It's not D
10 Select the correct answer.
A stability ball can be used in yoga to do which of the following?
A. Provide support
В. Make a move more challenging
C. Make a move easier
D. All of the above ​

The frequency of the sound heard by the driver of car B from car A is mathematically given as

F=738.6hz

Question Parameters:

A car moves at 72 km/h and car B moves at 90 km/h, approaching each other. A car honked with a frequency of 650 Hz

the speed of the sound waves in the air is 350 m/s,

Generally, the equation for the Frequency   is mathematically given as

[tex]F=f'(\frac{v+vob}{v-vsource})[/tex]

Therefore

[tex]F=650(\frac{350+25}{350-20})[/tex]

F=738.6hz

In conclusion, the frequency of the sound is

F=738.6hz

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Answer:

The best estimate of the depth of the well is 2.3 sec.

Explanation:

Given that,

Record time,

[tex]t_{1}=2.19\ sec[/tex]

[tex]t_{2}=2.30\ sec[/tex]

[tex]t_{3}=2.26\ sec[/tex]

[tex]t_{4}=2.29\ sec[/tex]

[tex]t_{5}=2.27\ sec[/tex]

We need to find the best estimate of the depth of the well

According to record time,

We can write of the record time

[tex]t_{1}=2.19\approx 2.2\ sec[/tex]

[tex]t_{2}=2.30\approx 2.3\ sec[/tex]

[tex]t_{3}=2.26\approx 2.3\ sec[/tex]

[tex]t_{4}=2.29\approx 2.3\ sec[/tex]

[tex]t_{5}=2.27\approx 2.3\ sec[/tex]

Here, all time is nearest 2.3 sec.

So, we can say that the best estimate of the depth of the well is 2.3 sec.

Hence, The best estimate of the depth of the well is 2.3 sec.

Answer:

The answer is B. passive

Explanation:

Answer:

passive

Explanation:

i say this because it makes the most sense to me and most of the time in the questions they go for the answer that makes the most sense so my final answer is (B.)

Answer:

wavelength =75m

using v=fΠ

where Π is wavelength

Answer:

-5 m/s^2

Explanation:

[tex]acceleration = \frac{change \: in \: velocity}{time} \\ \\ = \frac{15 - 25}{2} \\ \\ = \frac{ - 10}{2} \\ \\ = - 5 \: m {s}^{ - 2} \\ \\ negative \: sign \: represents \: that \: \\ object \: is \: slowing \: down.[/tex]

Explanation:

Acceleration is the change in velocity over time.

a = Δv / Δt

a = (15 m/s − 25 m/s) / 2.0 s

a = -5.0 m/s²

The magnitude of the acceleration is 5.0 m/s².

Question :-

Answer :-

Explanation :-

As per the provided information in the given question, we have been given that the Power is 600 Watt , Voltage is given as 120 Volt . And, we have been asked to calculate the Current .

Now, for calculating the Current , we will use the Formula :-

[tex] \bigstar \: \: \boxed{ \sf{ \: Current \: \: = \: \: \dfrac{ \: Power \: }{Voltage} \: }} \\ [/tex]

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

[tex] \dag \: \: \: \sf {Current \: \: = \: \: \dfrac{\: Power \:}{Voltage}} \\ [/tex]

[tex] \longmapsto \: \: \sf {Current \: \: = \: \: \dfrac {\: 600 \:}{120}}[/tex]

[tex] \longmapsto \: \: \bf {Current \: \: = \: \: 5 \: Ampere} [/tex]

Hence :-

[tex] \underline {\rule {89pt}{4pt}} \: \: \underline {\rule {89pt}{4pt}} [/tex]

Answer:

I think it is C. cold from the ice pack is transferred to the ankle

Explanation:

Hope I helped if I did plz give me brainiest thanks <3

Answer:

Hello

well u have already mentioned the answer in the question itself.....

Conduction causes the ice pack to lose thermal energy. Conduction causes the ankle to gain thermal energy. ... Heat from the ankle is transferred to the ice pack.

Answer:

A) is one third

because according to Boyle's law pressure is inversely proportional to the volume

Answer:

C. 352.0 kg-m/s

Explanation: Took the test on APEX

Answer:

The answer is C. 352.0 kg-m/s

Answer:

the answer is semidiurnal

Answer:

I think it is semi-diurnal :)

Hope this helps!!

Have a great day!!

Please rate and mark brainliest!!

third

Explanation:

i think so because finding structure of dna can help a lot for well being of human being

Answer:

1 kw-hr = 1000 w * 3600 sec = 3.6E6 Joules

E = P t = 120 J/C * 8 C/sec * 3600 sec /hr * 15 hr =   5.18E7Joules

where E is energy used by microwave

5.18E7 / 3.6E6 * .11 = $1.58    cost to run for 15 hrs

Answer:

If you are using a machine that has a mechanical advantage of 2.5,you will have increased your EFFORT DISTANCE by 2.5 times. This allows you to REDUCE the EFFORT FORCE needed by 2.5 times.

Potential Energy of the ball = Amount of work needed to place the ball on the 2 m shelf = [tex]19.62 \times m = f(mass \; of\; balls )[/tex]

By the definition of work

[tex]Work = F.ds......(1)[/tex]

Let us consider a ball having mass = [tex]m[/tex]

Weight of the ball = [tex]mg[/tex]

Equation (1) defines Work.

If the work is to be done against acceleration due to gravity of earth

then the work needed to keep the ball at height [tex]h[/tex]  is given by equation (2)

[tex]Work = mg\times h[/tex]......... (2)

Also the Potential Energy of mass m kept at height h is given by equation (3)

[tex]Potential \; Energy = mgh[/tex]......(3)

given

The height of the shelf = 2 m

So From Equation (1) and (2) we get

[tex]Work = Potetial Energy = 19.62\times m \; Joule[/tex]

So both Work and Potential Energy are equal in this case and function of masses of the balls.

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Answe

common checks

Explanation:

Answer:

The answer is 22.14 meters per second

Explanation:

I gotchu brother

As the clump of colored fluid at the bottom of the lava lamp reaches the top, Its temperature increases. Temperature directs to the hotness or coldness of a body.

Temperature directs to the hotness or coldness of a body. In clear terms, it is the method of finding the kinetic energy of particles within an entity. Faster the motion of particles more the temperature.

Temperature is essential in all areas of Science right from Physics to Geology and also it is important in most parts of our everyday life.

The clump of colorful fluid at the bottom of the lava lamp rises to the top because the clump, as the heavier liquid, absorbs heat and expands, becoming less dense and rising.

Due to this the temperature is increasing.Hence As the clump of colored fluid at the bottom of the lava lamp reaches the top, Its temperature increases

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Answer:

A density

Explanation:

all the others were wrong smh had to redo quiz after all

Explanation:

The SI unit of acceleration is the metre per second squared (m s−2); or "metre per second per second", as the velocity in metres per second changes by the acceleration value, every second.

Answer: 6 N

Explanation: W (WORK) = 15 JOULES

                      S (DISTANCE) = 2.5 m

                       F (FORCE) = ?

              BY USING FORmULA OF WORK DONE

                     W = F.S

                      F =W/S

                      F = 15/2.5

                      F =  6 N

Answer: D. Cobalt

Explanation: Cobalt has excellent magnetic properties so it is D. Cobalt.

The element which has magnetic properties from the given list of elements would be cobalt , therefore the correct answer is option C.

The elements of the periodic tables that behave as metals, as well as the nonmetal in some chemical or physical aspects, are known as metalloids. Some examples of metalloids are Boron , silicon , germanium, arsenic , antimony , tellurium , etc.

As given in the problem we have to find out the element which possesses the magnetic properties from the given list ,

Calcium belongs to group 2 of the periodic table and nonmagnetic element . Similarly , carbon is a nonmagnetic material .

Thus , the element which has magnetic properties from the given list of elements would be cobalt, therefore the correct answer is option C .

Learn more about metalloids from here, refer to  the link given below ;

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Hi there!

Recall the following equation:

[tex]\large\boxed{P = IV}[/tex]

P = Power (W)
I = Current (A)

V = Voltage (V)

Plug in the given values to solve for power:

[tex]P = 120 * 12.5 = \boxed{1500 W}[/tex]

Answer:

Force = 7N

Explanation:

Force = Mass x Acceleration = 2 x 3.5 = 7N

The two given graphs can be displaying the motion of the different objects. As the distance-versus-time graph shows the speed is constant while the speed-versus-time graph shows the uniform acceleration motion.

A uniformly accelerated motion is one in which the acceleration of the object throughout the motion is uniform. When an object is moving in a straight line with an increase in velocity at equal intervals of time, then we can say that object has uniform acceleration.

Projectile motion is an example of motion in a plane with uniform acceleration. The only acceleration acting on the particle is the acceleration due to gravity (g)  in the case of projectile motion. Since there is no acceleration in the horizontal direction, the velocity in the x-direction will be constant.

In the distance-versus-time graph, the straight line passing through the origin shows the increase in the distance at equal intervals of time. So, the speed of the object will be constant.

The speed-versus-time graph shows the increase in the speed at equal intervals of time. So, the acceleration of the object will be constant. So this is the graph of the motion of a different object.

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All of the following are types of schizophrenic disorders except  Disorganized.

Schizophrenia is a chronic brain disease that affects fewer than 1% of the population in the United States. Symptoms of schizophrenia include delusions,

Hallucinations, disordered speech, difficulty thinking, and a lack of desire. Most symptoms of schizophrenia can be considerably improved with therapy, and the risk of recurrence can be reduced.

Despite the fact that there is no cure for schizophrenia, research is leading to new and safer therapies.

Experts are also examining genetics, performing behavioral studies, and utilizing modern imaging to examine the structure and function of the brain to figure out what causes the condition.

These methods carry the prospect of developing new and more effective treatments.

All of the following are types of schizophrenic disorders except  Disorganized.

Hence all of the following are types of schizophrenic disorders except for Disorganized.

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Answer:

C.

Explanation:

I got it right

the friction force provided by the brakes is 30000 N.

Friction force is the force that opposes the motion between two bodies in contact.

To calculate the average friction force provided by the brakes, we apply the formula below.

Formula:

Where:

Make F' the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, the friction force provided by the brakes is 30000 N

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The correct answer is "the pitch drops to a lower pitch once the ambulance passes by Juan".

When there is relative motion between the source and the listener, the Doppler effect causes the frequency to rise or decrease. The frequency determines the pitch. When the frequency rises, the pitch rises with it.

When the source and the listener get closer to each other, the frequency rises. There is a reduction in frequency as the source and listener move away from each other.

Juan is standing on the street in the provided situation. When an ambulance approaches Juan and then passes by, the pitch dips to a lower level.

Hence "The pitch decreases to a lower pitch once the ambulance passes by Juan," is the right answer.

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Answer:

Explanation:

c.the pitch drops to a lower pitch once the ambulance passes by Juan

If the sphere is positively charged, the positive rod is repelled by the sphere while the negative rod is attracted by the sphere.

An electrical charge can be positive or negative. From the laws of electrostatics, unlike charges attract while like charges repel. As such the effect observed when the rods are individually brought near the sphere will decide the charge on the sphere.

If the sphere is neutral, there is no effect observed when each rod is brought near the sphere. If the sphere is positively charged, the positive rod is repelled by the sphere while the negative rod is attracted by the sphere.

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The electric potential energy of a charge that experiences a force of 3. 6 × 10⁻⁴ N when it is 9. 8 × 10⁺⁵m from the source of the electric field will be 3.528×10⁻⁸ V.

Electric potential energy is the amount of work needed to move a unit charge from a point to a specific point against an electric field.

The given data in the problem is;

F is the electric force= 3. 6 × 10⁻⁴ N

V is the electric potential=?

d is the distance = 9. 8 × 10⁻⁵ m

The electric potential energy is given as the product of the electric force and distance.

V=Fd

V = 3.6×10⁻⁴ ×( 9.8×10⁻⁵)

V = 3.528×10⁻⁸ V.

Hence the electric potential energy of a charge will be 3.528×10⁻⁸ V.

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