What is the purpose of using
stethoscope by docters?​

Answer:

Gravitational Potential Energy

Explanation:

Gravitational potential energy is energy an object possesses because of its position in a gravitational field  (Hyper Physics). The potential energy is the energy that is stored in an object due to its position relative to some zero position(Physics Classroom).

For a body held at a height (h), the gravitational potential energy is capable to do work once the object is released from the height (h)

Answer:

Hope it helped

stay safe, mark BRAINLIEST

Answer:

1/4 as much

Explanation:

I don't know the explanation

The term that best describes the type of force Carmen is using is "contact force" . Contact force refers to the force that occurs when two objects physically touch or interact with each other.

The correct answer is option A.

In this scenario, Carmen is physically picking up boxes and pushing the cart, which involves direct contact between her body, the boxes, and the cart.

Contact forces are classified as a type of mechanical force, which includes various interactions such as pushing, pulling, lifting, and carrying objects. These forces arise due to the electromagnetic interactions between the atoms and molecules of the objects involved.

Friction (option B) is a specific type of contact force that resists the relative motion or tendency of motion between two surfaces in contact. While friction may be present when Carmen pushes the cart, it is not the primary force being described in this situation.

Gravity (option C) is a non-contact force that attracts objects towards each other due to their masses. While gravity is always present, it is not directly involved in Carmen's action of picking up the boxes and pushing the cart.

Non-contact forces (option D) refer to forces that act on objects without any physical contact. Examples include magnetic forces, electrical forces, and gravitational forces. However, in this scenario, Carmen's actions involve direct physical contact, so non-contact forces do not apply.

For more such information on: force

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Answer:

[tex]a=2.14\ m/s^2[/tex]

Explanation:

Force in upward direction = 45 N

Force in right side = 60 N

Mass of the object, m = 35 kg

Net force on the object is given by :

[tex]F=\sqrt{45^2+60^2} \\F=75\ N[/tex]

We know that,

F = ma

Where

a is acceleration of the object

[tex]a=\dfrac{F}{m}\\\\a=\dfrac{75\ N}{35\ kg}\\\\a=2.14\ m/s^2[/tex]

So, the acceleration of the object is [tex]2.14\ m/s^2[/tex].

Answer:

Let's explain this briefly.

Suppose that we have a piece of ice (this is, solid water) now we give energy to the piece of ice, so the temperature of the ice increases. There is a point where the piece of ice will start a change of phase, at this point the temperature of the ice stops increasing because all the energy we give to the ice is used in the change of phase.

Once we have a complete change of phase, the temperature can increase again, and now we will have liquid water.

If we keep increasing the temperature we will see this happen again, when we have the transition from liquid to gas.

(and a similar thing happen when we have a material in a given phase and we remove heat from the material).

In the images we can see the different changes of phase of water.

1) In the first image we can see the circle in a part where the temperature is constant, so the temperature does not change in this part, which means that there is a change of phase happening.

2) Here we have the circle in a diagonal line, so here the temperature is changing, meaning that we have an increase of temperature in this region.

3) Here we want to know what the x-axis represents, this should rerpesent the energy that is being given to the material (so in some parts we see that the temperature increases and in other parts we see that the material changes of phase)

Then here the correct option is heat over time.

4) The freezing point is the temperature in which the change of phase from liquid to solid happens (or solid to liquid).

In the graph we can see that this change of phase happens at the temperature T = -210°C

Then the correct option is -210°C (The last option)

Answer:

force can also be considered as weight so

Spring balance is used for measuring Force.

Explanation:

Answer:

A) 0.12 m

B) 11.5 degrees

A) Two convex lenses

D) Amplitude

A) 491.8 m

B) 2.92 m

C) 9.677 MHz

I couldn't see the options for number eight, so I'm unsure if this is correct, but I got 507.7 K in my calculations.

Answer:

12 m/s²

Explanation:

Acceleration = change in velocity / time

a = (1300-1240) / 5

a = 60 / 6

a = 12

Answer:

[tex]\boxed{\text{\sf \Large 12 m/s^2 $}}[/tex]

Explanation:

Use acceleration formula

[tex]\displaystyle \text{$ \sf Acceleration=\frac{Change \ in\ velocity}{Time \ taken} $}[/tex]

[tex]\displaystyle a=\frac{1300-1240}{5.0} =12[/tex]

Answer:

.

Explanation:

Answer:

B) Blinking .

Explanation:

Answer: A nanometer-size carrier could be designed to bring  the chemotherapy drugs only to cancer cells.

Explanation:

The problem with chemotherapy as noted by the text above, is that the drugs used target both living and cancer cells and kills them regardless.

The solution therefore, would be to find a way to ensure that chemotherapy  targeted only the cancer cells.

One way to do that is to design a nanometer sized carrier that would take the drugs to cancer cells alone so that they would kill only the canerous cells and leave the healthy ones.

Answer:

A. is correct edge 2023

Explanation:

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Answer: 11.8 m/s

Explanation: Multiply the height, 1.20 m by 9.8. This is because on earth free falling objects have a speed of 9.8 m/s^2 downward.

Answer:

0.1 m/s

Explanation:

Please see attached photo for explanation.

Mass of 1st cart (m₁) = 500 g

Initial velocity of 1st cart (u₁) = 0.25 m/s

Mass of 2nd cart (m₂) = 750 g

Initial velocity of 2nd cart (u₂) = 0 m/s

Velocity (v) after collision =.?

m₁u₁ + m₂u₂ = v(m₁ + m₂)

(500 × 0.25) + (750 × 0) = v(500 + 750)

125 + 0 = v(1250)

125 = 1250v

Divide both side by 1250

v = 125 / 1250

v = 0.1 m/s

Thus, the two cart will move with a velocity of 0.1 m/s after collision.

The velocity of the cart will be 0.1 m/sec.Velocity is the rate of change of displacement. Its unit is m/sec.

According to the law of conservation of momentum, the momentum of the body before the collision is always equal to the momentum of the body after the collision.

The given data in the problem is;

(m₁)  is the mass of  cart 1 = 500 g

(u₁)  is the initial velocity of  cart  1= 0.25 m/s

(m₂) is the mass of 2nd cart = 750 g

(u₂) is the initial velocity of 2nd cart  = 0 m/s

(v)  is the velocity after collision =.?

According to the law of conservation of momentum;

Momentum before collision =Momentum after collision

[tex]\rm m_1u_1 + m_2u_2 = v(m_1 + m_2)\\\\(500 \times 0.25) + (750 \times 0) = v \times (500 + 750) \\\\ 125 + 0 = v \times (1250) \times 125 \\\\ \rm v= \frac{125}{1250} \\\\ \rm v== 0.1 m/sec[/tex]

Hence the velocity of the cart will be 0.1 m/sec.

To learn more about the law of conservation of momentum refer;

https://brainly.com/question/1113396

Answer:

3.3 s

Explanation:

From the question given above, the following data were obtained:

Initial velocity (u) = 12 m/s

Height of tower (h₁) = 15 m

Total time (T) to reach the ground =?

Next, we shall determine the time taken to reach the maximum height from the tower. This can be obtained as follow:

Initial velocity (u) = 12 m/s

Final velocity (v) = 0 m/s (at maximum height)

Acceleration due to gravity (g) = 10 m/s²

Time (t₁) to reach the maximum height from tower =?

v = u – gt₁ (ball is going against gravity)

0 = 12 – 10t₁

Rearrange

10t₁ = 12

Divide both side by 10

t₁ = 12/ 10

t₁ = 1.2 s

Next, we shall determine the maximum height reached by the ball from the tower.

Initial velocity (u) = 12 m/s

Final velocity (v) = 0 m/s (at maximum height)

Acceleration due to gravity (g) = 10 m/s²

Maximum height from the tower (h₂) =?

v² = u² – 2gh₂

0² = 12² – 2 × 10 × h₂

0 = 144 – 20h₂

Rearrange

20h₂ = 144

Divide both side by 20

h₂ = 144 / 20

h₂ = 7.2 m

Next, we shall determine the maximum height from the ground. This can be obtained as follow:

Height of tower (h₁) = 15 m

Maximum height from the tower (h₂) = 7.2 m

Maximum height from the ground (H) =?

H = h₁ + h₂

H = 15 + 7.2

H = 22.2 m

Next, we shall determine the time taken for ball to get to the ground from the maximum height. This can be obtained as follow:

Acceleration due to gravity (g) = 10 m/s²

Maximum height from the ground (H) = 22.2 m

Time (t₂) taken for ball to get to the ground from the maximum height =?

H = ½gt₂²

22.2 = ½ × 10 × t₂²

22.2 = 5 × t₂²

Divide both side by 5

t₂² = 22.2 / 5

t₂² = 4.44

Take the square root of both side

t₂ = √4.44

t₂ = 2.1 s

Finally, we shall determine the time taken for the ball to get to the ground. This can be obtained as follow:

Time (t₁) to reach the maximum height from tower = 1.2 s

Time (t₂) taken for ball to get to the ground from the maximum height = 2.1 s

Time (T) taken for the ball to get to the ground =?

T = t₁ + t₂

T = 1.2 + 2.1

T = 3.3 s

Therefore, it will take the ball 3.3 s to get to the ground.

Answer:

True

Newton's Rainbow. In the 1660s, English physicist and mathematician Isaac Newton began a series of experiments with sunlight and prisms. He demonstrated that clear white light was composed of seven visible colors.

Explanation:

Hope it helps

Answer:

The force applied to any falling object would be gravity. An object cannot fall if there is not gravity; it would simply float.

Answer:

Distance: 21km

Displacement: ~16.76km

Answer:

14 m/s^2

Explanation:

We have to use the equation F=ma because the question is a Newton's second law question.

First, list known values

F (force) = 70 N

m (mass) = 5 kg

a (acceleration) = ? (we have to solve for this)

Second, plug in known values into equation.

F=ma

70=5a

Third, solve. To solve this all you have to do is divide both sides by 5

70/5=5/5a

Fourth, your answer will be 14 meters per second squared  (m/s^2)

I hope this answer helps and have a great day!

Answer:

We answer that before but I forgot

Answer:

directly proportional

Explanation:

The Beer-Lambert law states that the quantity of light absorbed by a substance dissolved in a fully transmitting solvent is directly proportional to the concentration of the substance and the path length of the light through the solution.

Answer:

needs to know direction

Answer:

Net torque in positive direction:

Fz = -450 * cos 30 deg * 1.5 = -585 N-M

Fz = 200 * 3.5 = 700 N-M

Net F = 115 N-M

Torque is generally defined as L = R X F

X cross Y = Z     normal coordinate system

Note that Z will be out of the page giving the positive value for the torque.