a 120 kg uniform beam is attached to a vertical wall at one end is supported by a vertical cable at the other end. calculate the magnitude of the tension in the wire if the angle between the beam and the horizontal is delta=27 degrees

The mechanical energy of the a 3kg object at 7m/s and having a potential energy of 42J is 115.5 J.

Mechanical energy is simply energy accumulated due to performing some particular work. It is the sum of the potential energy and kinetic energy of an object. It is expressed as;

Mechanical energy = Potential energy + Kinetic energy

Given the data in the question;

First, we determine the kinetic energy of the object.

Kinetic energy = 1/2 × mass × ( velocity )²

Plug in the given values

Kinetic energy = 1/2 × 3kg × ( 7m/s)²

Kinetic energy = 1/2 × 3kg × 49m²/s²

Kinetic energy = 73.5kgm²/s²

Kinetic energy = 73.5J

Now, the mechanical energy of the object will be;

Mechanical energy = Potential energy + Kinetic energy

Plug in the values

Mechanical energy = 42J + 73.5J

Mechanical energy = 115.5 J

Therefore, the mechanical energy is 115.5 Joules.

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Answer:

The answer is 115.5 guyssss

Explanation:

The maximum velocity of the collar is 0.335 m/s.

The maximum velocity of a simple harmonic motion occurs when the object is in equilibrium position.

K.E = U

¹/₂mv² = ¹/₂kx²

mv² = kx²

where;

\(v = \sqrt{\frac{kx^2}{m} } \\\\v = \sqrt{\frac{316.36 \times 0.0254^2}{1.81} }\\\\v = 0.335 \ m/s\)

Thus, the maximum velocity of the collar is 0.335 m/s.

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The highest point in a ball's trajectory is when it is thrown vertically. The average speed of a plane is 254 m/s/s. A carousel rotates continuously.

seconds per metre Miles per hour (mph), kilometres per hour (km/h), and metres per second (m/s) are the three most popular speed units (mph). The distance an object covers in a given amount of time is its speed. Speed equals distance x time is the speed equation.

Galileo Galilei, an Italian physicist, is typically attributed with being the first to quantify speed by taking into account the distance travelled and the time required. Galileo defined speed as the amount of distance travelled in a given amount of time.

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Answer:

The acceleration of the box is 3 m/s²

Explanation:

Given;

mass of the box, m = 12 kg

horizontal force pulling the box forward, Fx = 48 N

frictional force acting against the box in opposite direction, Fk = 12 N

The net horizontal force on the box, F = 48 N - 12 N

The net horizontal force on the box, F = 36 N

Apply Newton's second law of motion to determine the acceleration of the box;

F = ma

where;

F is the net horizontal force on the box

a is the acceleration of the box

a = F / m

a = 36 / 12

a = 3 m/s²

Therefore, the acceleration of the box is 3 m/s²

Answer:

Gravity only becomes noticeable when there is a really massive object like a moon, planet or star. We are pulled down towards the ground because of gravity. The gravitational force pulls in the direction towards the centre of any object.

Answer:

The order = \(\mathbf{\sqrt{\dfrac{h}{2 \pi m}} \sqrt[4]{\dfrac{H}{g}} \sqrt[4]{\dfrac{1}{2}} }}\)

Explanation:

To miss the crack at a given distance is apparently not the same as the uncertainty that occurred in the distance while falling from the tower. However, it is believed that the uncertainties in both cases appear to be the same.

So, let's work it out together

According to Heisenberg's uncertainty principle:

\(\Delta s. \Delta p =\dfrac{h}{2} =\dfrac{h}{4 \pi}\)

Also; if we recall from the equation of motion that:

\(v = u + at ---(1) \\ \\ v^2 - u^2 = 2as --- (2) \\ \\ s = ut + \dfrac{1}{2}at^2 --- (3)\)

So, if u = 0 and a = g

Then;

\(v = gt --- (1) \\ \\ v^2 = 2gs - - - ( 2) \\ \\ s = \dfrac{1}{2}gt^2 --- (3)\)

From (2)

Making (s) the subject, we have:

\(s = \dfrac{v^2}{2g}\)

\(s = \dfrac{p^2}{2gm^2}\)

By differentiation;

\(ds = d (\dfrac{p^2}{2gm^2})\)

\(ds = \dfrac{2pdp}{2gm^2}\)

\(\Delta \ s = \dfrac{p \Delta p}{gm^2 }\)

where;

\(\Delta p = \dfrac{h}{4 \pi \Delta \ s}\) from uncertainty principle

This implies that:

\(\Delta s = \dfrac{p(\dfrac{h}{4 \pi \Delta s }) }{gm^2}\)

\(\Delta s = p(\dfrac{h}{4 \pi gm^2 }) \times \dfrac{1}{ \Delta s}}\)

\((\Delta s)^2 = \dfrac{hmv} {4 \pi gm^2 }\)

here;

v = 2gH

So;

\((\Delta s)^2 = \dfrac {h \sqrt{2gH} }{4 \pi gm }\)

\(\mathbf{(\Delta s)^2 = \sqrt{\dfrac{h}{2 \pi m}} \sqrt[4]{\dfrac{H}{g}} \sqrt[4]{\dfrac{1}{2}} }\)

Thus, the order = \(\mathbf{\sqrt{\dfrac{h}{2 \pi m}} \sqrt[4]{\dfrac{H}{g}} \sqrt[4]{\dfrac{1}{2}} }}\)

Answer:

The bag of sand

Explanation:

I think it is the bag of sand because according to the definition of impulse, impulse is the average force acting on a particule when an external force is being acted on it.

Answer:

Gravitional pull or gravity

Explanation:

Its that simple

The angular momentum of the particle in the x-component, y-component, and z-component are 3.12, 2.84, and 1.19 kg.m/s² respectively.

Angular momentum can be defined as the rotational form of linear momentum. Angular momentum is a physical conserved quantity.

The angular momentum in the terms of linear momentum can be represented as:

\(\displaystyle \vec L= \vec r\times \vec p = m\vec r \times \vec v\)

Given, the mass of the particle, m = 70 Kg

The displacement of the vector of the particle, \(\vec r = (5.0, -5.5)\)

The velocity of the vector of the particle, \(\vec u = (3.2, 0, -8.1)\)

The angular momentum of the particle, L can be calculated as:

\(\displaystyle \vec L= m\vec r \times \vec u\)

\(\displaystyle \vec L= m(5.0,-5.5, 0)\times (3.1,0,-8.1)\)

\(\displaystyle \vec L= 0.070 \times (44.55, 40.5, 17.05) .Kg.m/s^2\)

\(\displaystyle \vec L= (3.12, 2.84, 1.19) \; kg.m/s^2\)

Therefore, the x-component of angular momentum = 3.12 kg.m/s²

The y-component of angular momentum = 2.84 kg.m/s²

The z-component of angular momentum = 1.19 kg.m/s²

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Acknowledging one's worldview as a scholar-practitioner is crucial as it influences research inquiry. It shapes research questions, methods, and interpretations. Recognizing biases and being open to diverse perspectives ensures reliable and valid research.

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Answer:

Which of the following best describes a property of water?

A. Having a narrow temperature range for a liquid state

B. Requiring a low amount of heat to change temperature

C. Having high surface tension

D. Being unable to dissolve many substances

Explanation:

c

Answer:

104653.13J

Explanation:

Given parameters:

Mass of roller coaster  = 625kg

Speed  = 18.3m/s

Unknown:

Kinetic energy  = ?

Solution:

The kinetic energy is the energy due to the motion of a body.

     Kinetic energy  = \(\frac{1}{2}\) x m x v²  

m is the mass

v is the speed

    Kinetic energy  =  \(\frac{1}{2}\)  x 625  x  18.3²   = 104653.13J

Answer:

b) The electric field inside is zero.

Explanation:

This is simply because the charges in the field will be in motion, thus this charges kind of spread around to make the conductor field zero.

Answer:

F=w=ma                                                                                                                                                       OR by using equations of motions                                                                               vf=vi-at                    : a=vf-vi/t                                                              eq 1                         s=vit+1/2at squre                                                                                 eq 2                     2as=vf squre - vi squre                                                                        eq 3                                                                                                                                                                                  

Explanation:

where m is the mass of falling body , f is the weight is the force acting down ward , vf is the final velocity, vi is the inetial velocity , t is the time and s is the distance covered by a body.

Answer:

1,840,000 J

Explanation:

The energy required for a particular change in state is given by the specific latent heat. Specific latent heat is the amount of energy required to change the state of 1 ... of ice into 1 kg of water at its melting point of 0°C. The same amount of energy ... stored or released as the temperature of a system changes can be calculated.

So for these problems, we are going to need to use the formula

M = image height / object height

in this case, M = 16.6 and the image height is 5.3 cm

Plugging in the numbers, we get 16.6 = 5.3 cm / object height

object height = 5.3/16.6

the object is .3192... cm

rounding to 2 decimal places, the answer is .32 cm

The number of moles of gas added to the container is -3.56 mol, and the negative sign means that the number of moles of gas decreased, or in other words, the gas was compressed.

The number of moles of gas can be calculated using the Ideal Gas Law:

PV = nRT

where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is temperature.

Since the pressure and temperature remain constant, we can equate the initial and final state of the gas:

n1 × (8.15 L) × (T) = n2 × (13.7 L) × (T)

Dividing both sides by T, we get:

n1 × 8.15 L = n2 × 13.7 L

Solving for n2:

n2 = (n1 × 8.15 L) / (13.7 L)

n2 = (8.51 mol) × (8.15 L) / (13.7 L)

n2 = 4.95 mol

So, the number of moles of gas added to the container is:

n2 - n1 = 4.95 mol - 8.51 mol = -3.56 mol.

Note that the answer is negative, which means that the number of moles of gas decreased, or in other words, the gas was compressed.

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Answer:

the particle is at coordinates (18,15/2)

Explanation:

To find the acceleration of the particle, we can use the formula for velocity: v = v0 + at, where v0 is the initial velocity, a is the acceleration, and t is the time. Since we know the initial and final velocities, as well as the time interval, we can solve for the acceleration:

a = (v - v0)/t = [(9i + 7j) - (3i - 2j)]/3 = (6i + 9j)/3 = 2i + 3j

So the acceleration of the particle is a = 2i + 3j m/s².

To find the coordinates of the particle at t=3s, we can use the formula for position: r = r0 + v0t + 1/2at², where r0 is the initial position. Since the particle starts at the origin, r0 = 0. Plugging in the values we have:

r = 0 + (3i - 2j)(3) + 1/2(2i + 3j)(3)² = 9i - 6j + 9i + 27/2 j = 18i + 15/2 j

We can use the kinematic equations of motion to solve this problem.

Let the acceleration of the particle be a = axî + ayj.

(a) Using the equation of motion v = u + at, where u is the initial velocity:

f = v = u + at

Substituting the given values, we get:

(91+7j) = (3î-2j) + a(3î + 3j)

Equating the real and imaginary parts, we get:

91 = 3a + 3a (coefficients of î are equated)

7 = -2a + 3a (coefficients of j are equated)

Solving these equations simultaneously, we get:

a = î(23/6) + j(1/2)

So the acceleration of the particle is a = (23/6)î + (1/2)j.

(b) Using the equation of motion s = ut + (1/2)at^2, where s is the displacement and u is the initial velocity:

At t = 3s, the displacement of the particle is:

s = ut + (1/2)at^2

Substituting the given values, we get:

s = (3î-2j)(3) + (1/2)(23/6)î(3)^2 + (1/2)(1/2)j(3)^2

Simplifying, we get:

s = 9î + (17/2)j

So the coordinates of the particle at t=3s are (9, 17/2).

Aproximately 1.09 m/s was the locust's first speed.

In engineering mechanics, vectors are used to express values with both a magnitude and a direction. For analysis, vector representations of a variety of engineering quantities—including forces, displacements, velocities, and accelerations—are required.

Δy = vsin(θ)t - 0.5gt²

0 = v*sin(55°)t - 0.5(-9.81 m/s²)*t²

t = 2vsin(55°)/g

Now, we can use the horizontal motion of the locust to find the initial velocity v. The horizontal distance traveled by the locust is given by:

Δx = v*cos(55°)*t

Substituting the expression for t that we just found:

0.750 m = vcos(55°)2vsin(55°)/g

Solving for v:

v = √(0.750 mg/(2sin(55°)*cos(55°)))

v ≈ 1.09 m/s

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Answer:

how close to the true value a measurement is

Answer:

pls give me brainliest

Explanation:

Answer:

THE ANSWER IS................. something

Explanation:

If two electrons are 2 cm apart at the closest approach, then the magnitude of the maximum electric force that they exert on each other would be 5.8×10⁻²⁵ N, therefore the correct answer is option A.

Coulomb's law can be stated as the product of the charges and the square of the distance between them determine the force of attraction or repulsion acting in a straight line between two electric charges.

The math mathematical expression for the coulomb's law given as

F= k Q₁Q₂/r²

As given in the problem if f two electrons are 2 cm apart at the closest approach,

By substituting the respective values in the above formula of Coulomb law,

F =9×10⁹×(-1.6×10⁻¹⁹)×(-1.6×10⁻¹⁹)/(2×10⁻²)²

F=5.8×10⁻²⁵ N

Thus, the magnitude of the electric force would be 5.8×10⁻²⁵ N.

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The diameter and the radius of the field that Victoria ran around would be = 80m and 40m respectively.

The total distance covered by Victoria = 750meters

The number of time she ran around the field = 3

Therefore the circumference of the field = 750/3 = 250m

The formula for the circumference of circle = 2πr

That is ;

250 = 2×3.14 ×r

make r the subject of formula;

r = 250/ 6.28

r = 39.8 = 40 cm

Therefore the diameter = 2×40 = 80m

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T he role of oxygen in air supply is to keep all the ling beings live and healthy.

Oxygen is the most important gas required for the living of human beings, animals, birds and the whole ecosystem.

Oxygen is fundamental for breath on the grounds that the body utilizes it to 'consume' food atoms. Creatures take in oxygen while breathing in and radiate carbon dioxide while breathing out. Oxygen makes up practically 21% of the all out gases in air, with the majority of the excess gas being physiologically latent nitrogen.

Oxygen assumes a basic part in breath, the energy-delivering science that drives the digestion systems of most living things. We people, alongside numerous different animals, need oxygen in the air we inhale to remain alive. Oxygen is created during photosynthesis by plants and many sorts of organisms.

Thus, the air supply needs oxygen on the majority.

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Answer: C

Explanation: 60 divided by 4 =15

Answer:

hope it helps.

The resistance to flow over the membrane is represented by two resistors with resistances R1 = 10 k and R2 = 90 k. SW1 is a switch that represents variability.

A. When the switch SW1 is closed, the current flowing around the loop can be found using Kirchhoff's loop rule. Thus, the total voltage drop around the loop is V1 - IR1 + V2 - IR2 = (V1 + V2) - I(R1 + R2). Since the loop is a closed circuit, the current I must be the same everywhere, so we have I = (V1 + V2)/(R1 + R2) = (100 mV + 50 mV)/(10 kΩ + 90 kΩ) = 1.0 μA (microampere).

B. When the switch SW1 is open, no current flows through the resistor R1, so the voltage drop across it is zero (0 V). When the switch is closed, the voltage drop across R1 can be found using Ohm's law: V1 - IR1 = (100 mV) - (1.0 μA)(10 kΩ) = 90 mV.

C. When the switch SW1 is open, no current flows through the resistor R2, so the voltage drop across it is zero (0 V). When the switch is closed, the voltage drop across R2 can be found using Ohm's law: V2 - IR2 = (50 mV) - (1.0 μA)(90 kΩ) = -35 mV.

D. Since we have defined point b as having a voltage of 0 V, the voltage at point d is simply the voltage drop across R2, which we found to be -35 mV. Thus, the voltage difference across the membrane is 0 V - (-35 mV) = 35 mV.

E. However, the current flowing around the loop would be different, since the resistance of the path between points a and d would be different. Specifically, when R1 and R2 are swapped, the current flowing around the loop when the switch is closed would be (V1 - V2)/(R2 + R1) = (100 mV - 50 mV)/(90 kΩ + 10 kΩ) = 0.5 μA, which is half the value we calculated earlier.

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The earthquake would occur 13 minutes before 10:05 a.m. which will be at 9.52 am.

The p-waves travel with a constant velocity of 7 km/s

The time can be calculated by using the formula

t = d / v

where

T1 =  10:05 a.m

d is the distance they take to travel from the epicenter

v is the speed of the p-waves

On average, the speed of p-waves is

v = 7 km/s

d = 5600 km (given)

Substituting the values in the formula;

t = d / v

t = 5600 ÷ 7

t = 800 seconds

Converting into minutes,

t = 800 ÷ 60

t = 13.3

≈ 13 mins

T1 -  13 mins = T2

10:05 - 13 mins = 9.52 am

It means the earthquake occurred prior 13 minutes, that is at 9.52 am.

Therefore, the earthquake occurred at 9.52 am.

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Answer:

BI/BII = 1

Explanation:

The magnetic field due to a solenoid is given by the following formula:

\(B = \mu nI\\\)

where,

B = Magnetic Field due to solenoid

μ = permeability of free space

n = No. of turns per unit length

I = current passing through the solenoid

Now for the first solenoid:

\(B_1 = \mu n_1I_1 \\\)

For the second solenoid:

\(B_2 = \mu n_2I_2\\\)

Dividing both equations:

\(\frac{B_1}{B_2} = \frac{\mu n_1I_1}{\mu n_2I_2}\\\)

here, no. of turns and the current passing through each solenoid is same:

n₁ = n₂ and I₁ = I₂

Therefore,

\(\frac{B_1}{B_2} = \frac{\mu nI}{\mu nI}\\\)

BI/BII = 1

Answer:

35, I got you bro, i got you