleration

or, 345 = 70 × acceleration

or, acceleration = 345/70

therefore, acceleration = 4.9 m/s2 (meter/second square)

Answer:

B. Different seasons in the hemispheres during the same time of year.

Explanation:

The seasons are caused by the tilted axis of the Earth.

The weight of an object on Earth with a mass of 230 kg is 2256.3 newtons (n).

The weight of an object is the force acting on the object due to the acceleration of gravity. It is defined as the vertical force experienced by a mass as a result of gravitation.

Weight is obtained from the product of mass and acceleration due to gravity (g). The object gets accelerated due to gravity when the object is in free fall. The value of g is 9.8 m/s².

From the given,

mass of an object = 230 kg

weight of an objcet=?

weight (w) = m×a, where m is the mass of the object and the unit of mass is the kilogram, a is the acceleration due to gravity and its unit is m/s², and w is the weight of the object and the unit of weight is Newton.

w = m×a

  = 230×9.81

  = 2256.3 N

w = 2256.3 N

Thus the weight of an object is 2256.3 N.

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Answer:

A is the basis for all of the other assumptions.

Everything else supports A.

Answer:

A) The blades convert wind energy into rotational energy.

Explanation:

Wind turbines use blades to collect the wind's kinetic energy. Wind flows over the blades creating lift (similar to the effect on airplane wings), which causes the blades to turn. The blades are connected to a drive shaft that turns an electric generator, which produces (generates) electricity.

a. We can calculate the amount of work by calculating the area under the graph.

first area (rectangular): 2.5 x 6 = 15

second area(trapezoid): 1/2 x (6+10) x 2.5 =20

total work done: 35 J

b. the force was first applied = 6 N

F = m.a

a = 6 : 3 = 2 m/s²

vf²=vi²+2as

vf²=6²+2.2.5

vf²=56

vf=7.5 m/s

Answer:

The odometer registers the distance traveled by the vehicle; it consists of a train of gears (with a gear ratio of 1,000:1) that causes a drum, graduated in 10ths of a mile or kilometre, to make one turn per mile or kilometre.

Explanation:

hope it helps

Answer:

Brownian motion, or pedesis, is the random motion of particles suspended in a medium.

Explanation:

of motion typically consists of random fluctuations in a particle's position inside a fluid sub-domain,

Answer:

The erratic random movement of microscopic particles in a fluid, as a result of continuous bombardment from molecules of the surrounding medium is called Brownian motion. Hope it helps you.

Answer: All organisms generate waste and dead material that is recycled by decomposers.

Explanation: Give me brainiest!

Answer:

If it has 12 nucleons and 6 of them are protons the other six must be neutrons (6).

Answer:

The plants recycle carbon during the process of photosynthesis by the carbon in the carbon dioxide is recycled as glucose. Hence, option D is correct.

Photosynthesis is the conversion of light energy to electrical energy in green plants and several other organisms. Green plants employ light energy during photosynthesis to convert water, carbon dioxide, and mineral into oxygen- and energy-rich organic molecules.

Photosynthesis is essential to the preservation of life on Earth, and its significance cannot be overstated. The amount of food and other organic materials on Earth would quickly decline if photosynthesis stopped. The majority of life forms would vanish, and eventually the atmosphere of Earth would be that few of gaseous oxygen.

The only organisms that might survive in such an environment would be chemosynthetic bacteria, which can use the hydrogen gas of specific inorganic materials and are not reliant on the conversion of light energy.

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Answer:

Nuclear Power Plant

Explanation:

Heat produced during nuclear fission to heat water. In nuclear fission, atoms are split apart to form smaller atoms, releasing energy. Fission takes place inside the reactor of a nuclear power plant. At the center of the reactor is the core, which contains uranium fuel.

The point on the y -axis in which the resultant electric field of the two lines of charge equal to zero is 5.5 cm.

The electric field due to each line is calculated as follows;

[tex]E = \frac{kq}{r^2}[/tex]

where;

In the question, we were given charge per unit length instead of charge.

Since the midpoint of two lines are same, can assume that they are equal.

Hence, the total charge in each line will be;

At a zero resultant electric field;

[tex]E_1 = E_2\\\\E_1 + E_2 = 0\\\\\frac{kq_1}{r_1^2} = \frac{kq_2}{r_2^2}[/tex]

Let the position on y p axis = n

[tex]\frac{K (8 \ \mu C/L)\times L}{(n - 0)^2} + \frac{K(-4\ \mu C/L) \times L}{(0.14 - n)^2} = 0\\\\\frac{K(8\mu C)}{(n)^2} - \frac{K(4\mu C)}{(0.14- n)^2} = 0\\\\\frac{K(8\mu C)}{(n)^2} = \frac{K(4\mu C)}{(0.14- n)^2} \\\\\frac{8}{n^2} = \frac{4}{(0.14 - n)^2} \\\\4n^2 = 8(0.14 - n)^2\\\\4n^2 = 8(0.02 -0.28n - n^2) \\\\4n^2 = 0.16 - 2.24 n - 8n^2\\\\ 12n^2+ 2.24n - 0.16 = 0\\\\a = 12, \ b = 2.24, \ c = -0.16\\\\n = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a} \\\\[/tex]

[tex]n = \frac{-2.24\pm \sqrt{(2.24)^2 - 4(12)(-0.16)} }{2(12)} \\\\n = 0.055 \ m\\\\n = 5.5 \ cm[/tex]

Thus, the point on the y -axis in which the resultant electric field of the two lines of charge equal to zero is 5.5 cm.

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Answer:

it is d that my answer to the question

a. The momentum of the clay before the collision is 0.12m/s

b. The momentum of the clay-bob system after the collision is 0.12m/s

c. The velocity of the clay-bob system after the collision is 2m/s

d. The kinetic energy of the clay-bob system after the collision is 0.12m/s

e. The maximum height of the clay-bob system that they deflect after the collision is 0.204m

f. The velocity  clay should have  before the collision in order for the clay-bob system to complete one circle is 35.13m/s

Momentum is the product of mass and velocity

It is given by ,

p= mv

where, p = momentum

m = mass

v = velocity

velocity is the rate of change of displacement.

To solve , we use Law of conservation of momentum and Law of conservation of  mechanical energy

Law of conservation of momentum states that  in absence of any external forces , the momentum of a system always remains conserved.

i.e,

The momentum  of the system before collision = momentum of the system after collision.

[tex]m_{1} u_{1} + m_{2} u_{2} = m_{1} v_{1} + m_{2} v_{2}[/tex]

Where,

m₁ = mass of first body.

m₂ = mass of the second body.

u₁ = velocity of first body before collision,

u₂ = velocity of the second body before collision

v₁ = velocity of first body after collision

v₂ = velocity of first body after collision.

v₂ = velocity of second body after collision.

The Law states that the total mechanical energy of a system remains conserved and energy can be converted from one form to another form.

The sum of kinetic energy an potential energy is equal to total mechanical energy which is a constant.

So, K.E + P.E = constant

a, Here mass of clay m₁ = 10g = 0.01kg,

velocity of the clay = 12m/s.

therefore, momentum  p = mv.

p = 0.01 x 12 = 0.12kg m/s.

Hence momentum of clay is 0-12kg m/s.

b. The momentum of clay - bob system after collision is

From law of conservation of momentum ,

final momentum = initial momentum

since initial momentum  = 0.12kg m/s

therefore momentum of the clay-bob system after collision is 0.12kg m/s

c. To find the velocity of the body we apply law of conservation of momentum

[tex]m_{1} u_{1} + m_{2} u_{2} = m_{1} v_{1} + m_{2} v_{2}[/tex]

Here  m₁u₁ = 0.12kgm/s

m₂u₂ = 0 (since bob is at rest initally)

m₁ = 10g = 0.01kg

m₂ =  50g = 0.05kg

after collision the system moves with a common velocity v

So,

m₁u₁ = (m₁ + m₂)v

0.12 = (0.01 + 0.05 ) v

So, v = 0.12/0.06 = 2m/s

Hence velocity of clay -bob system after collision is = 2m/s.

d. The kinetic energy of the clay-bob system after the collision.

kinetic energy = 1/2 mv²

Here. m = 0.06kg

v = 2m/s

therefore K.E = (1/2)x 0.06 x 2²

K.E = 0.12J

Hence Kinetic energy of the clay-bob system after collision is 0.12J

e. The maximum height of the clay-bob system that they deflect after the collision.

From Law of Conservation of mechanical energy we have,

The kinetic energy = The potential energy

so, 1/2 mv² = mgh

Here, m = 0.06kg

g= 9,8m/s²

h = height.

So,  h =  2/9.8 = 0.204m

Hence height to which the clay-bob system will rise after collision is 0.204m

e.  To find the velocity that clay should possess  before collision in order for the clay- bob   system to gain the velocity so that it completes the circle -

The velocity that the particle should have at the bottom of the circle in order to complete the circle is v = [tex]\sqrt{5rg\\}[/tex]

Where, r = radius of the circle

g = acceleration due to gravity

Here,

r = 0.7m

g = 9.8m/s

So, v = [tex]\sqrt{5 X0.7 X 9.8 }[/tex] = 5.85m

So clay-bob system should have a velocity of 5.85m at the bottom of the circle so that it can complete the circle

Now,  applying Law of conservation of momentum

m₁u₁ = (m₁ + m₂)v

Here, m₁ = 0.01kg

m₂ = 0.05kg

v = 5.85m/s

So, 0.01u₁ = 0.06 x 5.85  

Hence u₁ = 35.13m/s

So velocity that clay should have is 35.13m/s.

Therefore  the solution of the question is

. The momentum of the clay before the collision is 0.12m/s

b. The momentum of the clay-bob system after the collision is 0.12m/s

c. The velocity of the clay-bob system after the collision is 2m/s

d. The kinetic energy of the clay-bob system after the collision is 0.12m/s

e. The maximum height of the clay-bob system that they deflect after the collision is 0.204m

f. The velocity  clay should have  before the collision in order for the clay-bob system to complete one circle is 35.13m/s

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Answer:

Angular momentum increases and gravitational potential energy decreases after the bug lands.

Explanation:

After the bug lands, the rod begins to rotate. As the system was at rest before, when it begins to rotate, its angular momentum increases from zero to positive.

As the rod begins to rotate, the heavier mass of bug and sphere goes down while the lighter mass of sphere goes up. So the system's gravitational potential energy decreases.

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Answer: Rock candy is candy made of large sugar crystals. To make rock candy, a supersaturated solution of sugar in water is created and left undisturbed for a few days. The driving force behind crystallization is supersaturation.

Answer:

Angular momentum increases and gravitational potential energy decreases after the bug lands.

Explanation:

After the bug lands, the rod begins to rotate. As the system was at rest before, when it begins to rotate, its angular momentum increases from zero to positive.

As the rod begins to rotate, the heavier mass of bug and sphere goes down while the lighter mass of sphere goes up. So the system's gravitational potential energy decreases.

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The fuel efficiency of the vehicle is 5.71%.

The fuel efficiency of the vehicle is determined from the ratio of volume of fuel used to the total distance traveled.

Distance traveled by the vehicle = 350 km

Volume of fuel used = 20 L

e = (20 / 350) x 100

e = 5.71%

Thus, the fuel efficiency of the vehicle is 5.71%.

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Answer: 17.5

Explanation:

1. i did the same problem and got it right
2. you don't do "kmpl" but rather you have to do "km/l" which represents the kilometers over the liters

Answer:

There!!

Explanation:

mark me brainliest!!

Answer:

Answer: simple h. momenta=6.0*3.5. =21.0.

Explanation:

Answer:

acceleration = change in velocity / change in time

acceleration = 14/10

acceleration = 1.4/s^2

Question :-

Answer :-

[tex] \rule {180pt} {2pt} [/tex]

Given :-

To Find :-

Solution :-

As per the provided information in the given question, we have been given that the Frequency of the Wave is 500 Hz . Its Speed is given [tex] \bf {200 \: m ^{-1}} [/tex] . And, we have been asked to calculate the Wavelength .

For calculating the Wavelength , we will use the Formula :-

Therefore , by Substituting the given values in the above Formula :-

⇒ Wavelength = 200 / 500

⇒ Wavelength = 2 / 5

⇒ Wavelength = 0.4

Hence :-

[tex] \underline {\rule {180pt} {4pt}} [/tex]

Which two aspects of sound go together?

Pitch and frequency are two aspects of sound that go together. Pitch means Higness or Lowness of sound. Frequency is the measurement of the number of times that a repeated event occurs per unit of time...~

Answer:

B

Explanation:

B, because pitch and sound produce high- and low-pressure disturbances of the particles of the air at a given frequency, the ear has an ability to detect such frequencies and associate them with the pitch of the sound.