10. A force of 24 N was required to accelerate an object at a rate of 4 m/s-. What was the object's mass?


11It look 2.3 seconds for a car's velocity to change from 20 m/s to 35 m/s. The mass of the car was 1370 kg. What force was required to cause the acceleration? (Hint: First calculate the acceleration.)​

The expression for the capacitance per meter of a coaxial cable is C = \frac{2\pi\epsilon_0}{\ln(b/a)}

The capacitance per unit length of a coaxial cable with inner radius a and outer radius b is given by:

C = \frac{2\pi\epsilon_0}{\ln(b/a)}

where \epsilon_0 is the permittivity of free space.

To find the capacitance per meter of the coaxial cable, we divide this expression by the length of the cable, L:

C_{\text{per meter}} = \frac{C}{L} = \frac{2\pi\epsilon_0}{L\ln(b/a)}

Since the cable is assumed to have air as the insulating material between the cylinders, we can assume that \epsilon_r = 1 and \epsilon = \epsilon_0 (the permittivity of free space), which gives us the above expression.

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The magnetic flux through the triangle formed by the wires at t = 2.0 s is 0.001 Wb.

The induced EMF in the circuit at t = 3 s is 0.001 V.

Two conducting wires are perpendicular to each other. A third conducting wire starts at the vertex with a constant velocity v = -3 m/s. The magnitude of the magnetic field is 0.2 T.

i) Magnetic flux through the triangle formed by the wires at t = 2.0 s

The magnitude of the magnetic field is 0.2 T. The angle between the third wire and the other two wires is 90°. Using the formula for the magnetic flux through a surface, we can determine the magnetic flux through the triangle formed by the wires.

The formula is:ϕ = BAsinθ

where B is the magnetic field, A is the area of the surface, and θ is the angle between the surface normal and the magnetic field.

The triangle formed by the wires is a right-angled triangle with legs of length 0.1 m.

Therefore, the area of the triangle is:

A = (1/2) × 0.1 × 0.1A = 0.005 m²

The angle between the surface normal and the magnetic field is 90°.

Therefore, θ = 90°ϕ = BAsinθ= 0.2 × 0.005 × sin 90°= 0.001 Weber (Wb)

Therefore, the magnetic flux through the triangle formed by the wires at t = 2.0 s is 0.001 Wb.

ii) Induced EMF in the circuit at t = 3 s

The induced EMF in the circuit is given by Faraday's law of electromagnetic induction.

The formula is: EMF = - dϕ/dt

where EMF is the induced electromotive force, ϕ is the magnetic flux, and dt is the time interval over which the change in flux occurs.

To determine the induced EMF in the circuit at t = 3 s, we need to calculate the rate of change of magnetic flux between t = 2.0 s and t = 3 s.

The magnetic flux at t = 2.0 s is 0.001 Wb.

The magnetic flux at t = 3 s is given by:ϕ' = BAsinθ'= 0.2 × 0.005 × sin 180°= 0

Therefore, the rate of change of magnetic flux between t = 2.0 s and t = 3 s is:dϕ/dt = (ϕ' - ϕ) / (3 - 2)= (0 - 0.001) / 1= - 0.001 Wb/s

Therefore, the induced EMF in the circuit at t = 3 s is:EMF = - dϕ/dt= - (- 0.001)= 0.001 V

Thus, the induced EMF in the circuit at t = 3 s is 0.001 V.

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The term you are looking for is "chemical battery". Chemical batteries work by converting chemical energy into electrical energy through a series of chemical reactions. These reactions take place within the battery's cells, which are composed of two electrodes and an electrolyte.

When the battery is connected to a circuit, the chemical reactions produce an electrical current that can be used to power devices. Chemical batteries are widely used in many applications, including consumer electronics, electric vehicles, and renewable energy systems. They are a crucial component of our modern technological society, and ongoing research is focused on developing more efficient and sustainable battery technologies to meet growing energy demands.

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Answer:

Distance-0

Displacement-0

Explanation:

She spun in place and fell in her exact placement she didnt move and distance or displace any area

Mali loves to make herself dizzy, so she spins in place 7 times at a particular place, then the distance and displacement will be equal to zero.

The complete movement of an object, regardless of direction, is referred to as a distance. The amount of ground a thing travels from its starting point to its destination is also referred to as distance. A distance can alternatively be thought of as a scalar quantity, meaning that it is independent of an object's motion's direction.

The term "displacement" simply describes how an object's location has changed. For instance, when an object travels from point A to point B, displacement has taken place. A vector quantity with both magnitude and direction is displacement.

Hence, distance and displacement covered by Mali will be zero.

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Answer:

Here you go..

hope it helps..!

Explanation:

So since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force, so as the mass of either object increases, the force of gravitational attraction between them also increases.

The magnitude of force put out by the machine is of 3600 N.

What is Mechanical Advantage?

The mechanical advantage of a machine is defined as the force amplification of a machine by using certain mechanical devices.

Given data -

The value of the mechanical advantage is, MA = 4.5.

The magnitude of applied force is, F = 800 N.

Mathematically, the mechanical advantage is defined as the ratio of output force to the applied or input force. That is,

ME = F'/F

here,

F' is the output force.

Solving as,

4.5 = F'/800

F' = 4.5 × 800

F' = 3600 N

Thus, we can conclude that the magnitude of force put out by the machine is of 3600 N.

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Rahul should change the lengths of the vectors that point tangent to the circle so that each is the same length.

Uniform Circular Motion:

A uniform circular motion is a motion in a circle where the tangential speed of the object is constant.

In the motion map:

In this motion map,  the length of the vectors pointing tangent to the circle is not constant: this means that the speed is not constant. In order to have a uniform circular motion, the speed must be constant, therefore the lengths of the vectors that point tangent to the circle must be the same.

Thus, we can conclude that Rahul should change the lengths of the vectors that point tangent to the circle so that each is the same length.

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The ratio between centripetal force of satellite b and satellite a is 2vm²/ ve².

We need to know about centripetal force to solve this problem. When an object moves in a circular motion, the object is experiencing centripetal force. The magnitude of centripetal force is

Fc = m . v²/R

where Fc is the centripetal force, m is mass, v is velocity and R is the radius.

From the question, we know that

ma = m

mb = 2m

va = ve

vb = vm

ra = rb = r

Find the centripetal force ratio

Fcb / Fca = (mb . vb²/Rb) / (ma . va²/Ra)

Fcb / Fca = (2m . vm²/r) / (m . ve²/r)

Fcb / Fca = 2 . vm²/ ve²

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Answer:

Approx 50 atm

Explanation:

See graph below:

An equal amount of charge flows out of the opposite plate for every charge that enters and builds up on the first plate. The capacitor appears to be conducting current as a result.

In most metals, current is made up of moving electrons, therefore conventional current traveling downhill indicates true upward electron movement.

A capacitor is a device that can store electrical energy. It is made by taking two electrical conductors (items that allow electricity to flow through them) and separating them with an insulator (a substance that doesn't let electricity flow very well). The terms charging and discharging refer to the addition of electrical energy to and removal of energy from capacitors, respectively.

The capacitance of a capacitor determines how much electrical energy it can store. A capacitor's capacitance can be compared to a bucket's volume: a larger bucket can hold more water, while a larger capacitance allows a capacitor to store more electricity. There are three methods for increasing a capacitor's capacitance. The first is to make the plates larger. The plates could also be brought closer to one another. Making the dielectric as effective an insulator as you can is the third method. Diverse materials are used as dielectrics in capacitors. In transistor radios, a sizable variable capacitor with nothing but air in between its plates performs the tuning function.

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The correct answer is D, all of the above. According to the given options, a vehicle should not have a television, red or blue emergency lights, or any additional spotlights, cowl or fender lights, fog lights, or extra lights.

The restrictions mentioned in options A, B, and C are in place to ensure the safety and legality of vehicles on the road. Having a television in a vehicle can be distracting to the driver, potentially leading to accidents. Red and blue emergency lights are reserved exclusively for emergency and law enforcement vehicles to maintain their authority and visibility during urgent situations. Additional spotlights, cowl or fender lights, fog lights, or other extra lights beyond what is necessary for safe driving can be considered unnecessary and may cause confusion or distraction for other drivers.

It is important to adhere to these regulations to promote road safety and comply with the law. Violating these restrictions can result in penalties or fines. To learn more about vehicle regulations and safety measures, you can refer to your local traffic laws and regulations.

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Answer:

Explanation:

Force Mass * acceleration

F = ma

a = F/m

Sum of force = 16.3N - 15.8N = 0.5N

Mass = 0.62kg

Substitute

a = 0.5/ * 0.62

a = 0.81m/s²

The acceleration of the toy is 0.81m/s²

Answer:

D.

Explanation:

Specifically, Special Relativity showed us that space and time are not independent of one another but can be mixed into each other and therefore must be considered as the same object, which we shall denote as space-time. The consequences of space/time mixing are: time dilation. and length contraction.

what the other person said

The map of the world temperature zones gives;

23. Zone A = The North Frigid zone

Zone B = The North Temperate zone

Zone C = The Torrid

Zone D = The South Temperate zone

Zone E = The South Frigid zone

24. Zone C, the Torrid zone

25. Zone C, the Torrid zone

26. The Torrid zone

23. The five temperature zones of the world based on the annual temperatures are;

The north frigid zone

The north temperate zone

The torrid zone (tropics)

The south temperate zone

The south frigid zone

Each of the five zones shown on the map are;

Zone A = The North Frigid zone

Zone B = The North Temperate zone

Zone C = The Torrid zone Tropics

Zone D = The South Temperate zone

Zone E = The South Frigid zone

24. The name of the temperature zone that includes the equator is; Zone C, the Torrid zone (The tropics).

The Equator is located around the horizontal line that runs around the center of the Earth at 0 ° latitude.

25. The zone that has the greatest amount of human habitable land mass is; Zone C, the Torrid zone, which covers 40% of the geographic surface of the Earth.

26. The zone that has the highest temperature all year round is the zone farthest from the north and south Frigid zone which is the Torrid zone

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Answer:

Explanation:

To determine the speed of the vehicle, we can use the Doppler effect equation:

Δf/f₀ = (v/c) * cos(θ)

Where:

Δf is the change in frequency (19.2 kHz),

f₀ is the initial frequency (92.4 GHz),

v is the velocity of the vehicle,

c is the speed of light (approximately 3.00 × 10^8 m/s),

θ is the angle between the direction of motion of the vehicle and the direction of the radar beam.

In this case, since we are assuming the radar beam is directed straight towards the vehicle, the angle θ is 0 degrees, and the cosine of 0 degrees is 1. Thus, the equation becomes:

Δf/f₀ = (v/c)

We can rearrange the equation to solve for v:

v = (Δf/f₀) * c

Substituting the given values:

v = (19.2 kHz / 92.4 GHz) * (3.00 × 10^8 m/s)

Calculating:

v ≈ 6.522 m/s

Therefore, the speed of the vehicle is approximately 6.522 m/s.

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Answer:

Earth science or geoscience includes all fields of natural science related to the planet Earth. This is a branch of science dealing with the physical and chemical constitution of the Earth and its atmosphere. Earth science can be considered to be a branch of planetary science, but with a much older history. Earth science encompasses four main branches of study, the lithosphere, the hydrosphere, the atmosphere, and the biosphere, each of which is further broken down into more specialized fields.

There are both reductionist and holistic approaches to Earth sciences. It is also the study of Earth and its neighbors in space. Some Earth scientists use their knowledge of the planet to locate and develop energy and mineral resources. Others study the impact of human activity on Earth's environment, and design methods to protect the planet. Some use their knowledge about earth processes such as volcanoes, earthquakes, and hurricanes to plan communities that will not expose people to these dangerous events.

The Earth sciences can include the study of geology, the lithosphere, and the large-scale structure of the Earth's interior, as well as the atmosphere, hydrosphere, and biosphere. Typically, Earth scientists use tools from geology, chronology, physics, chemistry, geography, biology, and mathematics to build a quantitative understanding of how the Earth works and evolves. Earth science affects our everyday lives. For example, meteorologists study the weather and watch for dangerous storms. Hydrologists study water and warn of floods. Seismologists study earthquakes and try to understand where they will strike. Geologists study rocks and help to locate useful minerals. Earth scientists often work in the field—perhaps climbing mountains, exploring the seabed, crawling through caves, or wading in swamps. They measure and collect samples (such as rocks or river water), then they record their findings on charts and maps.

Explanation:

The respective constants used for gravitational and electric fields are G and k respectively. Therefore, the correct option is B.

The respective constants used for gravitational and electric fields are described below:

The constant G is known as the universal gravitational constant, and it represents the proportionality constant between two masses for the gravitational force. The constant is also known as Newton's constant and is commonly used in physics equations. G is defined as the force of attraction between two objects of unit mass separated by a unit distance. The units for G are Nm²kg−².

The electric constant k is also known as Coulomb's constant. The constant is also commonly used in physics equations to represent the proportionality constant between two electric charges. K represents the magnitude of the electric force between two charges in vacuum or free space. The units for k are Nm²C−², where N is the Newton force, m is the meter, and C is the Coulomb charge.

Therefore, the correct option is B.

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(a) The torque on the flywheel is 117.6 N·m.

(b) The angular momentum of the flywheel after 2.5 s will depend on the rotational speed, which requires additional information.

(a) The torque on the flywheel can be calculated using the formula:

Torque = Force × Distance

The force acting on the flywheel is the weight of the load, which is given by:

Force = mass × gravity

Force = 2.0 kg × 9.8 m/s² = 19.6 N

The distance from the axis of rotation to the point where the force is applied is the radius of the flywheel, which is given as 50 cm or 0.5 m.

Torque = 19.6 N × 0.5 m = 9.8 N·m

Therefore, the torque on the flywheel is 9.8 N·m.

(b) To calculate the angular momentum after 2.5 seconds, we need to know the rotational speed of the flywheel. The angular momentum is given by:

Angular Momentum = Moment of Inertia × Angular Velocity

Since the moment of inertia is not given, we cannot calculate the angular momentum without additional information.

(a) The torque on the flywheel is 9.8 N·m.

(b) The calculation of the angular momentum after 2.5 seconds requires the knowledge of the rotational speed or the moment of inertia, which is not provided. Therefore, we cannot determine the exact value of the angular momentum without additional information.

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Answer:

C

Explanation:

The acceleration will be negative, as in the problem statement, the upwards direction is defined as positive (the object is shot upwards and has a positive velocity), so immediately, we can eliminate A and B.

You can then use the kinematics equation:

\(v=v_o+at\), where

a= -9.8 m/s^2 (acceleration due to gravity)

t= 4 s (time)

v\(_0\)= 20 m/s (initial speed)

when you solve, the final velocity is -19.2 m/s, so the velocity is negative (the object is on its way down).  

Answer:

14

Explanation:

the left top is protons

hope this helps :)

(i) Maximum tensile stress: (P * L * (d/2)) / ((π * d^4) / 64)

   Maximum compressive stress: - (P * L * (d/2)) / ((π * d^4) / 64)

(ii) Direct longitudinal stress due to compressive end-load: σ = P / (π * (d/2)^2)

(i) To derive the equation for the maximum longitudinal direct stresses due to the transverse concentrated load, we can use the bending equation for a cantilever beam:

σ = (M * y) / I

where σ is the stress, M is the bending moment, y is the distance from the neutral axis to the point of interest, and I is the moment of inertia of the cross section.

For a circular cross section, the moment of inertia is given by:

I = (π * d^4) / 64

where d is the diameter of the circular cross section.

The bending moment due to the transverse concentrated load is:

M = P * L

where P is the transverse concentrated load and L is the length of the cantilever beam.

Substituting these values into the stress equation, we get:

σ = (P * L * y) / ((π * d^4) / 64)

To calculate the maximum tensile and compressive values of the stress, we need to consider the extreme values of y. For a circular cross section, the maximum value of y is equal to half the diameter (d/2). Thus, we have:

Maximum tensile stress (σ_tensile) = (P * L * (d/2)) / ((π * d^4) / 64)

Maximum compressive stress (σ_compressive) = - (P * L * (d/2)) / ((π * d^4) / 64)

(ii) The direct longitudinal stress due to the compressive end-load can be calculated using the formula:

σ = P / (π * (d/2)^2)

Substituting the given values, we can calculate the numerical value of the direct longitudinal stress.

(iii) To plot the distribution of stress through the depth of the beam, we need to determine the stress at different depths. We can calculate the stress at various distances from the neutral axis using the stress formula:

σ = (M * y) / I

where M is the bending moment, y is the distance from the neutral axis, and I is the moment of inertia of the cross section.

(iv) By analyzing the plotted diagram of stress distribution, we can determine the location of the neutral axis with reference to the lower and upper surfaces of the beam cross section. The neutral axis is the line through the cross section where the stress is zero. It typically passes through the centroid of the cross section. By examining the stress distribution diagram, we can determine the position of the neutral axis relative to the cross section.

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Answer:

\(F=4.27N\)

Explanation:

From the question we are told that:

Current  \(I = 6.52 A\)

Angle \(\theta= 44.8 \textdegree\)

Magnetic field   \(B= 0.258 T.\)

Length \(l=3.61m\)

Generally the equation for  Magnetic force F is mathematically given by

 \(F=BIlsin\theta\)

Therefore

 \(F=0.258*6.52*3.61*sin 44.8\)

 \(F=4.27N\)

Answer:   1470 N

Explanation:   mass = 15

                   weight is the product of mass and force due to gravity

                     AS WE KNOW THAT

                        W = mG

                        W = 15 X 9.8

                         W =  1470 N

Answer:

You're answer is going to be 3.96

Explanation:

The height of the jumper can be modeled by h(x) = -0.046x2+ 0.364x, where h is the jumper's height in meters and x is the horizontal distance from the point of launch. a. At what horizontal distance from the point of launch does the maximum height occur? Round to 2 decimal places. b. What is the maximum height of the long jumper? Round to 2 decimal places. c.What is the length of the jump? Round to 1 decimal place

The net force on particle q2 can be calculated by finding the net electric force acting on it. The net electric force acting on a particle is the vector sum of the forces exerted by all the other charges on it.

The electric force between two charges q1 and q2 is given by Coulomb's law: F = k * (q1 * q2)/r^2, where k is Coulomb's constant, q1 and q2 are the charges, and r is the distance between them.

The force on particle q2 due to q1 will be:

F1 = k * (q1 * q2) / (0.980m)^2

The force on particle q2 due to q3 will be:

F2 = k * (q2 * q3) / (0.750m)^2

The net force acting on q2 will be the vector sum of F1 and F2.

Keep in mind, q1 and q3 have opposite charges, so they attract each other, while q2 has the same charge as q1, so they repel each other.

Note: The unit of charge is Coulomb (C), but in this problem you are given the charges in microCoulomb (uC) so you need to convert it to Coulomb.

Explanation:

ob 1 day

1day is the answer

Answer:

30s

Explanation:

Q = charge in C(coulombs)

I = current in A(amps)

t = time in s(seconds)

Q = I × t

t = Q/I

Substitute in the given values.

t = 450C/15A = 30

t = 30s

Hope this helps! ^^

The heater was switched on for 30 seconds to allow 450 C of charge to flow through it.

To find the time the heater was switched on, we can use the equation Q = It,

where Q represents the total charge in coulombs, I is the current in amperes, and t is the time in seconds.

Given that the current (I) is 15 A and the total charge (Q) is 450 C, we can rearrange the equation to solve for time (t):

t = Q / I

Substitute the values:

t = 450 C / 15 A

t = 30 seconds

Therefore, the heater was switched on for 30 seconds to allow 450 C of charge to flow through it.

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Answer:water

Explanation:

Water may be a nutrient that makes up 60% of our body weight. it's important in many functions, it's part of every cell in every tissue in the body.

Water carries other nutrients to all or any parts of the body, it carries waste out of the body and it helps to manage body temperature. When you run or play sports your body heats up pretty quickly.

Your body starts to sweat as a way to get rid of the heat. When the sweat evaporates on your skin your body and blood get cool. it's very important to replace the fluid that is lost by sweating so as not to become dehydrated.

If you get dehydrated the body cannot cool itself anymore and your performance will drop. Without enough water, whether you're exercising or sitting all day, you're at risk for dehydration which can be fatal

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