James has a mass of 98 kg and Basma has a mass of 59 kg. James is running at 3.0 m/s, while Basma is running at 4.0 m/s.
a. Who has the most momentum? Show how you arrived at your answer.

b. Basma approaches a road, so she stops quickly. It takes her 2.6 seconds to stop. What is the resultant force acting on her?

c. James also stops for the road. If he were to have the same resultant force acting on him, how long would it take for him to stop?

Answer:

The direction in which they rotate is determined by the hemisphere in which they are located. The main overall global wind patterns, the rotation of the Earth, and the shape of ocean basins are the three major factors that decide surface currents.

Oceanic factors are Tempature, salinity, density, pressure gradient and melting of ice. Atsmopheric factors are atsmopheric pressure, winds, rainfall, evaporation and insolation

The average force necessary to stop a hammer having momentum of 25 NS , in 0.05 second is 500N.

What is Momentum?

Momentum is the product of a particle's mass and velocity. Being a vector quantity, momentum possesses both magnitude and direction. According to Isaac Newton's second equation of motion, the force acting on the particle equals the time rate of change of momentum. The rate of change of a body's momentum is equal to the net force exerted on it, according to Newton's second law of motion. Regardless of the frame of reference, momentum is a conserved quantity in any inertial frame, which means that if an enclosed system is not subject to outside influences, its total linear momentum remains constant. Additionally, momentum is preserved in general relativity, electrodynamics, quantum mechanics, quantum field theory, and special relativity (using a modified formula). It is a manifestation of translational symmetry, one of the basic symmetries of space and time.

Force is given by Time/Impulse

​= 0.05/25

​ =500N

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Answer:

1). average velocity= displacement/time

= here displacement is zero

= 0/1

= 0 m/s

2). average speed= total distance/time

=2πr/1

=(2×22/7×5/10)/1

22/7

3.14 km/h

hope it helps you

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Explanation:

Answer:

\(\sf \fbox{speed = 3.14 kmph}\)

Explanation:

Given:

Radius of circular field (r) = 0.5 Km

Time taken to complete one round of field (t)= 1 hour

To find:

Average speed for the whole journey=?

Solution:

To find the average speed we will have to find the actual distance covered in given time, & the actual distance covered would be equal to the

\( \sf \: perimeter \: of \: circular \: field = 2 \pi r \\ \sf 2 \pi r = 2 \times 3.14 \times 0.5 = 3.14 \: km\)

Distance covered in 1 hour is 3.14 km,

\(\small \sf Average \: speed = \frac{Distance}{Time} = \frac{3.14}{1} \\ \small \sf \fbox{speed = 3.14 kmph}\)

\( \small\sf \: Thanks \: for \: joining \: brainly \: community! \)

According to Newton's first law of motion, the ball also moves with train .

According to Newton's first law of motion "An object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force".

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Answer:

ya daddy is my zaddy

Explanation:

The period and frequency of the motion is 1.33 second and 0.75 Hz respectively.

To solve this problem, we will use the formula for the period of simple harmonic motion. The period is the time taken for the object to complete one full oscillation. In this case, the object is the small cart on the frictionless track. We can use the following formula to calculate the period of the cart:

T=2L/v

where T is the period of the motion, L is the length of the track, and v is the speed of the cart.

In this case, L = 0.5 m and v = 0.75 m/s. Thus,

T=2(0.5 m)/(0.75 m/s)

T=1.33 s

The period of the motion is 1.33 seconds.

To find the frequency of the motion, we use the formula:

f=1/T

T=1.33 s

f=1/1.33

f=0.75 Hz

The frequency of the motion is 0.75 Hz.

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A sound wave produced by a clock 515 m away is heard 1.50 sec later. The speed of sound in the air is 343.3 m/s.

The pattern of disruption brought on by energy moving away from the sound source is known as a sound wave. Longitudinal waves are what make up sound. This indicates that the direction of energy wave propagation and the particle vibrational propagation are parallel. The atoms oscillate when they are put into vibration. A high-pressure and a low-pressure zone are created in the medium as a result of this constant back and forth action. Compressions and rarefactions, respectively, are terms used to describe these high- and low-pressure zones. The sound waves go from one medium to another as a result of these regions being transmitted to the surrounding media.

As we know that

Speed = Distance ÷ time

So, here speed be 515 m

And, the time is 1.50 seconds

So, the speed of the sound is

= 515 m ÷ 1.50 seconds

= 343.3 m/s

hence, the speed of the sound in the air is 343.3 m/s

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Answer: (c) 2000 N

Explanation:

Given Data :

▪ Initial velocity = zero ( body is at rest)

▪ Distance travelled = 100m

▪ Final kinetic energy = 200000J

To Find :

▪ Resultant force acting on the car.

Therefore:

W = F × d = ΔK ----------------- eq 1.

where,

W = work done

F = applied force

d = distance

ΔK = change in kinetic energy

Calculation :

→ F × d = Kf - Ki ----------------- eq 2.

Where:

Kf = Final kinetic energy = 200000

Ki = initial kinetic energy = 0

Substituting our values into the formula from equation (2)

→ F × 100 = 200000 - 0

→ F = 200000/100

→ F = 2000N

Answer: Inertia is an object’s resistance to a change in its motion. The greater the mass of an object, the greater the force needed to move it or stop it from moving.

Explanation: Hope this was helpful

The mass flow rate of water is 0.08757 kg/s

mCp (T2 - T1) = Q =w

m x 1.015 (360-315) = 4000

m = 4000/ 1.015 x 10^3 x (360-315)

m = 0.08757 kg/s

The density of water at 68°F / 20°C has a flow rate in our example of about 998 kg/m3. However, as the density of water varies with temperature, salinity, and pressure, use our water density calculator if you want to be extremely accurate. 30.58 lbs/s of mass flow were shown by the gadget.

By dividing the volume flow rate by the fluid’s mass density, one can determine the mass flow rate. The cross-sectional vector area, A, is multiplied by the flow velocity of the mass elements, v, to determine the volume flow rate.

The mass of a substance that moves per unit of time is known as the mass flow rate in physics and engineering.

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Answer:

76 cm southwest

Explanation:

The displacement of the mouse is 76.01 cm along south-west at an angle 57.35° with south direction.

In mechanics, displacement refers to the distance that a particle or body moves in a particular direction. Generally, point masses are used to describe particles and bodies. This means that, without sacrificing generality, bodies can be thought of as having all of their mass concentrated in a single mathematical point.

The mouse  scurries 41 cm south and then  takes a 90-degree turn and scurries 64 cm west.

Hence, magnitude of resultant displacement = √( 41² + 64²) cm = 76.01 cm.

The direction of displacement is along south-west with an angle with south direction= tan⁻¹(64/41) = 57.35°.

Hence, the displacement of the mouse is 76.01 cm along  south-west at an angle 57.35° with south direction.

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Answer: By studying seismic waves scientists have learned about the layers of the Earth.

Answer:

25 and 24

Explanation:

Answer:

Explanation:

The region where the magnetic field around a current-carrying solenoid is uniform is inside the solenoid.

Yes, some current will be induced in coil Q if coil P is moved towards Q. This is due to the phenomenon of electromagnetic induction. When a changing magnetic field passes through a coil, it induces an electromotive force (EMF) in the coil, causing a current to flow. The movement of coil P towards coil Q will result in a changing magnetic field, inducing a current in coil Q.

If coil P is moved away from coil Q, the magnetic field passing through coil Q will decrease, resulting in a change in the magnetic flux. This change in magnetic flux will induce an EMF in coil Q, causing a current to flow in the opposite direction compared to the previous scenario.

iii. Some methods of inducing current in a coil include:

Moving a magnet towards or away from the coil

Changing the magnetic field through the coil by varying the current in a nearby coil

Rotating a coil in a magnetic field

Changing the area of the coil within a magnetic field

Comparison between a permanent magnet and an electromagnet:

Permanent Magnet: It is made of materials that are naturally magnetic, such as iron, cobalt, or nickel. It has a constant magnetic field and does not require an external power source to generate the magnetic field.

Electromagnet: It is made by wrapping a current-carrying coil (usually around an iron core). The magnetic field of an electromagnet can be controlled by varying the current flowing through the coil. It requires an external power source (such as a battery) to generate the magnetic field.

(i) If the amount of current in the conductor increases, the displacement of the conductor will experience a greater force. According to the right-hand rule, the force experienced by a current-carrying conductor is directly proportional to the current and the magnetic field strength. Therefore, an increase in current will result in a larger force and may lead to a greater displacement of the conductor.

(ii) If the horse shoe magnet is replaced by a weak horse shoe magnet, the displacement of the conductor may be less pronounced. This is because a weaker magnetic field will exert a smaller force on the current-carrying conductor, resulting in a reduced displacement.

The description of the circular metallic loop above the wire AB is missing. Please provide additional information or context for a more accurate response.

Water freezes at 32 degrees Fahrenheit, 0 degrees Celsius, and 273.15 Kelvin, as we have all been taught.

Due to the salt in seawater, it freezes at a lower temperature than fresh water—approximately 28.4 degrees Fahrenheit. However, because only the water part of seawater freezes, a very little salt is present in the ice when it is formed.

The Kelvin scale, which measures temperatures in Kelvin, is frequently used by scientists, particularly those who investigate what happens to things when they get extremely cold (K). The steps on this scale are the same as those on the Celsius scale, however, they are moved downward. Water freezes at 273 K and boils at 373 K on this scale.

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The resistivity of the wire is 4.271 x 10^-8 Ωm.

To begin with, we need to use the formula for resistance:
R = ρ x L/A
where R is the resistance of the wire, ρ is the resistivity of the material, L is the length of the wire, and A is the cross-sectional area of the wire.
First, we need to calculate the cross-sectional area of the wire using its diameter:
d = 0.075 mm
r = d/2 = 0.0375 mm
A = π x r^2
A = π x (0.0375 mm)^2
A = 1.767 x 10^-6 m^2
Now, we can rearrange the formula for resistance to solve for resistivity:
ρ = RA/L
Substituting the given values:
R = 51 ω
A = 1.767 x 10^-6 m^2
L = 21 m

ρ = (51 ω x 1.767 x 10^-6 m^2) / 21 m
ρ = 4.271 x 10^-8 Ωm
Therefore, the resistivity of the wire is 4.271 x 10^-8 Ωm.

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When the temperature of a system increases, it means that energy has been transferred into the system as heat. The increase in temperature indicates that the particles within the system are vibrating faster, which requires energy to be transferred in to create that increased movement.

This energy is typically transferred in the form of heat, either from the surrounding environment or from some other source of energy. Therefore, option C - Energy is transferred into the system as heat - is the correct answer.As energy is transferred into the system, it is important to note that not all of the energy transferred may be in the form of heat.

Other forms of energy, such as light or sound, could also be transferred into the system and contribute to the overall energy of the system. However, the increase in temperature specifically indicates that energy has been transferred as heat.

There is not enough information in the question to determine the exact amount of energy transferred as heat. The specific amount of energy transferred would depend on a variety of factors, such as the initial temperature of the system, the properties of the materials within the system, and the energy source used to transfer the energy into the system.

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The answers to the questions are (a) 3.17J, (b) -13.75J, and (c) -16.7J, respectively.

The degree to which a person taking the appropriate, intellect, wisdom, insight, empathy, etc., as demonstrated by their actions or by some other mental product, such as a scholarly paper, argument, piece of art, etc. a substantial amount of such wisdom, understanding, etc. usually depths.

Utilize U=mgy, wherein y is evaluated in relation to a standard. Here, y is calculated relative towards the well's top edge, where y is set to zero.

(a) y = 1.2m: U=mgy = (0.27kg)(9.80m/s²)(1.2m)=+3.17J

(b) y = –5.2m: U=mgy = (0.27kg)(9.80m/s²)(–5.2m) = −13.75J

(c) ΔU = Uf − Ui = (−13.75J)−(3.17J) = −16.92 = −17J

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Type SE cable with an insulated neutral conductor is permitted for hooking up an electric range in a new branch circuit. Type SE cable with an insulated neutral conductor is permitted for hooking up an electric range in a new branch circuit.

Type SE Cable is primarily utilized for supplying power from a service drop to the meter base and from the meter base to the distribution panelboard; it is frequently utilized as a branch circuit as well.In an electric range branch circuit, a neutral wire is required to be run along with the two hot wires because of the 240V circuits. The NEC code specifies that the branch circuit supplying an electric range must have an ampacity rating of at least 40 amps. It should be equipped with a grounding conductor of a wire gauge equal to or larger than No. 10. The ampacity of the cable should not be less than the rated capacity of the electric range.For electric ranges, Type SE cable with an insulated neutral conductor can be used as long as the cable meets the above-mentioned requirements.

This type of cable is widely utilized in residential and commercial construction applications because it is simple to install and connect to the breaker panel. Furthermore, it provides a significant amount of insulation against heat and moisture, making it appropriate for use in high-temperature applications.The neutral conductor is insulated in the Type SE cable, which indicates that the metal sheath is utilized as a grounding conductor rather than the neutral conductor. This provides an additional layer of protection against electrical shock and fire, making it an excellent option for use in electric range branch circuits. For those who want to wire their electric range with Type SE cable, be sure to follow all of the applicable electrical codes.

Type SE cable with an insulated neutral conductor is permitted for hooking up an electric range in a new branch circuit, provided it meets certain specifications. The cable should have an ampacity rating of at least 40 amps and be equipped with a grounding conductor of a wire gauge equal to or larger than No. 10. The ampacity of the cable should not be less than the rated capacity of the electric range. Type SE cable is widely used in residential and commercial construction because it is simple to install and offers insulation against heat and moisture, making it appropriate for use in high-temperature applications. The neutral conductor is insulated in the Type SE cable, which provides an extra layer of protection against electrical shock and fire. If you want to wire your electric range with Type SE cable, make sure you follow all the relevant electrical codes.

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Answer:

3.6 s

Explanation:

100 km/hr =27.77 m/s

100/27.77=3.6 sec

Every tube in the load must have a companion right across in the rotor holder in order for the centrifuge to be balanced.

In many laboratories, centrifuges are employed to separate fluids, gases, or liquids according to their densities. Centrifuges are often employed in clinical and research facilities for the purification of cells, organelles, viruses, proteins, and nucleic acids.

The separation of different components of whole blood using a centrifuge is an example of its usage in a clinical environment. Serum or plasma is required for several tests and can be obtained by centrifugation.

A full blood sample is allowed to clot at room temperature in order to get serum. The clot is subsequently removed from the sample by centrifugation, leaving a serum supernatant behind.

Plasma, in contrast to serum, is made from whole blood that has not been allowed to clot; it contains serum as well as clotting factors. A full blood sample is taken in tubes that have been anticoagulant-treated in order to get plasma.

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Answer:

Explanation:

12

The strength of the pull of gravity between two objects is determined by several factors, including the mass of the objects and the distance between them.

According to Newton's law of universal gravitation, the force of gravity between two objects is directly proportional to their masses and inversely proportional to the square of the distance between them. Therefore, if the masses of the objects are increased, the force of gravity between them will also increase. Similarly, if the distance between the objects is increased, the force of gravity between them will decrease.

Other factors that can affect the strength of gravity include the distribution of mass within the objects and the presence of other nearby objects that may exert gravitational forces.

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In the drag race between Alison and Kevin, Alison wins by 1 second.Let's denote the total distance of the race as "d" and the constant accelerations of Alison and Kevin as "a" and "b," respectively. Since both drivers start from a standing position, their initial velocities are zero.

According to the given information, Alison covers the last 1/4 of the distance in 3 seconds, while Kevin covers the last 1/3 of the distance in 4 seconds.

Let's calculate the time it takes for Alison to cover the last 1/4 of the distance:

Since the distance covered is 1/4 of the total distance, we can write:

1/4 * d = (1/2) * a * (3^2)

d = 9a/2

Similarly, for Kevin, the time it takes to cover the last 1/3 of the distance is:

1/3 * d = (1/2) * b * (4^2)

d = 8b/3

Since both expressions represent the same total distance, we can equate them:

9a/2 = 8b/3

Simplifying the equation, we find:

27a = 16b

From this equation, we can see that Alison's acceleration is greater than Kevin's. Therefore, Alison reaches the finish line before Kevin, winning the race.

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Answer: new moon

Explanation:

The metals were transported to the core via o convection.Higher temperatures are preferable for condensing the heavier rock and metallic elements.

As the rocky planets formed, this concentration in metals close to the sun was incorporated into them.Iron and nickel, two readily available metals, moved toward the planet centers, where gravitational pull was highest, as the planetary systems developed.

Unlike other planets which lack a solid surface, terrestrial planets are composed of rocks or metals and have a hard surface.A few moons, a molten hard rock core, and landforms like cliffs, valleys, volcanoes, and craters are other characteristics of terrestrial planets.

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Answer:

Joule

Explanation:

the unit of work is Joule determined by the letter J.

Answer:

Explanation:

Joule is defined as the work done by a force of one newton causing a displacement of one meter. Sometimes, newton-metre (N-m) is also used for measuring work.

In a system in thermal and diffusive equilibrium, the average number of particles, mean square number of particles, and the standard deviation of N can be calculated using the grand canonical partition function and differentiating with respect to βμ.

a) In thermal and diffusive equilibrium, the chemical potential of the system is equal to that of the large reservoir. Using the grand canonical partition function, we can find the average number of particles in the system, represented by ⟨N⟩.
⟨N⟩ = -(∂lnΞ/∂βμ), where Ξ is the grand canonical partition function, β is the inverse temperature, and μ is the chemical potential.

b) To find the mean square number of particles, ⟨N²⟩, we differentiate the expression for ⟨N⟩ with respect to βμ:
⟨N²⟩ = (∂⟨N⟩/∂βμ).

c) The standard deviation of N, denoted as σ(N), is calculated by taking the square root of the variance, which is the difference between ⟨N²⟩ and the square of ⟨N⟩:
σ(N) = √(⟨N²⟩ - ⟨N⟩²).


In thermal and diffusive equilibrium, the average number of particles ⟨N⟩ is found using the grand canonical partition function. The mean square number of particles ⟨N²⟩ is obtained by differentiating ⟨N⟩ with respect to βμ. The standard deviation σ(N) is the square root of the variance, calculated as the difference between ⟨N²⟩ and ⟨N⟩².

In a system in thermal and diffusive equilibrium, the average number of particles, mean square number of particles, and the standard deviation of N can be calculated using the grand canonical partition function and differentiating with respect to βμ.

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