3 1.2.A 4052 40.2 12 V V 5 Fig. 7.20 Calculate the total energy developed in 5 minutes by the system above. A 120 J B D 740 J E 144 J 144 J C 240 J 8640 J (SSCE)​

Answer:

0.18 A or 180 mA

Explanation:

\(I=\frac{V}{R} =\frac{9}{50} =0.18\)

I hope this help you

Answer:

induction

Explanation:

a change in current (the pulse) causes a change in the magnetic field resulting from that current. the nearby wire is inside that magnetic field. when that magnetic field changes, it induces a current in any nearby conductor. the amount of current induced depends on the strength of the field and the distance between the conductors.

Answer:

the answer is full moon

Explanation:

When the moon passes between earth and sun the lunar shadow is seen as solar eclipse on earth.

The stretch in a spring can be calculated using the formula:

where delta_x is the stretch, F_spring is the force applied on the spring and k is the spring constant.

The force applied on the spring is equal to the weight of the mass, which is 7.3 kg, multiplied by the acceleration due to gravity (9.8 m/s^2):

So the stretch in the spring can be calculated as follows:

The Stretch of a spring is analogous to the vibration of a pendulum. This is because there is an alternating movement of the spring past the balance point. Stretch on the spring also has a tension restoring force according to Hooke's law: Fs = -K.X Where K is the spring constant, and X is the stretch length.

Learn More About Stretch Spring brainly.com/question/29609505

#SPJ4

Answer:

50473.45

Explanation:

(6.67×10^-11)(1.10×10^18)/(x)^2=0.0288.

answer:  5.047345 × 10^4 (50473.45)

The force on a positive charge is arbitrarily chosen as the direction of the electric field since an electric field has both magnitude and direction.

The direction of the force acting on a negative charge is the exact opposite of the direction acting on a positive charge. The electric field surrounding a single positive charge is directed radially outward because positive charges resist one another.

Electric fields are typically shown as lines of force or field lines, which begin on positive charges and end on negative charges. A field line's tangent line shows the direction of the electric field there.

The electric field is stronger where the field lines are near together than it is farther apart. Depending on how the charge is distributed in an electric field, which is believed to be the source of the electric field, the size of the electric field around the source.

To know more about electric field:

https://brainly.com/question/30544719

#SPJ4

Answer: because there is no displacement or movement in the watchman's work. According to science when displacement or movement take place it is said to be work. Jul 9, 2020

Hope it helps!

Answer:

That is, mechanical waves cannot travel through a vacuum. This feature of mechanical waves is often demonstrated in a Physics class. A ringing bell is placed in a jar and air inside the jar is evacuated. Once air is removed from the jar, the sound of the ringing bell can no longer be heard.

Answer:

a = 36 m/s

Explanation:

Given:

F = 9 N

m = 0.25 kg

a= ?

Use the equation:  

F = ma (divide by m on both sides to get a alone)

a = F/m= 9/0.25 = 36 m/s

Answer:

to stretch their muscles so they don't strain or hurt themselves

Explanation:

hi!

Answer:

it's kinda like a warm up. they're getting their body ready for extreme physical activity.

Explanation:

hope it helps, and hi

Answer:

its A Weathering breaks down rocks; deposition leaves them in new places

Explanation:

∑ Hey, Lethality ⊃

Answer:

5070.0 has 5 significant figures

870.064080 has 9 significant figures

Explanation:

Given:

How many Sig Figs (Significant Figures) are in each number?

5070.0

870.064080

Solution:

-------------------------------------------------------------------------------------------------------------

5070.0

5070.0 has 5 significant figures ( 5 , 0 , 7 , 0 , and 0 )

Number of significant figures: 5

-------------------------------------------------------------------------------------------------------------

870.064080

870.064080 has 9 significant figures ( 8, 7 ,0,0, 6,4,0,8 and 0 )

Number of significant figures: 9

-------------------------------------------------------------------------------------------------------------

xcookiex12

8/23/2022

hydroxide ion. An acid is a chemical that, when dissolved in water, raises H+.Compared to OH-, the concentration of H+ in basic solutions is low.

A material is said to be an acid if it dissolves in water to form H+ ions, whereas a substance is said to be a base if it dissolves in water to form OH ions.

Ionic chemicals known as acids create positive hydrogen ions (H+) when they are dissolved in water.Acids have a sour flavor, conduct electricity, and combine with metals to form hydrogen gas when dissolved in water.

to know more about ion characterizes visit :

https://brainly.com/question/28449701

#SPJ1

Answer:

I guess rinse it out and wipe it up. It's not a hazardous substance so there's nothing to worry about.

These substances should be cleaned up rinsing the area or removing the compounds with a cloth and dispose of it in the trash.

Sugar is a chemical compound also called sucrose. Its chemical formula is C12H22O11. This compound is normally used to sweeten foods.

On the other hand, common salt is a chemical compound. Its chemical formula is NaCl. This compound is normally used to give food a salty taste.

According to the above, in which a student spilled some salt and sugar in the sink and does not know how to clean it, it can be concluded that the proper way to clean these chemical compounds is by rinsing the area or removing the compounds with a cloth and dispose of it in the trash because neither of them represents biological, chemical or physical risks and a specialized treatment is not required for them.

Learn more at: https://brainly.com/question/12166462

The velocity after 2 seconds is 26 m/s. It takes 11.50 seconds to reach a velocity of 40m/s.

Given the equation s(t) = 6t + 5t²

Let's find the velocity after 2 seconds.

(a) Velocity = (ds)/(dt)

Differentiating s(t) with respect to t, we get; ds(t) / dt = 6 + 10t

At t = 2,ds(t) / dt = 6 + 10t = 6 + 10(2) = 26m/s

Therefore, the velocity after 2 seconds is 26 m/s.

(b) We are to find how long it takes for the velocity to reach 40m/s. We know that the initial velocity of the ball, u = 6m/s. Acceleration = gsinθ = 9.81 x sin (angle of inclination) = 9.81 x 0.3 = 2.943 m/s²From the first equation of motion, v = u + at

We know v = 40m/s, u = 6m/s, a = 2.943m/s² and t is what we are to find, hence the equation becomes;40 = 6 + 2.943(t)t = (40 - 6) / 2.943t = 11.50s

Therefore, it takes 11.50 seconds to reach a velocity of 40m/s.

To know more about velocity refer to:

https://brainly.com/question/16618732

#SPJ11

The phenomenon of pressure waves emanating from the bullet, causing damage remote from its path, is known as B. cavitation.

Cavitation occurs when a bullet passes through a medium, like air or water, at high velocity, causing the medium to compress and expand rapidly. The rapid compression and expansion create a series of shock waves that can cause damage beyond the path of the bullet itself. Cavitation can cause damage to objects as well as tissue and organs, as the shock waves cause significant disruption. The effects of cavitation can be seen in other forms of high-velocity projectiles, such as missiles. Cavitation can also be used in underwater applications to create shock waves that can be used to clear debris or even kill marine life.

In summary, cavitation is the phenomenon of pressure waves emanating from a bullet, causing damage remote from its path. This phenomenon can cause considerable damage beyond the path of the bullet, as well as having practical applications in underwater engineering. Therefore the correct option is B

Know more about cavitation here:

https://brainly.com/question/20713735

#SPJ11  

The precise value of sin 60 degrees is 3/2, as solved by trigonometry.

0° Cos = Sin 90° = 1

Cos 30°= Sin 60°= 1/32

45° Cos = Sin 45° = 1/2

60° Cos = Sin 30° = 1/2

90° Cos = Sin 0° = 0

Also,

Tan 0 degrees = Sin 0 degrees/Cos 0 degrees = 0 degrees

Tan 30 degrees = Sin 30 degrees/Cos 30 degrees = 1/3

Tan 45 degrees = Sin 45 degrees/Cos 45 degrees = 1

Sin 60°/Cos 60° = 3

Sin 90°/Cos 90°= Tan 90°

The above trigonometric ratio values are in degrees. We can also talk about the values in terms of radians. Radians are used for unit circles with radius one. The radian is represented as.

For more information on value of sin 60° kindly visit to

https://brainly.com/question/1602098

#SPJ4

In this experiment, there may be some sources of error. The following are some possible sources of error:1. Variations in the position of the charges and the electrometer2. Power supply voltage may fluctuate3. The connecting wires of the circuit may have high resistance4.

Electromagnetic interference, such as from other electrical equipment The inaccuracies in this experiment are that they are sensitive to the positioning of the charges and electrometer, making them difficult to read. Power supply voltage may fluctuate, which would affect the measurements. The connecting wires of the circuit may have high resistance, which may also affect the measurements. Electromagnetic interference, such as from other electrical equipment, could also cause inaccuracies in the experiment. Coulomb's law in General Physics I explains why the force experienced by each charge is always the same. The force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Therefore, regardless of the charges' magnitudes, the force between them will always be the same.The graphs yielded a linear fit. That is what was predicted in the discussion.

To know more about experienced visit:

https://brainly.com/question/9516896

#SPJ11

Answer:

0.248 m

Explanation:

Answer:

C eq = .96uF

Explanation:

Answer:

In reality, the filament gets so hot it in a real sense bubbles off molecules and electrons. Now and again this material gathers as a dull spot at the highest point of the bulb. Eventually, the filament falls apart, gets frail, and breaks, subsequently finishing the life of the light. Lights radiate light by siphoning an electric flow through a dainty tungsten fiber. The filament warms and emits light. Over the long haul, the filament oxidizes and turns out to be increasingly fragile, until it splits up and the bulb goes out. ... Tungsten picks up obstruction as it warms.

Hope this helped :)

Answer:

0.28m/s²

Explanation:

Force = mass•acceleration

F = m•a

50 = 176•a Divide both sides by 176:

50/176 = a ≈ 0.28 m/s²

1. speed = distance/time taken

= 1200/5×60

= 4 m/sec.

then Siham run 4 meters each ine second.

2. if speed = distance/time taken

then time taken= distance/ speed

= 200/1.5 = 200÷(3/2)

= 200×(2/3)

= 133.3333....sec.

then I need 133.333 sec to get to class early.

3. from the previous example

then distance = speed × time taken

= 60×5.5

= 60×(11/2)

=330 km. or 330×10³m.

then Mahmoud ❤️ covers 330km.

4.the q question is repeated.

Answer:

a. Vf = 39.24 [m/s]

b. Vf = 31.24 [m/s]

c. Vf = 47.24 [m/s].

Explanation:

To solve this problem we can use the following equation of kinematics. We have to keep in mind that the gravitational acceleration acts downwards, therefore when the rock falls towards the abyss it has the same direction of the acceleration and that is why the gravitational acceleration has a positive sign in the equation.

\(v_{f}=v_{o}+g*t\)

where:

Vf = final velocity [m/s]

Vo = initial velocity = 0 (when the rock is dropped)

g = gravitational acceleration = 9.81 [m/s²]

t = time = 4 [s]

a.

\(v_{f}=0+9.81*4\\v_{f}= 39.24 [m/s]\)

b.

In this particular situation, the acceleration will be taken as negative because the gravity is pointing in the opposite direction of the movement of the rock.

\(v_{f}=8-(9.81*4)\\v_{f}=-31.24[m/s]\)

The negative sign in the answer tells us that the rock no longer moves up instead it does downwards when 4 seconds have passed.

c.

\(v_{f}=8+(9.81*4)\\v_{f}=47.24[m/s]\)

To determine the power required to drive the heat pump, we can use the concept of the Coefficient of Performance (COP). The COP of a heat pump is defined as the ratio of the heat delivered to the heat absorbed from the outside environment.

In this case, the heat delivered is the heat lost by the house to the outside air, which is 10 kW.

The COP of a heat pump can be expressed as COP = Q_delivered / W_input, where Q_delivered is the heat delivered and W_input is the power input to the heat pump.

Since the COP is not provided, we cannot directly calculate the power required to drive the heat pump. However, typical values of COP for heat pumps range from 2 to 4. Let's assume a COP of 3 for this case.

Using the COP formula, we have COP = Q_delivered / W_input. Rearranging the equation, we can solve for W_input: W_input = Q_delivered / COP.

Substituting the values, W_input = 10 kW / 3 = 3.33 kW.

Therefore, the power required to drive the heat pump is approximately 3.33 kW.

To know more about Coefficient visit:

https://brainly.com/question/1594145

#SPJ11

The semi-major axis of an ellipse is half the length of the longest diameter of the ellipse.

The semi-major axis of an ellipse is a fundamental parameter that determines its shape and size. It is defined as half the length of the longest diameter of the ellipse. The diameter of an ellipse is any line segment that passes through the center and has endpoints on the boundary of the ellipse. The longest diameter, also known as the major axis, is the diameter that has the largest length among all possible diameters of the ellipse.

To find the semi-major axis, we take half the length of the major axis. The major axis passes through the center of the ellipse and is the longest distance between any two points on the ellipse. By halving the length of the major axis, we obtain the semi-major axis, which represents the distance from the center to either focus of the ellipse.

The foci of an ellipse are two fixed points located on the major axis, equidistant from the center. The semi-major axis is indeed the distance between these two foci, as it is half the length of the longest diameter, which connects them. Thus, the semi-major axis provides a concise measure of the size and shape of an ellipse.

To learn more about parameter click here:

brainly.com/question/30158745

#SPJ11

Answer:

When magnesium reacts with oxygen, it produces light bright enough to blind you temporarily. Magnesium burns so bright because the reaction releases a lot of heat. As a result of this exothermic reaction, magnesium gives two electrons to oxygen, forming powdery magnesium oxide (MgO).

Answer:

Mg+O2 -----MgO

balanced equation

2Mg+O2-------2MgO

Answer: find the answer in the explanation.

Explanation:

From the experiment set up in the diagram, the pointer is resting on the drinking straw while the rod is resting on the drinking straw.

When the rod is being heated through the bursen burner, there will be linear expansion in the rod. As the rod increases its length, this causes the drinking straw to roll and thereby causing the pointer to rotate.

The pointer therefore rotates because of the thermer expansion that happen in the rod due to the heat from the bursen burner.

Answer:

the workenergy principle is measured in joules