In a pleasant but unfamiliar setting, infants with a secure maternal attachment are most likely toA) act as though their mothers are of little importance to them.B) use their mothers as a base from which to explore the new surroundings.C) cling to their mothers and ignore the new surroundings.D) show hostility when their mothers approach them after a brief absence.

Answer:

Acceleration would be \(1.96\) times the initial value.

Explanation:

The vehicle is in a centripetal motion as it rounds the circular curve. Acceleration of the vehicle during the motion would be:

\(\displaystyle a = \frac{v^{2}}{r}\),

Where:

In this question, \(r\) stays the same since the vehicle is rounding the same curve. Acceleration of the vehicle would be proportional to the square of velocity.

The new velocity of the vehicle is \((70 / 50)\) times the original one. Hence, the new acceleration would be \((70 / 50)^{2} = 1.96\) times the original value.

11.The time at 75° East longitude would be 1 hour and 20 minutes behind. 12.The time at 135° degrees East longitude would be 4 hours ahead. and 13. the time in Lima, Peru (15° South latitude, 75° West longitude) would also be 9:30 AM.

At 2:00 AM at 90° East longitude, the time at 75° East longitude would be 1 hour and 20 minutes behind. This is because for every 15 degrees of longitude, there is a time difference of approximately 1 hour. Since the two longitudes in question have a difference of 15 degrees, we can divide this by 15 to calculate the time difference.

If it is 8:00 PM at 15° East longitude, the time at 135° East longitude would be 4 hours ahead. Similarly, for every 15 degrees of longitude, there is an approximate time difference of 1 hour. Since the two longitudes in question have a difference of 120 degrees, we can divide this by 15 to calculate the time difference.

There is a 7-hour difference** between 105° West longitude and the Prime Meridian (0° longitude). The Prime Meridian, passing through Greenwich, England, serves as the reference point for determining time zones. As one moves westward from the Prime Meridian, each 15 degrees of longitude corresponds to a time difference of approximately 1 hour. Therefore, the time at 105° West longitude would be 7 hours behind the time at the Prime Meridian.

If it is 9:30 AM in New York (41° North latitude, 75° West longitude), the time in Lima, Peru (15° South latitude, 75° West longitude) would also be 9:30 AM. The latitude does not affect the time difference between the two locations. However, since both locations have the same longitude (75° West), they would experience the same local time. The time difference between different latitudes is primarily significant for determining time zones rather than the actual time within a specific time zone.

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Answer:

the resistance of the wire is 1.4 x 10⁻³ ohms.

Explanation:

Given;

resistivity of the wire, ρ = 4.9 x 10⁻⁴ ohms.mm

cross sectional area of the wire, A = 0.7 mm²

length of wire, L = 2 mm

The resistance of the wire is calculated as follows;

\(R = \frac{\rho L}{A} \\\\R = \frac{4.9 \times 10^{-4} \times 2}{0.7} \\\\R = 1.4\times 10^{-3} \ ohms\)

Therefore, the resistance of the wire is 1.4 x 10⁻³ ohms.

The system is open, because there is a net force exerted on the block.

An individual strolling, a taking off baseball, a piece tumbling from a table and a charged molecule in an electric field are instances of dynamic energy at work. An item that isn't moving has zero motor energy.

The energy an item has as a result of motion is known as kinetic energy. A force must be applied to an item in order to accelerate it. We must put forth effort in order to apply a force. After the job is finished, energy is transferred to the item, which then moves at a new, constant speed.

According to question:

On graphing free body diagram of the problem

There is a force = mgsin(37°)

So, the it is a open system.

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Answer:

There must be an equal amount of each element on both sides of the equation. Hope this helps and please marks as the brainliest.

Explanation:

Answer:

The answer is D

Explanation:

Hope this helps!

Answer:

vibrates, and they carry energy from one place to another. Look at the sound wave and the water wave. vibrating electric charges and can travel through space where matter is not present. to particle, electromagnetic waves travel by transferring energy between vibrating electric and magnetic fields.

Answer:

a) 5.01 m/s

b) 3.28 m/s

c) 0.67 s

d) 0.45 m

e) 2.78 m

Explanation:

Answer:

a) 3.04 m/s

b) 3.7 m/s

c) 0.72 s

d) 0.36 m

e) 4.12 m

Explanation:

Hypervisors, guest machines, and host machines are important concepts in virtualization. A hypervisor is a software that allows multiple operating systems to run on a single hardware host machine.

Hypervisors are a type of virtualization software that allows multiple operating systems to run on a single hardware host machine. The host machine runs the hypervisor software, which creates virtual machines (VMs) that act as if they are independent machines running on their hardware.

The hypervisor acts as the main answer to maintain the operating systems and resource allocation.The guest machines, also known as virtual machines, are created by the hypervisor and are instances of a guest operating system that runs on the host machine.

Guest machines are isolated from each other, allowing different operating systems and applications to run without interfering with each other.

The host machine is the physical machine that runs the hypervisor software. It provides the necessary hardware resources, such as CPU, memory, and storage, to the guest machines.

The hypervisor manages the allocation of these resources to the guest machines based on their requirements.A diagram to illustrate this is as follows: [Insert diagram here]

Hypervisors, guest machines, and host machines are important concepts in virtualization. A hypervisor is a software that allows multiple operating systems to run on a single hardware host machine. The guest machines are virtual machines created by the hypervisor, which act as independent machines. The host machine is the physical machine that runs the hypervisor software and provides the necessary hardware resources to the guest machines. These concepts are important in understanding the virtualization technology and its benefits.

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Answer: it is actually B. :)

Explanation:

Noise can distort analog signals making them unreliable.

Noise can actually bury, distort or cause interference to the analog signal carrying the intelligent information.

Hence, the correct answer is B.

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Explanation:

electricity is the flow of electrical power or charge

Explanation:

the flow of current is called electricity

Answer: the answer is A.

Explanation:

brainliest please?

Answer:

A.

Cognition helps determine if a consequence is influential enough to control behavior.

Explanation:

This is right on edg. 2020

The two resistors in parallel behave like 3 ohms.

I = V / R

Current = 12/3 = 4 Amps

Answer:

Mass and kinetic energy have a positive relationship, which means that as mass increases, kinetic energy increases, if all other factors are held constant.

In this state, Kinetic energy is equal to half of the product mass and velocity. SI unit is joules. So it's if the mass is doubled then the kinetic energy also gets doubled.

Answer:

33 hours

Explanation:

7.5 + 6.5 = 13 + 1

14 + 10 = 24

9= 6+3

24 + 6 = 30

30+3= hours

This question involves the concepts of Newton's Second Law of Motion.

The acceleration of the bowling ball will be "0.67 m/s²".

According to Newton's Second Law of Motion, when an unbalanced force is applied on an object, it produces an acceleration in it, in the direction of the applied force. This acceleration is directly proportional to the force applied and inversely proportional to the mass of the object. Mathematically,

\(F=ma\\\\a=\frac{F}{m}\)

where,

Therefore,

\(a=\frac{6\ N}{9\ kg}\)

a = 0.67 m/s²

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A parallel capacitor's geometrical characteristics determine its capacitance. the separation of the plates. The capacitance reduces as the distance between the plates grows.

Farad, denoted by the letter F, is the SI unit for electrical capacitance. In large part, the unit bears the name of English physicist Micheal Faraday. The capacity of a body or thing to hold an electrical charge is often referred to as farad. The SI base units used to describe it are s4A2m-2kg-1.

They are effective at lessening voltage pulsation. The capacitor is charged in a parallel circuit when a positive voltage is applied, and it discharges when a low voltage is applied. While most electronic circuits use DC, the electricity that comes out is AC.

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"There is a negative charge on the surface of the cavity, and a positive charge on the outer surface of the conductor." Correct option is E.

Gauss' Law states that any additional charge on a conductor will be found on its surface.

The relationship between the internal charge and the surface's electric field is known as Gauss' Law.

Since there is no electric field within a conductor, any surface there will have a charge of zero.

Therefore, any charge on the conductor must be at the surface.

If a cavity were to be cut out of the conductor, neither an electric field nor any charge would exist in the area of the cavity.

Therefore, the hollow wouldn't have an electric field. No flux can enter the conductor since the electric field should be perpendicular to its surface and the internal electric field should be zero.

As a result, the conductor's exterior surface has a positive charge, whereas the surface of the cavity has a negative charge.

The given question is incomplete. The complete question is '(a) There is no charge on the surface of the cavity or the outer surface of the conductor.

(b) There is a positive charge on the surface of the cavity, but no charge on the outer surface of the conductor.

(c) There is a negative charge on the surface of the cavity, but no charge on the outer surface of the conductor.

(d) There is no charge on the surface of the cavity, but a positive charge on the outer surface of the conductor.

(e) There is a negative charge on the surface of the cavity, and a positive charge on the outer surface of the conductor.'

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Answer:

46°C

Explanation:

q = mCΔT

336,000 J = (20 kg) (4200 J/kg/°C) (50°C − T)

T = 46°C

Becky takes a shower, and he uses 20,000 g of water with specific heat of 4200 J/kg then the starting temperature of the water will be equal to 46 °C.

Specific heat is the amount of energy needed to raise a product's temperature by one degree Celsius per gram. Traditionally, the units of heat capacity are calorie or joules per gram per degree Celsius. The specific heat of water, for instance, is 1 calorie (or 4.186 joules) per gram per degree Celsius.

In the 18th century, the Scottish scientist Joseph Black noted that equivalent masses of various substances required varying quantities of heat to increase them across the same ambient temperature. Based on this discovery, he developed the theory of specific heat.

From the given data in the question,

q = mCΔT

Here ΔT is the change in the temperature.

336,000 J = (20 kg) × (4200) × (50 °C − T)

T = 46 °C

Therefore, the starting temperature of the water is 46 °C.

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Answer:

Explanation:

Explanation: total displacement =3√2m. and total distance covered=14m. I hope this is right and helps u.

The width of the slit is 0.212 mm.

The wavelength of light is defined as “The distance between the two successive crests or troughs of the light wave”.

We know that the distance between minima is given by :

                                       \(t = (m_{f} - m_{i} ) \alpha x/d\)

where, t = distance between minima

            \(\alpha =\) wavelength

            x = distance of screen

            d = width of slit

            \((m_{f} - m_{i} ) =\) difference between minima

Given, x = 40 cm = 0.4 m

           \(\alpha = 690 nm = 690 * 10^{-9} m\)

           t = 2.60 mm = \(2.60 * 10^{-3} m\)

           \((m_{f} - m_{i} ) =\) 3 -1 = 2

Putting these values in above equation we get d = 0.212 mm

So the width of the slit is 0.212 mm.

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Using this formula m=W/g, the mass of an object if its weight on earth is 1150N is 117.347 kg

Let mass of an object be m, weight be W and acceleration due to gravity is g.

From the formula m=W/g

mass m =?

weight w = 1150N

g=9.8 m/\(s^{2}\)

So,  the mass of an object if its weight on earth is 1150N will be calculated as:

m=1150/9.8

m=117.347 kg

Hence using the formula m=W/g, the mass of an object if its weight on earth is 1150N will be 117.347 kg.

This is in acceptance with Newton's laws of motion as well and thus calculated according to given formula.

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The amount of work required to move a proton from point A (50V) to point B (-50V) along the semicircular path is zero.

The work done on a charged particle moving in an electric field is given by the equation:

Work = qΔV,

where q is the charge of the particle and ΔV is the change in electric potential.

In this case, the charge of the proton is constant (q = 1.6 x 10^-19 C), and we are moving it from point A to point B along a semicircular path.

Since the electric potential is a scalar quantity, the change in electric potential (ΔV) between two points is independent of the path taken.

Since the work done is the product of the charge and the change in electric potential, and the change in electric potential is the same regardless of the path taken, the work done on the proton will be zero along the semicircular path.

No work is required to move the proton from point A (50V) to point B (-50V) along the semicircular path, as the change in electric potential is the same regardless of the path taken.

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Hi there!

Since we are dealing with such large distances, we can approximate.

Recall that the equation for speed is:

displacement / time = velocity

OR:

d/t = v

Begin by converting one hour to seconds:

1 hr  = 3600 sec

Now, we can solve for velocity:

(-2.0 × 10⁷) / 3600 = -5555.6 m/s ⇒ D: -5.55 × 10³ m/s

Power (P_total) ≈ 70 kW

Reactive power (Q_total) ≈ -16.27 kVAR

Apparent power (S_total) ≈ 71.13 kVA

Power factor (cos φ_total) ≈ 0.9832 (leading)

For load A:

Power (P_A) = 20 kW

Power factor (cos φ_A) = 0.6 lagging

For load B:

Power (P_B) = 50 kW

Power factor (cos φ_B) = 0.85 leading

1. Calculate the reactive power (Q_A) for load A:

Reactive power (Q_A) = P_A * tan(acos(cos φ_A))

                   = 20 kW * tan(acos(0.6))

                   ≈ 16.29 kVAR (kiloVolt-Ampere Reactive)

2. Calculate the reactive power (Q_B) for load B:

Reactive power (Q_B) = P_B * tan(acos(cos φ_B))

                   = 50 kW * tan(acos(0.85))

                   ≈ -32.56 kVAR (kiloVolt-Ampere Reactive) (Note: Negative sign due to leading power factor)

3. Calculate the apparent power (S_A) for load A:

Apparent power (S_A) = P_A / cos φ_A

                   = 20 kW / cos(acos(0.6))

                   ≈ 33.33 kVA (kiloVolt-Ampere)

4. Calculate the apparent power (S_B) for load B:

Apparent power (S_B) = P_B / cos φ_B

                   = 50 kW / cos(acos(0.85))

                   ≈ 58.82 kVA (kiloVolt-Ampere)

5. Calculate the total power (P_total) supplied by the source:

P_total = P_A + P_B

       = 20 kW + 50 kW

       = 70 kW (kiloWatt)

6. Calculate the total reactive power (Q_total) supplied by the source:

Q_total = Q_A + Q_B

       = 16.29 kVAR - 32.56 kVAR

       = -16.27 kVAR (Note: Negative sign indicates reactive power is being supplied)

7. Calculate the total apparent power (S_total) supplied by the source:

S_total = sqrt((P_total)^2 + (Q_total)^2)

       = sqrt((70 kVA)^2 + (-16.27 kVAR)^2)

       ≈ 71.13 kVA (Note: Magnitude of the apparent power)

8. Calculate the power factor (cos φ_total) seen by the source:

cos φ_total = P_total / S_total

           = 70 kW / 71.13 kVA

           ≈ 0.9832 (leading)

Therefore, the power, reactive power, and apparent power supplied by the source are:

Power (P_total) ≈ 70 kW

Reactive power (Q_total) ≈ -16.27 kVAR

Apparent power (S_total) ≈ 71.13 kVA

Power factor (cos φ_total) ≈ 0.9832 (leading)

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The degree mass of many different spiral galaxies close by after which takes a median. They add up all the observations at 21-cm wavelengths because the mass of hydrogen gas is some distance greater than the mass in all of the stars.

Astronomers have four simple techniques to degree the hundreds of galaxies and clusters: rotation curves, random velocities, X-ray emission, and gravitational lensing. Rotation curves: In astronomy, we often infer loads from orbits.

Because it's impossible to weigh a galaxy virtually by way of searching at it tons less when the observer occurs to be inner of it, as is the case with our Milky way researchers deduce a galaxy's mass by means of analyzing the motions of celestial gadgets as they dance across the host galaxy, led by using its gravitational pull.

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The tension in the rope is 527.6 N. The work done by the rope on the skier is 15,700 J.

To determine the tension in the rope, we need to consider the forces acting on the skier. The skier is being pulled up the slope, so the tension in the rope must be equal to the component of the gravitational force acting down the slope. Using trigonometry, we can calculate the component of the weight parallel to the slope:

Component of weight = weight * sin(angle)

                  = 53 kg * 9.8 m/s^2 * sin(15°)

                  ≈ 138.7 N

Therefore, the tension in the rope is equal to the component of the weight and is approximately 138.7 N.

To calculate the work done by the rope, we use the formula:

Work = force * distance * cos(angle)

Here, the force is the tension in the rope, the distance is 125 m, and the angle is 15°. Plugging in the values:

Work = 138.7 N * 125 m * cos(15°)

    ≈ 15,700 J

Hence, the work done by the rope on the skier is approximately 15,700 Joules.

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