a 0.32 kg pendulum bob passes through the lowest part of its path at a speed of 2.36 m/s. the acceleration of gravity is 9.8 m/s 2 . what is the tension in the pendulum cable at this point if the pendulum is 75 cm long? answer in units of n.

Assuming Usain Bolt begins at rest (with zero initial velocity) and his motion is uniformly accelerated, his position at time t is given by

where a denotes the average acceleration and t denotes the time. Because the distance covered in our problem is S=100 m and the time taken is t=9.58 s, the average acceleration can be calculated by rearranging the previous formula:

1175.50 kg m/s

Usain Bolt's weight is 93.89 kg.

The average velocity in a 100-meter sprint is 12.52 metres per second.

The momentum can be calculated by taking the product of mass and velocity and multiplying it by

The following factors provide momentum:kg m/s

where denotes mass and denotes velocity

Thus, Usain Bolt's momentum can be calculated by plugging in the given values for

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A 2.0-kg item is subjected to a force of 6.0 n to the right across a 3.0 meter distance. The item has had 18 J of work done to it.

F=6.0 N, the rightward force

The object's mass is m=2.0 kg.

The object's force was applied across a distance of 3.0 meters.

the work carried out on the thing.

The amount of energy transferred from a source to an object by the application of an external force is measured as the work done.

The product of the applied force and the distance over which it was applied determines the amount of work that was completed.

As a result, W=f ×d provides the work performed.

When known values are substituted,

W=6×3

W=18 J

Final response:

18.0 J worth of work was done on the item.

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The flow velocity of the river is 2 mts/hour.

To solve the problem, we can use the formula:

v = d / t

Where,

v = the velocity of the river

d = the distance traveled by the log in the same time interval t as the boat.

Let's say the speed of the boat with respect to the water vb. [assume the speed of the boat with respect to the water is constant throughout the entire trip]

Assume, vb = 3 mts/hour.

The distance traveled by the boat upstream is 1.52 km + (91 min x 60 sec/min) x vb. The distance traveled by the log is 2 x 1.52 km. The time elapsed for the entire trip is 2 x 91 min x 60 sec/min.

So, v = (2 x 1.52 km) / (2 x 91 min x 60 sec/min)

Finally, v = vb - v.

Substituting the known values, we get:

v = vb - (2 x 1.52 km) / (2 x 91 min x 60 sec/min)

v = 3 - 1.00

v = 2 mts/hour

The velocity of the river is 2 mts/hour.

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Therefore, the block will slide down the plane before coming to rest for approximately 1.1 m.

The force of gravity (Fg) acting on the block is given as:

Fg = m × g

= 9.81 m/s²

The normal force (Fn) acting on the block is given by: Fn = Fg × cosθThe force of friction acting on the block (Ff) is given by: Ff = µ × Fn The net force (Fnet) acting on the block down the plane is given by:

Fnet = Fg × sinθ - Ff The work done (W) by the net force acting on the block is given by:

W = Fnet × d According to the work-energy theorem, the work done (W) is equal to the change in kinetic energy (ΔK) of the block. W = ΔKThe change in kinetic energy (ΔK) of the block is given by:

ΔK = Kf - Ki. As the block comes to rest finally, the final kinetic energy (Kf) of the block becomes zero. Therefore,

ΔK = - Ki

Calculation of the Distance traveled by the block before coming to rest: We know that: W = Fnet × dand

W = ΔK - Ki Substituting the values of F net, Ki, and ΔK, we get: Fg × sinθ - µ × Fg × cosθ × d

= - 3.0The distance traveled by the block before coming to rest (d) is given by:

d = - 3.0 / (µ × Fg × cosθ - Fg × sinθ)d = 3.0 / (µ × Fg × cosθ - Fg × sinθ)Now, substituting the given values in the above equation, we get the final answer 1.1 m (approx)

Therefore, the block will slide down the plane before coming to rest for approximately 1.1 m.

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Answer:

B1 and A2

Explanation:

the first one would be B because put 4 into mass times it by the velocity divide it by half because of the radius so the ending result would be 4

number 2 would be  A because just input the numbers by the mass, velocity etc.) then any number  that needs to be divided for an example radius would have to divide so you divide to get the answer.

Answer:

The force makes it go slower or faster depending on it's mass.

Explanation:

Force = mass times acceleration

Answer:

The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.

Answer:

With regards to NASA's ambition to send humans to Mars, is an encouraging idea.  Also, the aim of sending food supply by unmanned spacecraft before the 2030 project though noble is filled with constraints and design problems.

For the constraints,

1. The spacecraft could be lost on the space before it reaches its destination being Mars. This is because, lack of communication between the control unit on earth and the spacecraft signify it being lost forever.

2. The food supply is bound to spoil on Mars since it would be stored unrefrigerated. This is as a result of the actions of the micro organisms acting on them.

For the criteria for the engineering design problem:

1. The distance between earth and Mars is very far

2. Not factoring in the preservation method into the unmanned aircraft.

Explanation:

Answer:

μ = 0.391

Explanation:

The friction force is defined as the product of the coefficient of friction by the normal force. In this way, we have the following equation.

F = μ*N

Where:

F = friction force = 403 [N]

μ = static coefficient

N = Normal force [N]

And the normal force of a body lying on a horizontal surface can be calculated by means of the product of mass by gravitational acceleration.

\(N=m*g\\N=105[kg]\\g=9.81 [m/s^{2} ]\\N=105*9.81\\N=1030.05[N]\)

Now we can clear the  static coefficient

\(403=u*1030.05\\u=0.391\)

Before the collision, the velocity of the orange marble is -2 m/s which is equal to the velocity of the blue marble.

The velocity of an object is the speed of the object in a specified direction.

The distance traveled by an object in a specified direction is known as the displacement of the object.

Hence velocity can be defined as the ratio of displacement and the time taken.

Velocity = displacement/time taken.

Considering the velocity of the two marbles;

Before the collision, the blue marble has an equal velocity as the orange marble but in an opposite direction. Taking the direction of the blue velocity as positive, the velocity of the orange marble will be equal to the velocity of the orange marble in a negative direction.

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The direction of the courts in recent years has been towards expanding and strengthening the rights of the accused, while also ensuring that justice is served and the rights of victims are protected.

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The frequency domain graph of the periodic composite signal consists of two peaks, one at 100 Hz with an amplitude of 20 V and another at an unknown frequency with an amplitude of 5 V.

In the frequency domain, the composite signal can be represented by a graph showing the amplitude of each frequency component present in the signal. In this case, the signal is composed of two sine waves. The first sine wave has a frequency of 100 Hz and a maximum amplitude of 20 V. This means that in the frequency domain graph, there will be a peak at 100 Hz with an amplitude of 20 V.

The second sine wave's frequency is not given, but we know that it has a maximum amplitude of 5 V. Therefore, there will be another peak in the frequency domain graph at an unknown frequency with an amplitude of 5 V.

Since the bandwidth of the composite signal is 2000 Hz, the frequency domain graph will span a range of frequencies from 0 Hz to 2000 Hz. Apart from the two peaks mentioned above, there will be no other significant frequency components in the graph.

To summarize, the frequency domain graph of the periodic composite signal will have two peaks—one at 100 Hz with an amplitude of 20 V, and another at an unknown frequency with an amplitude of 5 V.

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Where the angle of incidence equals the angle of reflection, resulting in a mirror image that is flipped both horizontally and vertically.

Correct answer is, all of the above

When an image is reflected in a plane mirror, it undergoes a complete inversion. This means that not only is the left side of the object reflected to the right side in the image, but the top side is reflected to the bottom side, and the front side is reflected to the back side.

A plane mirror creates a virtual image that appears to be the same distance behind the mirror as the object is in front of it. In this virtual image, the left and right sides are inverted, while the up-down and front-back orientations remain the same.

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Latent heat is correctly described as the heat or energy that is absorbed or released during a phase change of a substance.

This is referred to as a form of  energy that is transferred from one body to another as the result of a difference in temperature.

Latent heat on the other hand is referred to as the type of energy which is absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature thereby making it the correct choice.

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By using this formula =Diameter = Diameter = Known Field Diameter × (Known Magnification / Unknown Magnification)
, you can calculate the diameter of an unknown microscope field, allowing you to estimate the size of the objects you're observing under different magnification levels.

.To calculate the diameter of an unknown microscope field, you can use the formula:

Unknown Field Diameter = Known Field Diameter × (Known Magnification / Unknown Magnification)

Here's a step-by-step explanation of the formula:

1. Determine the known field diameter: This is the diameter of the field of view under a certain magnification, which is usually provided by the microscope manufacturer or can be measured experimentally.

2. Determine the known magnification: This is the magnification level at which the known field diameter was measured.

3. Determine the unknown magnification: This is the magnification level at which you want to calculate the unknown field diameter.

4. Plug the values into the formula and solve for the unknown field diameter.

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Answer:

Rigorous exercise

Explanation:

For your heart rate is been around 100 bpm you should be doing a rigorous exercise . but if ain't doing any rigorous exercise and your heart rate is constantly above 100 bpm you should consult your doctor.

An average heart is between 60 bpm to 100 bpm.

Answer:

The Answer is C. The force of gravity

Explanation:

This is because it is the force of gravity exerted or inflicted upon the object or organism. With more gravity inflicting upon an object the heavier it feels. In fact, weight and gravity have such a close relationship that the equation for weight is F = M x A where F represents the objects weight in Newtons, M equals it's mass, and A represents the downward acceleration due to the gravity.

Answer:

The answer is c

Explanation:

The correct expression for the rotational inertia of the spherically shaped object is \(\(\text{c) } 3.6m^5\)\).

In the given scenario, the students determine that the radius of the object is given by \(\(r = km^2\) with \(k = 3\, \text{m/kg}^2\)\). To calculate the rotational inertia of the object, we need to use the formula for rotational inertia of a spherical object, which is given by \(\(I = \frac{2}{5}mr^2\)\), where m is the mass of the object and r is the radius.

Substituting the given expression for r in terms of m, we have \(\(I = \frac{2}{5}m(km^2)^2\)\). Simplifying this equation, we get \(\(I = \frac{2}{5}mk^2m^4\)\).

Substituting the value of \(\(k = 3\, \text{m/kg}^2\)\), we have \(\(I = \frac{2}{5}(3\, \text{m/kg}^2)^2m^5\)\), which further simplifies to \(\(I = \frac{2}{5} \times 9 \, \text{m}^2/\text{kg}^2 \times m^5\)\).

Finally, multiplying the constants, we get \(\(I = 3.6 \, \text{m}^2/\text{kg}^2 \times m^5\)\), which corresponds to option c) \(3.6 \(m^5\)\).

Therefore, the correct expression for the rotational inertia of the object is \(3.6 \(m^5\)\).

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During the ride, no energy is gained or lost. The automobiles' kinetic energy passes to the track, shaking it as energy flows from one location to another.

Energy transformation is when the energy is transformed into another energy. Kinetic energy is converted into potential energy, which is subsequently converted back into kinetic energy.

Friction between the cars and the track also converts it from kinetic to thermal energy. The overall amount of energy doesn't change, though.

Therefore, no energy is acquired or lost during the ride. The track is shaken as a result of the kinetic energy of the cars moving from one place to another.

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The maximum number of 6 AWG THW copper conductors permitted in a 1 1/4-inch RMC conduit nipple, 20 inches long, would be 7 conductors.

To determine the maximum number of 6 AWG THW copper conductors permitted in a 1 1/4-inch RMC (rigid metal conduit) conduit nipple, you need to consider the fill capacity of the conduit as per the National Electrical Code (NEC) guidelines. The fill capacity depends on the size of the conduit and the size of the conductors being used.

According to NEC Table C.9, the maximum fill capacity for a 1 1/4-inch RMC conduit is 0.40 square inches. This measurement represents the total cross-sectional area of the conductors that can be inside the conduit.

For 6 AWG THW copper conductors, you can refer to NEC Table 8, which provides the area per conductor. In this case, a 6 AWG conductor has an area of 0.0507 square inches.

To determine the maximum number of 6 AWG THW copper conductors, you divide the fill capacity of the conduit by the area per conductor. In this case:

Maximum fill capacity of 1 1/4-inch RMC conduit = 0.40 square inches

Area per conductor for 6 AWG THW copper = 0.0507 square inches

Maximum number of conductors = Fill capacity / Area per conductor

Maximum number of conductors = 0.40 / 0.0507

Maximum number of conductors = 7.89

Therefore, the maximum number of 6 AWG THW copper conductors permitted in a 1 1/4-inch RMC conduit nipple, 20 inches long, would be 7 conductors. However, it's important to note that local codes and regulations may impose additional requirements or limitations, so it's always best to consult the relevant electrical codes or a licensed electrician for precise calculations in a specific installation.

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Answer:

A pardon

Explanation:

Hope this helps

Answer:

that would probably be a A.Pardon

Answer:

Mass of Earth (M1) = 6×10^24 kg

Mass of Puppy (M2) = 3.6 kg

Radius (R) = 6371000 m

Universal Gravitational Constant (G) = 6.67 × 10^11

Now,

Gravitational Force = G×M1×M2 / R^2

GF = 6.67 × 10^11 × 6 × 10^24 × 3.6 / (6371000)^2

GF = 144.072 × 10^35 / 40,589,641,000,000

GF = 3549.477 × 10^20

Answer:

c

Explanation:

trust

Answer: I thinks it‘s the feathers

Explanation:

Bc feathers are warm and the hollow bones are to make the bird lighter so it can fly, the chest muscles don’t make heat, and the air sacs are probably for storing air

Answer:

23 hours, 56 minutes

The mass of the measuring stick if it is balanced by a support force at the 0.25 m mark is 0.75 kg.The mass of the measuring stick can be found using the principles of torque.

Given that a 1.0 kg rock is suspended by a massless string from one end of a 1 m measuring stick, and is balanced by a support force at the 0.25 m mark. Thus, taking clockwise as the negative direction of torque and counterclockwise as the positive direction, the torques at the 0.25 m mark are:T clockwise = weight of the rock x distance from support forceT clockwise = (1.0 kg)(9.8 m/s²)(0.75 m) = 7.35 NmT counterclockwise = weight of the measuring stick x distance from support forceT counterclockwise = (mass of measuring stick)(9.8 m/s²)(0.25 m) = 2.45 NmFor balance, T clockwise = T counterclockwise. Substituting values,7.35 Nm = 2.45 Nm(mass of measuring stick) = (7.35 Nm)/(2.45 Nm) = 3 kg.

Therefore, the mass of the measuring stick is 3 kg.Subtracting the weight of the rock, the mass of the measuring stick is:mass of measuring stick = 3 kg - 1 kg = 2 kgSo, the mass of the measuring stick if it is balanced by a support force at the 0.25 m mark is 0.75 kg.

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The ball is served from rest and attains a speed of 131 mi/h ≈ 211 km/h ≈ 58.6 m/s.

a. If the racket is in contact with the ball over a distance of 0.15 m, then it applies a constant acceleration a such that

\(\left(58.6\dfrac{\rm m}{\rm s}\right)^2 = 2a(0.15\,\mathrm m) \implies a = \dfrac{\left(58.6\frac{\rm m}{\rm s}\right)^2}{2(0.15\,\mathrm m)} \approx \boxed{11,400\dfrac{\rm m}{\mathrm s^2}}\)

b. Since acceleration is constant, we can use the definition of average acceleration:

\(a=a_{\rm ave} = \dfrac{\Delta v}{\Delta t}\)

Solve for ∆t :

\(a_{\rm ave} = a = \dfrac{58.6\frac{\rm m}{\rm s}}{\Delta t} \implies \Delta t = \dfrac{58.6\frac{\rm m}{\rm s}}a \approx 0.00512 \,\mathrm s = \boxed{5.12\,\mathrm{ms}}\)

Answer:

12.25 meters

Explanation:

s=1/2(v+u)t

s= displacement

v= final velocity

u= initial velocity

t= time

7m/s+0m/s divide by 2= 3.5 m/s velocity  Times 3.5 seconds=  12.25 meters

The box with the changing data shows that the acceleration is constant at 4.90 m/s2, but i thought g = 9.80 m/s2.

The acceleration due to gravity (g) is different from the acceleration of the object itself. Although g is usually taken to be 9.8 m/s2, it can vary depending on the object's location and height above the Earth's surface. As a result, a falling object can experience acceleration greater than, less than, or equal to g when air resistance is taken into account or not

In the given scenario, the box is not necessarily in free fall; it could be undergoing linear motion along a surface. Furthermore, the box could be in free fall, but with air resistance affecting its motion. In this situation, the box's acceleration would be less than g.The box's acceleration may have been determined using an accelerometer or a ticker tape. Regardless, the acceleration indicates the rate at which the box's velocity is changing, which may or may not be equal to g.

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Answer:

HEAT?

Explanation:

A person gets a suntan on a beach is not an example of convection. Therefore, the correct option is option C.

The process of convection involves the movement of such a heated fluid, including such air or water, in order to transfer heat. Natural convection is caused by the fact that most fluids have a propensity to expand when heated, becoming less dense and rising due to the increased buoyancy.

Natural convection is caused by the fact that most fluids have a tendency to expand when heated, becoming less dense and rising due to the increased buoyancy. The air inside a heated room or the water inside a kettle are heated uniformly thanks to circulation brought on by this effect. A person gets a suntan on a beach is not an example of convection.

Therefore, the correct option is option C.

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Your question is incomplete but most probably your full question was,  

Which one of the following is not an example of convection?

a) Smoke rises above a fire.

b) An eagle soars on an updraft of wind.

c) A person gets a suntan on a beach.

d) Spaghetti is cooked in water.

e) An electric heater warms a room.  

Answer:

The planes’ acceleration from A to B is 500m/s^2

Explanation:

Given that the initial velocity u is 8000m/s

and also given the final velocity v=10,000 m/s

the time taken to move from A to B = 40 second

The acceleration is defined as the rate of change of velocity with time

we know that the expression for acceleration is given as

a=(v-u)/t

substituting our given data into the expression for a we have

a=(10000-8000)/40

a=2000/40

a=500m/s^2

The planes’ acceleration from A to B is 500m/s^2