Acceleration is proportional to mass. T or F

Answer:

Solution given:

Wight [W]=500N

gravity [g]=10m/s²

mass[m]=?

we have

W=mg

500=m*10

m=500/10

m=50kg

the mass of the truck is 50kg.

Answer:

yes it will

Explanation:

As the net torque on the see-saw  is not equal to zero, the see-saw in the given diagram will move.

The force that can cause an object to rotate along an axis is measured as torque. In linear kinematics, force is what drives an object's acceleration. Similar to this, an angular acceleration is brought on by torque.

As a result, torque can be thought of as the rotational counterpart to force.  Torque is referred to using a variety of terms, including moment and moment of force. The moment arm or lever arm is the measurement of the separation between the point of application of force and the axis of rotation.

The net torque on the see-saw = 3 N × 1.20m - 8 N × 0.50 m

= - 0.4 N-m.

As the net torque on the see-saw  is not equal to zero,  the see-saw move will move.

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Space heaters are the only application on the list where heat from electricity is the desired outcome. They are a convenient and efficient way to warm up a specific area or room, especially during cold weather.

The application where heat from electricity is a desired outcome is Space heater. Space heaters are designed to generate heat from electricity and warm up a specific area or room. They work by passing an electrical current through a resistive element, such as a coil of wire, which converts electrical energy into heat energy. The heat is then transferred to the surrounding air, warming up the room.

Electric clothes dryers, irons, toasters, and water pumps all use electricity to perform their respective functions, but heat is not the desired outcome. Electric clothes dryers use electricity to rotate a drum and create hot air to dry clothes. Irons use electricity to heat up a metal plate and smooth out wrinkles in clothes. Toasters use electricity to heat up metal wires and toast bread. Water pumps use electricity to circulate water through pipes or hoses.

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The force acting on a moving charge is known as the magnetic force. The force acting on the charge will be 3.75 N.

Magnetic fields only exert a force on a moving electric charge. A moving charge generates a magnetic field. With an increase in charge and magnetic field strength, this force rises.

when charges have higher velocities, the force is stronger. However, the magnetic force is always perpendicular to the velocity.

Mathematically the force exerted on the charge will be

F=qvBsinα

F= force acting on the charge

v = velocity of charge

q = charge

F=qvBsinα

F=2.5×10⁻⁶×5.0×10³×3.0×10²

F=37.5 N

Hence The force acting on the charge will be 3.75 N.

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F = q V B sinα

Where F is the force applied to a moving charge.

V = charge velocity

q stands for charge.

α = angle between V and B directions

As a result, the moving charge is subjected to a force of 3.75 Newton.

Answer:noo

Explanation:impossible

The height above the ground in feet of the ball can be represented by the equation h = ut+1/2at², where u in the initial speed in feet per second, the average rate of change of height in first few second will also be given by the same equation.

The ball thrown upward with an initial speed of u feet per second will attain a height of h feet.

Now, we know, from the equation of motion,

S = ut + 1/2at²

This can be rewritten for the height purpose,

h = ut + 1/2at²

Where,

h is the height in feet,

t is time in seconds,

u is the initial speed in feet per seconds,

a is the acceleration of the ball.

The average rate of change of height will also be given by the same equation. We just have to know that for how much amount of time we need to find the change rate.

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The first number (15) is 25% less than the second number (20).

For the first pair of numbers, 15 and 20, we can determine by what percent the second number is greater than the first by using the formula:
Percent increase = [(New value - Old value)/Old value] x 100
So, for this pair of numbers, we have:
Percent increase = [(20 - 15)/15] x 100 =

[5/15] x 100

= 33.33%
Therefore, the second number (20) is 33.33% greater than the first number (15).
To determine by what percent the first number is less than the second, we can use the same formula, but switch the values:
Percent decrease = [(Old value - New value)/New value] x 100
So, for this pair of numbers, we have:
Percent decrease = [(15 - 20)/20] x 100 =

[-5/20] x 100

= -25%
Therefore, the first number (15) is 25% less than the second number (20).

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It falls 9.8m far for the apple to drop from tree in 1.4sec.

Apple fall time t = 1.4 s

The free fall distance in time t is given by

d = 1/2at²

where a = g = 10 m/s² = free fall acceleration

calculation:

Using the above formula and the values ​​given, the distance the apple will fall free in 1.4 seconds is

d = 1/2(10)(1.4)²

= 9.8 m

Therefore the distance um the apple will fall is 9.8 m.

Isaac Newton formulated gravitational theory in 1665 or 1666 after watching an apple fall. An apple falling from a tree is an example of Straight-line motion because gravity causes it to fall vertically in a straight line.

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Answer:

\(1500 \: \mathrm{N}\)

Explanation:

The equation \(F=ma\) represents the force needed.

Plugging in \(m=250\) and \(a=6\: \mathrm{m/s^2}\), we find that the force needed to accelerate a 250 kg object at a rate of \(6 \: \mathrm{m/s^2}\) to be \(\fbox{$1500 \: \mathrm{N}$}\).

Answer:

c.water and calcium chloride

Explanation:

i took the test

Answer:

water and calcium chloride

Explanation:

The value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

When an object collides with another object, they exchange energy. For example, a baseball and bat collision or a car collision. When two objects collide, the force of the collision has to be equal on both sides of the collision according to Newton's Third Law. So, to find the value of force, we will apply the equation:

F = ΔP / ΔT

where F is the force, ΔP is the change in momentum, and ΔT is the time of collision. The equation represents the impulse momentum theorem.

Now, let's apply the given values to the above equation.

Final momentum (p2) = mass × final velocity (v2)

p2 = 0.15 kg × (-50 m/s)

p2 = -7.5 kg.m/s

Initial momentum (p1) = mass × initial velocity (v1)

p1 = 0.15 kg × (40 m/s)

p1 = 6 kg.m/s

Change in momentum (ΔP) = p2 - p1

ΔP = -7.5 kg.m/s - 6 kg.m/s

ΔP = -13.5 kg.m/s

Time of collision (ΔT) = 8.0 × 10³ s

Now, putting the values of ΔP and ΔT in the equation of impulse momentum theorem, we get:

F = ΔP / ΔT

F = -13.5 kg.m/s ÷ 8.0 × 10³ s

F = -1.7 × 10⁻³ N

Thus, the value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

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Answer:

Photons

Explanation:

I just know

Discrete packets of kinetic energy in light are called photons. Photons are fundamental particles of light and electromagnetic radiation. The correct answer is photons.

Photons are fundamental particles of light and electromagnetic radiation. They carry energy in discrete quantities, known as quanta or packets, and exhibit both wave-like and particle-like properties.

The energy of a photon is directly proportional to its frequency, and inversely proportional to its wavelength. When light interacts with matter, it can transfer its energy to the particles it interacts with, leading to various phenomena such as absorption, reflection, and emission.

Therefore, Discrete packets of kinetic energy in light are called photons.

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In a a camera equipped with a 55-mm-focal-length lens, what is the object distance if the image height equals the object height.The object is effectively located at an infinite distance from the camera lens.

To determine the object distance in this scenario, where the image height equals the object height, we can use the lens formula:

1/f = 1/d_o + 1/d_i

Where:

f is the focal length of the lens,

d_o is the object distance,

and d_i is the image distance.

Given that the focal length (f) is 55 mm, and the image height (h_i) equals the object height (h_o), we can assume that the image distance (d_i) is equal to the focal length (f) due to the nature of the scenario.

Substituting the known values into the lens formula, we have:

1/55 = 1/d_o + 1/55

Simplifying the equation, we get:

1/d_o = 1/55 - 1/55

1/d_o = 0

Since the equation results in 0, it implies that the object distance (d_o) is at infinity in this scenario. The object is effectively located at an infinite distance from the camera lens.

As for the distance between the object and the image on the film, it is not possible to determine it precisely without additional information, such as the specific type of camera and the positioning of the film plane relative to the lens. However, in typical camera setups, the image on the film is formed when the object is located at the focal point of the lens or at a significant distance from the lens, resulting in a sharp image on the film plane.

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Answer:

Work done by the bricklayer, W = 3.285 kJ

Therefore, the gravitational potential energy of the brick-Earth system =  3.285 kJ

Explanation:

Work done is the product of applied force and distance moved by the force.

The force on an object in the gravitational field is equal to the product of the mass of the object and acceleration due to gravity This force is the weight of the object or body. In lifting an object from a lower height to a higher one, the distance moved is equal to the increase in height.

Work done in lifting an object in a gravitational field = mgh

where m = mass of the object, g = acceleration due to gravity, h = height

From the question, m = 30.2 kg, g = 9.8 m/s², h = 11.1 m

Work done by the bricklayer = 30.2 * 9.8 * 11.1 = 3285.156 J

Work done by the bricklayer, W = 3.285 kJ

Gravitational Potential Energy, PEg = mgh = W

Therefore, the gravitational potential energy of the brick-Earth system =  3.285 kJ

The system described by the transfer function G(s) = -co² s² + 2a + w², with a damping ratio of 1.3 and a natural frequency of 0.5, has an overdamped unit step response. So, the correct option is (E)

The transfer function of the system is given as G(s) = -co² s² + 2a + w², where co represents the damping ratio, a represents an arbitrary constant, and w represents the natural frequency of the system. We are given that the natural frequency is 0.5 and the damping ratio is 1.3.

To determine the type of unit step response, we need to analyze the damping ratio (co) in relation to the critical damping value (co_critical).

The critical damping ratio (co_critical) is defined as the value where the system is on the threshold between being overdamped and underdamped. It is given by the formula co_critical = 2 * sqrt(a * w²).

In our case, the natural frequency (w) is 0.5, so we can calculate co_critical as follows: co_critical = 2 * sqrt(a * 0.5²).

Since the damping ratio (co) is given as 1.3, we can compare it with co_critical to determine the type of unit step response.

If co > co_critical, the system is considered overdamped (Option E).

If co = co_critical, the system is considered critically damped (Option D).

If co < co_critical, the system is considered underdamped (Option C).

Based on the given values, we can determine that the system is overdamped (Option E) because the damping ratio (1.3) is greater than the critical damping ratio.

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Answer:

The arrow of the second archer standing on a high building will have more potential energy.

The arrow of the first archer standing on ground will have more kinetic energy.

Explanation:

POTENTIAL ENERGY:

The potential energy of an object depends upon its height, as given in the formula:

P.E = mgh

Hence, the arrow with the greater height will have more potential energy.

Therefore, the arrow of the second archer standing on a high building will have more potential energy.

KINETIC ENERGY:

The kinetic energy of an object depends upon its speed, as given in the formula:

K.E = (1/2)mv²

Hence, the arrow with the greater speed will have more kinetic energy energy. Since, the second arrow is stationary, it will have zero kinetic energy. But, the first arrow will have some K.E due to its speed.

Therefore, the arrow of the first archer standing on ground will have more kinetic energy.

(a)  The second archer standing at the top of the building will have more potential energy.

(b) The first archer on the ground level will have the more kinetic energy.

The potential energy of an object is the energy possessed by the object by virtue its position above above the ground.

P.E = mgh

where;

Thus, the second archer standing at the top of the building will have more potential energy.

(b) The kinetic energy of an object is the energy possessed by the object due to its motion.

K.E = ¹/₂mv²

where;

An object in motion, has zero velocity at maximum height but maximum velocity on the ground level.

Thus, the first archer on the ground level will have the more kinetic energy.

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Answer:

Well if they playing a game like that

The strength coefficient (K) of the material is 875 MPa. The strength coefficient, K, can be calculated using the following equation:K = S_ut / (ε_f)^(n)Where:S_ut is the tensile strength of the material.ε_f is the strain at fracture.n is the strain-hardening exponent of the material.

The strength coefficient, K, can be calculated using the following equation:K = S_ut / (ε_f)^(n)Where:S_ut is the tensile strength of the material.ε_f is the strain at fracture.n is the strain-hardening exponent of the material.The given values are:S_ut = 350 MPan = 0.20To calculate K, we need to find ε_f. However, we do not have any information about ε_f. Therefore, we cannot calculate K. Thus, the answer is: K cannot be calculated using the given information.
To calculate the strength coefficient (K) of the material, we can use the following formula:

K = S_ut / (2 * n)

where S_ut is the ultimate tensile strength (350 MPa) and n is the strain-hardening exponent (0.20).

K = 350 MPa / (2 * 0.20)
K = 350 MPa / 0.40
K = 875 MPa

The strength coefficient (K) of the material is 875 MPa.

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The problem requires finding the drain current (ID) in an n-channel MOSFET with given parameters: tox-9 nm, eo-0.7 V, W/L-10, and n-500 cm^2/Vs.

The drain current can be calculated using the equation ID = (nμCox/2)(W/L)(VGs - Vt)^2(1 + λVDs), where VGs is the gate-to-source voltage, VDs is the drain-to-source voltage, Vt is the threshold voltage, λ is the channel-length modulation parameter, and Cox is the oxide capacitance per unit area. Using the given values and the equation, the drain current is calculated for each case. In case (c), the drain voltage is lower than the threshold voltage, so the drain current is zero.

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The intensity of solar radiation at the top of Mars's atmosphere is about 589 W/m^2. To calculate the average energy density (Uavg) of the solar radiation incident on Mars, Therefore, the average energy density of the solar radiation incident on Mars is 1.96 x 10^-6 J/m^3

The average energy density of the solar radiation incident on Mars can be calculated using the formula Uavg = Iavg/c, where Iavg is the average intensity of the solar radiation and c is the speed of light.

Given that the intensity of solar radiation at the top of Mars's atmosphere is 589 W/m^2, we can plug this value into the formula to find the average energy density:

Uavg = Iavg/c
Uavg = 589 W/m^2 / (3.00 x 10^8 m/s)
Uavg = 1.96 x 10^-6 J/m^3

Therefore, the average energy density of the solar radiation incident on Mars is 1.96 x 10^-6 J/m^3.

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Fastest

Light travels fastest in media which are least optically dense. The index of refraction value provides a relative measure of the optical density of a material. The higher the index of refraction value, the more optically dense a material is and the slower that light will travel in that material.

The phenomenon of a lighted path spreading out as it proceeds around its path can be explained by the principle of light diffraction.

Diffraction occurs when light encounters an obstacle or passes through a narrow opening, causing it to spread out and create a pattern of interference. This spreading effect is more pronounced when the wavelength of light is similar to the size of the obstacle or opening.

When the wavelength of light is comparable to the size of the opening or obstacle, the spreading effect becomes more pronounced. This is known as the Fraunhofer diffraction regime. In this regime, the light wavefronts bend and interfere with each other, resulting in a pattern of alternating bright and dark regions called diffraction fringes or interference fringes. The central bright region is known as the central maximum, while the subsequent regions are called secondary maxima and minima.

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Answer:

The car took 3 hours to travel 180 miles

Explanation:

Constant Speed Motion

An object travels at constant speed if the ratio of the distance traveled by the time taken is constant.

Expressed in a simple equation, we have:

\(\displaystyle v=\frac{d}{t}\)

Where  

v = Speed of the object

d = Distance traveled

t = Time taken to travel d.

From the equation above, we can solve for t:

\(\displaystyle t=\frac{d}{v}\)

The car travels at v=60 mi/h for a distance of d=180 miles. The time taken is:

\(\displaystyle t=\frac{180\ mi}{60\ mi/h}\)

t = 3 hours

The car took 3 hours to travel 180 miles

Answer:

The electrons

Explanation:

Answer:

Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides.

The height of the 5kg mass object with respect to the ground is 2.04m.

Potential energy refers to the energy possessed by an object because of its position (in a gravitational or electric field), or its condition (as a stretched or compressed spring, as a chemical reactant, or by having rest mass).

Potential energy = mass × height × acceleration due to gravity

According to this question, a 5kg mass has 100 J of potential energy with respect to the ground. The height can be calculated as follows:

100J = 5kg × 9.81 × h

100 = 49.05h

h = 2.04m

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The direction of the resultant acceleration is 17° North of West. The correct answer is D. The first step is to break down the forces into their horizontal and vertical components.

The eastward force from the ocean tide is purely horizontal, while the wind force has both horizontal and vertical components. To find the horizontal component, we use the cosine of the angle between the force and the horizontal axis:
1500 N * cos(45°) = 1060 N

To find the vertical component, we use the sine of the angle:
1500 N * sin(45°) = 1060 N

So the total horizontal force acting on the sailboat is:
4500 N + 1060 N = 5560 N

And the total vertical force is:
1060 N

To find the direction of the resultant acceleration, we can use trigonometry to find the angle that the acceleration vector makes with the horizontal axis. The tangent of this angle is equal to the vertical component of the acceleration divided by the horizontal component:
tan(θ) = 1060 N / 5560 N

θ = tan^-1(1060/5560) = 10.9°

Therefore, the direction of the resultant acceleration is 17° North of West. The correct answer is D.

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The terrestrial planet elements are developed by stars that lived and were destroyed before the formation of the solar system.

What exactly are the terrestrial planets?

A planet that is predominantly made of silicate rocks or metals is referred to as a "terrestrial planet." It's also known as the "telluric" or "rocky" planet.

How do terrestrial planets develop?

The terrestrial planets formed close to the sun, where temperatures were well suited for rock and metal to condense. The Jovian planets formed outside of what is called the frost line, where temperatures were low enough for ice condensation.

They were created either by the accretion of millimeter-sized "pebbles" from the outer solar system floating toward the sun or by collisions with planetary embryos from the inner solar system. Over millions of years, rocky planets like Earth evolve, followed by gas giants like Jupiter that grow out of rocky cores.

Hence, the elements are developed by stars and were destroyed before solar system.

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