Magnetism is a Responses A power.power. B form of electricity.form of electricity. C force.force. D form of energy.

Explanation:

Memory loss in retrograde amnesia has long been held to be larger for recent periods than for remote periods, a pattern usually referred to as the Ribot gradient. One explanation for this gradient is consolidation of long-term memories. Several computational models of such a process have shown how consolidation can explain characteristics of amnesia, but they have not elucidated how consolidation must be envisaged. Here findings are reviewed that shed light on how consolidation may be implemented in the brain. Moreover, consolidation is contrasted with alternative theories of the Ribot gradient. Consolidation theory, multiple trace theory, and semantization can all handle some findings well but not others.

If the cloud is transparent, milky, thin layers, rain within the next 2 hours, then the cloud you are seeing is most likely a type of altocumulus cloud.

Altocumulus clouds are generally characterized by their white or gray color, and can sometimes appear milky or translucent. They often form in layers, and can be thin or thick depending on the conditions.

Altocumulus clouds are typically found at medium altitudes, between 6,500 and 20,000 feet and are often associated with unsettled weather conditions.

While they don't necessarily indicate that rain is imminent, altocumulus clouds can be a sign that a change in the weather is on the way.

Thus, if it is likely to rain in the next 2 hours, then the cloud must be altocumulus clouds.

Learn more about altocumulus clouds here: https://brainly.com/question/24293012

#SPJ1

Answer:

plz mark brainliest again lol :)

Explanation:

When you drop a ball from a greater height, it has more kinetic energy just before it hits the floor and stores more energy during the bounce—it dents farther as it comes to a stop.

Answer:

When you drop a ball from a greater height, there is more potential energy. When you release the ball, the potential energy turns into kinetic energy. When the ball bounces off the ground, the ball go upward and then it has more potential energy. Then when it goes down it has more kinetic energy. The ball keeps doing this until there is not enough potential energy left.

Explanation:

The right response is that identical twins have stronger correlations than fraternal twins do.

If there are several pizza truck in the region, each with its own distinctive jingle, we would learn them all by heart and associate each one with a certain pizza truck. Establishing a connection between two variables, in this case "jingle" and "distance of the truck" in this example, is exactly what correlational research involves.

A nonexperimental research method known as correlational analysis measures two variables and evaluates the statistical relationship (also known as the correlation) among them with little to no effort to control unrelated variables.

To know more about correlational visit:

brainly.com/question/29242930

#SPJ1

Kinematics is the study of motion of an object without considering the forces that caused the object to move.

Kinematics is a branch of mechanics, which is used to study about mechanical bodies or mechanical systems without the reference of the body's/system's physical properties or the forces acting on it.

Kinematics models different motion mathematically with the help of algebra. Therefore, it is referred as geometry of motion. The modelling is done to calculate the various factors of motion such as speed, acceleration etc.

Therefore, Kinematics is the study of motion of an object without considering the forces that caused the object to move.

To know more about Kinematics

https://brainly.com/question/28037202

#SPJ1

Answer: The depth of the ocean is 650 feets at the bottom of the sunlight zone.

The distance travelled by echo sound is given by the formula -

Speed = 2×distance/time

So, calculating the speed of sound from the formula using distance and time

Speed = 2×25/(1/100)

Speed = 50×1000

Speed of sound = 5000 feet/second

Now, calculating the distance or depth of ocean at the bottom of the sunlight zone -

Distance = (speed×time)/2

Distance = (5000×26/100)/2

Distance = 1300/2

Distance = 650 feets

Hence, the depth of ocean is 650 feets.

Learn more about echo -

brainly.com/question/19579065

Answer:

We can start by using the formula:

distance = speed x time

where distance is twice the depth of the ocean at the bottom of the Sunlight Zone (since the pulse travels down to the seafloor and then back up), speed is the speed of sound in water, and time is the round-trip time of the pulse.

The speed of sound in water is approximately 1,500 meters per second (or 4,921 feet per second).

Converting the round-trip time to seconds, we have:

26 seconds - 1 second = 25 seconds

Substituting the values into the formula:

2 x depth = 4,921 feet/second x 25 seconds

2 x depth = 123,025 feet

depth = 61,512.5 feet

Therefore, the ocean at the bottom of the Sunlight Zone is about 61,512.5 feet deep.

Answer:

the hot bulb will have high resistance to the flow of current. While the cold bulb will have a low resistance to the flow of current.

Explanation:

A conductor that does not obey Ohm's law is described as non - ohmic. An example is a filament lamp. It glows as the current passes through it.

How does the resistance of the light bulbs differ when the bulbs are cold and when the bulbs are hot ?

The resistance of the light bulbs increase gradually as its temperature is increased.

So, the hot bulb will have high resistance to the flow of current. While the cold bulb will have a low resistance to the flow of current.

Because the resistance of an impure metal wire is greater than the resistance of a pure metal wire of the same dimension.

Answer:

Explanation:

  a )

from lens makers formula

\(\frac{1}{f} =(\mu-1)(\frac{1}{r_1} -\frac{1}{r_2})\)

f is focal length , r₁ is radius of curvature of one face and r₂ is radius of curvature of second face

putting the values

\(\frac{1}{1.8} =(1.38-1)(\frac{1}{.5} -\frac{1}{r_2})\)

1.462 = 2 - 1 / r₂

1 / r₂ = .538

r₂ = 1.86 cm .

= 18.6 mm .

b )

object distance u = 25 cm

focal length of convex lens  f  = 1.8 cm

image distance  v   = ?

lens formula

\(\frac{1}{v} - \frac{1}{u} = \frac{1}{f}\)

\(\frac{1}{v} - \frac{1}{-25} = \frac{1}{1.8}\)

\(\frac{1}{v} = \frac{1}{1.8} -\frac{1}{25}\)

.5555 - .04

= .515

v = 1.94 cm

c )

magnification = v / u

= 1.94 / 25

= .0776

size of image = .0776 x size of object

= .0776 x 10 mm

= .776 mm

It will be a real image and it will be inverted.

Answer:

40m/s

Explanation:

144km/h

1km=1000m

1hr=3600secs

144×1000/3600=

40m/s

Answer:

the ratio of Hank's mass to Harry's mass is 0.7937 or [ 0.7937 : 1

Explanation:

Given the data in the question;

Hank and Harry are two ice skaters, since both are on top of ice, we assume that friction is negligible.

We know that from Newton's Second Law;

Force = mass × Acceleration

F = ma

Since they hold on to opposite ends of the same rope. They have the same magnitude of force |F|, which is the same as the tension in the rope.

Now,

Mass\(_{Hank\) × Acceleration\(_{Hank\) = Mass\(_{Henry\) × Acceleration\(_{Henry\)

so

Mass\(_{Hank\) /  Mass\(_{Henry\) = Acceleration\(_{Henry\) / Acceleration\(_{Hank\)

given that; magnitude of Hank's acceleration is 1.26 times greater than the magnitude of Harry's acceleration,

Mass\(_{Hank\) /  Mass\(_{Henry\) = 1 / 1.26

Mass\(_{Hank\) /  Mass\(_{Henry\) = 0.7937 or [ 0.7937 : 1 ]

Therefore, the ratio of Hank's mass to Harry's mass is 0.7937 or [ 0.7937 : 1 ]

It would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.

1. The decay rate of a radioactive isotope is proportional to the number of radioactive atoms present in the sample at any given time.

2. The decay rate can be expressed as a function of time using the formula: R(t) = R₀ * \(e^{(-\lambda t\)), where R(t) is the decay rate at time t, R₀ is the initial decay rate, λ is the decay constant, and e is the base of the natural logarithm.

3. The half-life of a radioactive isotope is the time it takes for half of the radioactive atoms in a sample to decay. In this case, the half-life is given as 210 days.

4. Using the half-life, we can find the decay constant (λ) using the formula: λ = ln(2) / T₁/₂, where ln(2) is the natural logarithm of 2 and T₁/₂ is the half-life.

5. Substituting the given half-life into the formula, we have: λ = ln(2) / 210.

6. Now, we need to find the time it takes for the decay rate to fall to 0.58 of its initial rate. Let's call this time "t".

7. Using the formula for the decay rate, we can write: 0.58 * R₀ = R₀ * e^(-λt).

8. Simplifying the equation, we get: 0.58 = \(e^{(-\lambda t\)).

9. Taking the natural logarithm of both sides, we have: ln(0.58) = -λt.

10. Substituting the value of λ from step 5, we get: ln(0.58) = -(ln(2) / 210) * t.

11. Solving for t, we have: t = (ln(0.58) * 210) / ln(2).

12. Evaluating the expression, we find: t ≈ 546.

13. Therefore, it would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.

For more such questions on decay rate, click on:

https://brainly.com/question/27542728

#SPJ8

Answer:

27

Explanation:

Answer:

Explanation:

what do you really need help with

The initial temperature of the water was 0°C and the original temperature of the ice was -78.8°C.

First, we need to determine how much heat was transferred from the water to the ice to melt the ice and raise its temperature to 0°C.

The heat is required to melt the ice will be;

Q₁ = m_ice x Lf

where m_ice is the mass of the ice and\(L_{f}\) is the latent heat of fusion of ice.

Q₁ = 1.0 kg x 3.3 x 10⁵ J/kg

= 3.3 x 10⁵ J

The heat required to raise the temperature of the melted ice from -x°C to 0°C is;

Q₂ = m_ice x c_ice x ΔT

where c_ice is the specific heat capacity of ice and ΔT is the change in temperature.

Q₂ = 1.0 kg x 2093 J/kg.°C x (0 - (-x))°C

= 2093x J

The heat lost by the water will be equal to the heat gained by the ice;

Q₁ + Q₂ = m_water x Cw x ΔT

where m_water is the mass of the water and Cw is the specific heat capacity of water.

3.3 x 10⁵ J + 2093x J = 1.0 kg x 4186 J/kg.°C x (0 - T)°C

Solving for T, we get;

T = -[(3.3 x 10⁵ J + 2093x J)/(4186 J/kg.°C)]

= -78.8°C

Therefore, the original temperature of the ice was -78.8°C.

To know more about latent heat of fusion here

https://brainly.com/question/10081092

#SPJ1

The head loss doubles when the average velocity is doubled.

The vector quantity velocity (v), denoted by equation v = s/t, quantifies dislocation (or shift in position, s), over change in time (t).

Velocity is the pace and direction of the an object's movement, whereas speed is the timekeeping at which an object is travelling along a path.In other words, velocity is a vector, whereas speed is indeed a scalar value.

To know more about velocity visit:

https://brainly.com/question/18084516

#SPJ4

Answer:

Magnitude of gravitational force between this planet and its moon: approximately \(1.37 \times 10^{20}\; \rm N\).

Acceleration of this moon towards the planet: approximately \(5.49 \times 10^{-3}\; \rm m \cdot s^{-2}\).

Acceleration of this planet towards its moon: approximately \(2.29 \times 10^{-5}\; \rm m \cdot s^{-2}\).

Explanation:

Look up the gravitational constant, \(G\):

\(G \approx 6.67 \times 10^{-11}\; \rm m^3\cdot kg^{-1} \cdot s^{-2}\).

Assume that both this planet and its moon are spheres of uniform density. When studying the gravitational interaction between this planet and its moon, this assumption allows them to be considered as two point masses.

The formula for the size of gravitational force between two point masses \(m_1\) and \(m_2\) with a distance of \(r\) in between is:

\(\displaystyle F = \frac{G \cdot m_1 \cdot m_2}{r^2}\),

where \(G\) is the gravitational constant.

Let \(m_1\) and \(m_2\) denote the mass of this planet and its moon, respectively.

Calculate the size of gravitational force between this planet and its moon:

\(\begin{aligned} F &= \frac{G \cdot m_1 \cdot m_2}{r^2} \\ &\approx \frac{6.67 \times 10^{-11}\; \rm m^3 \cdot kg^{-1} \cdot s^{-2} \times 6.00 \times 10^{24}\; \rm kg \times 2.50 \times 10^{22}\; \rm kg}{{\left(2.70 \times 10^{8}\; \rm m\right)}^2} \\ &\approx 1.37 \times 10^{20}\; \rm N\end{aligned}\).

Assume that other than the gravitational force between this planet and its moon, all other forces (e.g., gravitational force between this planet and the star) are negligible. The magnitude of the net force on the planet and on the moon should both be approximately \(1.37 \times 10^{20}\; \rm N\).

Apply Newton's Second Law of motion to find the acceleration of this planet and its moon:

\(\displaystyle \text{acceleration} = \frac{\text{net force}}{\text{mass}}\).

For this moon:

\(\displaystyle \frac{1.37 \times 10^{20}\; \rm N}{2.50 \times 10^{22}\; \rm kg} \approx 5.49\times 10^{-3}\; \rm m \cdot s^{-2}\).

For this planet:

\(\displaystyle \frac{1.37 \times 10^{20}\; \rm N}{6.00 \times 10^{24}\; \rm kg} \approx 2.29 \times 10^{-5}\; \rm m \cdot s^{-2}\).

Answer:

c = 115.92 q/g C

Explanation:

0.016 kg = 16 grams

q = Joules

m = mass (g)

t = (final temp. - initial temp)

c = specific heat

c = (1086.75 joules) / (175 C - 25 C) (16 g)

c = 115.92 q/g C

If the impulse is strong enough and lasts for a sufficient amount of time, the go-kart will eventually come to a stop.

Option A is correct.

impulse is described as the integral of a force, F, over the time interval, t, for which it acts. Since force is a vector quantity, impulse is also a vector quantity.

If the force is insufficient to stop the go-kart entirely, it will slow down but continue to move. The force and duration of the impulse, along with the mass and speed of the go-kart, will all affect how much deceleration occurs.

Given that momentum plus impulse equals zero, the go-kart's change in momentum as a result of the impulse will be equal in amount but will move in the opposite direction of its original momentum.

As a result, the go-kart's final momentum will be zero, suggesting that it has either stopped or is travelling very slowly.

Learn more about impulse at: https://brainly.com/question/229647

#SPJ1

Stress = Force / Area

Stress required = 3,200 N/m^2

Area = side ^2 = 1.5^2 = 2.25 m^2

Force = 4,500 N

Replace with the values given:

S = 4,500/2.25 = 2000 N/m^2 ( less than 3,200)

Correct answer:

NO, because it was able only to withstand a stress of 2000 N/m^2

The magnetic force per unit length of the wire is (C) (0.49i - 0.51j - 1.37k) N/m.

To calculate the magnetic force per unit length of the wire, we can use the formula:

F = I * (L x B),

where F is the force, I is the current, L is the length vector of the wire, and B is the magnetic field.

Given:

Current, I = 3A

Length vector, L = √√3 * (i + j + k)

Magnetic field, B = 0.75i + 0.4k

Let's calculate the cross product of L and B:

L x B = | i j k |

|√√3 √√3 √√3|

|0.75 0 0.4|

To evaluate this cross product, we calculate the determinants:

(i) component: (√√3 * 0 - √√3 * 0.4) = -0.4√√3

(j) component: (-√√3 * 0.75 - √√3 * 0) = -0.75√√3

(k) component: (√√3 * 0.75 - √√3 * 0) = 0.75√√3

Now, multiply the cross product by the current:

F = 3A * (-0.4√√3i - 0.75√√3j + 0.75√√3k)

Simplifying this expression gives:

F = (-1.2√√3i - 2.25√√3j + 2.25√√3k) N

Therefore, the magnetic force per unit length of the wire is approximately (-1.2√√3i - 2.25√√3j + 2.25√√3k) N/m.

Comparing the given answer options, the closest match is C. (0.49i - 0.51j - 1.37k) N/m.

for more such questions on force

https://brainly.com/question/12785175

#SPJ11

Block y will experience a stronger pull from gravity and fall more quickly than block x since it has more mass than block x is 29.4 md

To complete this task, we will apply Newton's second law. Assume that a block with mass m is moving up.

T-W₁ = m a

W₃ - T = M a

w₃ - w₁ = (m + M) a

g = a = (3m - m) / (3m + m)

a = 2/4 g

a = ½ g

The blocks move at a pace of

v² = v₀² + 2 ½ g x

v = √ g x

b) As work is a scalar, it adds to other quantities.

luminous blocks

W1 = W d = mg

d = -a 3 m hefty block

W2 = 3m g d = W d

the entire project is

W = W₁ + W₂

W = 2 m g d

c) When all external pressures are applied to the centre of mass, they relate to it being

a = ½ g

T = 2m1m2g/(m2 + m1)

= 2x mx3x3mg/ 4m

= 14.7 m

Work done in moving by distance by tension on both masses d

= 2 x 14.7 m x d ( 2 x force x displacement ) ( 2 x force x displacement )

= 29.4 md .

Learn more about blocks here

https://brainly.com/question/16303002

#SPJ1

The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)

The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.

This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.

Learn about electron here https://brainly.com/question/13998346

#SPJ1

Answer:

Carbon atoms are made up of 6 protons, 6 electrons, and 6 neutrons, whereas Oxygen atoms are made of 8 protons, 8 neutrons, and 8 electrons.

Explanation:

This may not sound like a big difference at the atomic level, but it is responsible for all of the differences between Oxygen and Carbon.

Answer:

Δp = -1.3 kg m/s

Impulse on the ball = Δp = -1.3 kg m/s

Impulse on the racket = 1.3 kg m/s

Explanation:

The change in momentum of the ball can be calculated as

Where m is the mass of the tennis ball of 0.05 kg, vf is the final velocity and vi is the initial velocity. Since the ball rebound in the opposite direction, we will replace vf = -16 m/s and vi = 10 m/s

Replacing the values, we get

Therefore, the change in momentum of the ball is -1.3 kg m/s.

Then, the impulse exerted on the ball is equal to the change in momentum, so

Impulse on the ball = Δp = -1.3 kg m/s

Finally, the impulse exerted on the racket is equal to the impulse of the ball but with the opposite sign, so

Impulse on the racket = 1.3 kg m/s

Answer:

15.83 KW

Explanation:

Losing heat at a rate = 60000btu/h

Gaining heat at a rate = 6,000btu/h

The difference in heat levels

= 60000btu/h - 6000btu/h

= 54000btu/h

So we need to convert 54000btu/h to KW

1kw = 3412.142btu

? = 54000btu

We cross multiply

54000btu x 1kw = ?3412.142btu

So we divide through by 3412.142 to get the unknown

54000/3412.142

= 15.83kw

So we can conclude that 15.83kw is the required power of this heater to keep the house at a constant temperature

Answer:

Below

Explanation:

Momentum = m v

                    = 18 kg * 20 m/s =  360 kg m/s

Answer:

Explanation:

½(75)v² = ½(0.008)390²

        v² = (0.008)390²/75

        v² = 16.224

         v = 4.027...

         v = 4.0 m/s

Answer:

C. 39 m/s

Explanation:

First we need to calculate the total force required to move the train along the inclined plane. So, it is clear that the work done will be equal to the component of the weight that is parallel to the inclined plane, because there is no frictional force present:

Force = F = mg Sin θ

where,

m = mass of train = 3.3 x 10⁶ kg

g = 9.8 m/s²

θ = Angle of Inclination = 0.64°

Therefore,

F = (3.3 x 10⁶ kg)(9.8 m/s²)Sin 0.64°

F = 3.612 x 10⁵ N

Now, the formula for power is:

P = FV

V = P/F

where,

V = Velocity of Train = ?

P = Power of Engine = 14 MW = 1.4 x 10⁷ W

Therefore,

V = 1.4 x 10⁷ W/3.612 x 10⁵ N

V = 38.75 m/s

which is approximately equal to:

C. 39 m/s

The speed of train is 39 m/s. Hence, option (C) is correct.

Given data:

The mass of train is, \(m = 3.3 \times 10^{6} \;\rm kg\).

The angle of inclination is, \(\theta = 0.64^ {\circ}\).

The useful power output value is, \(P= 14 \;\rm MW = 14 \times 10^{6} \;\rm W\).

The work done will be equal to the component of the weight that is parallel to the inclined plane, because there is no frictional force present. So, the total force required to move the train along the inclined plane is given as,

\(F = mg sin \theta\\\\F = 3.3 \times 10^{6} \times 9.8 \times sin0.64\\\\F = 361233.75 \;\rm N\)

Now, use the formula of the power to obtain the value of speed as,

\(P = F \times v\\\\14 \times 10^{6} =361233.75 \times v\\\\v \approx 38.75 \;\rm m/s\)

Thus, the speed of train is 39 m/s. Hence, option (C) is correct.

Learn more about the power output here:

https://brainly.com/question/22285866