A student releases the 4kg bob of a 0.47m long
pendulum from the position shown.
What is the period of the harmonic motion?
S
What is the frequency of the harmonic motion?
Hz
How many cycles would the pendulum make in
45s?
6
(You may answer with a decimal)
6°

Part 1: the final angular speed is 0.64 + 0.86 = 1.50 rad/s. Substituting the values, 1.05 J.

Angular speed is the rate of change of angular displacement of a body over a period of time. It is also known as rotational speed and is usually measured in revolutions per minute (RPM) or radians per second (rad/s).

Part 1:
The angular speed is given by the formula w = Iα, where w is the angular speed, I is the moment of inertia and α is the angular acceleration. Since the moment of inertia is constant, the change in angular speed is given by Δw = ΔIα.
The change in moment of inertia is given by ΔI = mr2, where m is the mass of the objects and r is the change in radius.
So, the change in angular speed is given by Δw = mr2α.
Substituting the given values,
Δw = (3 kg)(1 m - 0.3 m)2(0.64 rad/s)
Δw = 0.86 rad/s
Therefore, the final angular speed is 0.64 + 0.86 = 1.50 rad/s.

Part 2:
The change in kinetic energy of the system is given by ΔK = ΔIw2/2.
Substituting the values,
ΔK = (3 kg)(1 m - 0.3 m)2(1.50 rad/s)2/2
ΔK = 1.05 J.

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We call the acceleration of an object moving in uniform circular motion— resulting from a net external force—the centripetal ...

Answer:

A

Explanation:

because the speed divide by the frequency is equal to the wavelength(in meters)

5×10² m

Answer:

i think its 8.2

Explanation:

Explanation:

Given that,

Distance, d = -56.3 m

It strikes the ground 4.00 seconds after being thrown.

Using second equation of motion to find the speed was the rock thrown. So,

\(d=ut+\dfrac{1}{2}at^2\)

Here, a = -g

\(d=ut-\dfrac{1}{2}gt^2\\\\-56.3=u(4)-4.9(4)^2\\\\-56.3=4u-78.4\\\\u=5.52\ m/s\)

Let it will cover a distance of s meters. So,

\(s=\dfrac{v^2-u^2}{-2g}\\\\s=\dfrac{0^2-(5.52)^2}{-2\times 9.8}\\\\s=1.55\ m\)

The direction of the resultant force is 48⁰.

The horizontal component of the force is calculated as follows;

10 N is inclined to 35⁰ to the horizontal

Fx = 10 x cos(35)

Fx = 8.19 N

6 N is inclined to 70⁰ to the horizontal

Fx = 6 x cos(70)

Fx = 2.05 N

∑Fx = 8.19 + 2.05

∑Fx =  10.24

The vertical component of the force is calculated as follows;

10 N is inclined to 35⁰ to the horizontal

Fy = 10 x sin(35)

Fy = 5.74 N

6 N is inclined to 70⁰ to the horizontal

Fy = 6 x sin(70)

Fy = 5.64 N

∑Fy = 5.74 N + 5.64 N

∑Fy =  11.38 N

θ = arc tan(ΣFy/ΣFx)

θ = arc tan(11.38/10.24)

θ =  48⁰

Thus, the direction of the resultant force is 48⁰.

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Answer:

Tensional force

Explanation:

Tensional force is a force that experience when it is stretched or compressed an object.

If the system is moving to the left with a constant acceleration and the surface is perfectly smooth, the reading on the spring balance would be zero.

The spring balance measures the force exerted on it, which in this case would be the force due to gravity acting on the object.

However, since the surface is smooth and there is no friction, there would be no additional force acting on the object, resulting in zero net force and therefore zero reading on the spring balance.

We observe that only in these particular circumstances would the reading on the spring balance be zero.

The reading on the spring balance would be different if there were additional forces operating on the object, such as friction or an outside force.

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Answer:

letra A segundo o couculo a divisão e completa

The object distance of the lens is 10 cm and the image distance of the lens is 30 cm.

The object and image distance formed by the lens is calculated by applying the following lens formula.

v + u = 40 ------- (1)

v/u = 3 ------------ (2)

v = 3u

Substitute v into equation (1);

3u + u = 40

4u = 40

u = 40/4

u = 10 cm

The image distance = 3u

= 3 x 10 cm

= 30 cm

Thus, the object distance is 10 cm and the image distance is 30 cm.

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Third one. It will increase the number of frequencies that satellites can use to communicate with Earth.

It will increase the number of frequencies that satellites can use to communicate with Earth. The correct option is C.

Satellite communication is the utilization of artificial satellites to give communication links among various points on Earth in telecommunications.

Satellite communications are critical components of the global telecommunications system.

Satellites communicate by sending signals to Earth's antennas via radio waves. The antennas then capture those signals and process the information they contain.

Satellites collect data on the Earth's clouds, oceans, land, and air. They can also see wildfires, volcanoes, and smoke.

All of this data assists scientists in forecasting weather and climate. It assists farmers in determining which crops to plant.

When severe solar weather continues for an extended period of time, it increases the number of frequencies that satellites can use to communicate with Earth.

Thus, the correct option is C.

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Answer:

Hello your question has some missing parts attached below is the missing part

Answer :

Explanation:

Matching the Richter magnitude indicated in column A with the Earthquake effect found in column B

Answer: Density = 6071.428571 kg/m³

Explanation: Given that mass m=17 kg

volume displaced v=2.8L

We know that

density = mass/volume

Here density=17kg/2.8L

Also 1L=1000m³ Hence

density=17kg/2.8×10⁻³m³

           =6071.428571 kg/m³

Complete question is;

You are looking at a module specification

sheet that has the table of information

below. What is the maximum power of this

module in Watts to the nearest whole Watt?

Value

Polycrystalline si

Characteristic

Cell Type

Cell

Configuration

Voc

160 in series

137.2 V

V_imp: 29.3 V

Ilsc: 8.60 A

I_Imp: 8.02 A

Dimensions (mm/in): 1000 x 1600 x 50 mm / 39.4" x 63" x 2"

Weight: 10 kg / 22 lbs​

Answer:

P ≈ 235 Watts

Explanation:

Formula for power is;

P = IV

Now, for maximum power, we will make use of I_imp and V_imp given

Thus, P = I_imp × V_imp

We are given;

V_imp: 29.3 V

I_Imp: 8.02 A

Thus: P = 8.02 × 29.3 = 234.986 Watts

We are to approximate to the nearest whole watt.

Thus: P ≈ 235 Watts

Answer:

D. X-rays have more energy than ultraviolet waves.

Answer:

which on a is the question

Answer:

The answer is "Option C".

Explanation:

It's evident from the figure below that after thirty minutes, not no more hydrogen can be created because all of the reactants have converted into products.

hydrogen gas created in cm cubes per period x = 20 seconds, y = 45 centimeters squared, and so on.

A reaction's terminus (the graph's flat line) indicates that no further products are being created during the reaction.

Answer:

Polishing the rough surface.

Oiling or lubricating with graphite or grease the moving parts of a machine.

Providing all bearings or wheels between the moving parts of a machine or vehicles reduce friction and allow smooth movement as rolling friction is less than sliding friction.

Explanation:

In a scenario where an egg is free-falling from a nest in a tree and neglecting air resistance, there is one force acting on the egg and the force is unbalanced which is denoted as option B.

This is referred to as an external agent which is capable of influencing the motion of an object or body. It is also capable of changing the state of rest of a body and the unit in Newton.

When an object is falling from a height and there is no air resistance then the only force acting on it is gravitational force which is unbalanced as there is no equal and opposite force to make it stable.

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The mass of the object is approximately 0.457 kg.

The mass of the object attached to the trolley can be calculated using the principle of conservation of momentum. Since the two trolleys couple together and move as a single system after the collision, the total momentum before and after the collision should be the same. Given the mass of one trolley is 0.80 kg and the initial speed is 1.1 m/s, the momentum before the collision is 0.80 kg * 1.1 m/s = 0.88 kg·m/s. After the collision, the total mass is the sum of the two trolleys, and the final speed is 0.70 m/s.

Using the momentum equation, the mass of the object can be calculated as follows:

Total momentum before collision = Total momentum after collision

0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s

Solving for the mass of the object, we get:

0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s

0.88 kg·m/s = 0.56 kg + 0.70 kg * mass of the object

0.88 kg·m/s - 0.56 kg = 0.70 kg * mass of the object

0.32 kg = 0.70 kg * mass of the object

Dividing both sides by 0.70 kg, we find:

mass of the object = 0.32 kg / 0.70 kg = 0.457 kg

The two trolleys collide and couple together, the total momentum before the collision is equal to the total momentum after the collision according to the principle of conservation of momentum.

The momentum of an object is defined as the product of its mass and velocity. In this case, the mass of one trolley is known (0.80 kg) and the initial speed is given (1.1 m/s), allowing us to calculate the momentum before the collision.

After the collision, the two trolleys move together at a new speed (0.70 m/s). By setting the initial momentum equal to the final momentum and solving for the unknown mass of the object, we can find its value.

In the calculation, we subtract the masses of the two trolleys from the total mass in order to isolate the mass of the object.

Dividing the difference in momentum by the product of the known mass and the new speed, we obtain the mass of the object. In this case, the mass of the object is approximately 0.457 kg.

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Answer:

24 Newtons

Explanation:

The force exerted in the middle cube needs to be enough to move the middle cube and the right cube with an acceleration of 2 m/s2.

The mass of those two cubes combined is 6 + 6 = 12 kg

So, using the following equation, we can find the force:

Force = mass * acceleration

Force = 12 * 2

Force = 24 Newtons

Answer:

Pretty sure that the they both go backwards because of the basketballs motion

Answer:

One girl had thrown a ball to other girl . Since , she must have an exerted a force on ball in order to throw it to other girl, that ball will exert an equal and opposite force on the other girl according to newton's law which states every action have equal and opposite reaction .In result of what other girl felt an force .

Newtons law of motion states that every action have an equal and opposite reaction. If an object A exert a force on object B must exert a force of equal magnitude and opposite direction back on object A .

In question it is said that ,one girl had thrown a ball to other girl . Since , she must have an exerted a force on ball in order to throw it to other girl, that ball will exert an equal and opposite force (because of newton's law ) on the other girl .In result of what other girl fell an force .

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Answer:

P = 7.61kW

Explanation:

In order to calculate the power delivered by the elevator motor, you take into account the work done by the elevator against the gravitational force.

The work done by the elevator is given by:

\(W_g=(F-Mg)h=Mah\)     (1)

F: force of the motor

M: mass of the elevator = 712 kg

g: gravitational force = 9.8 m/s^2

h: vertical distance traveled by the elevator

a: acceleration of the elevator

You calculate the acceleration a by using the following formula:

\(a=\frac{v}{t}=\frac{1.93m/s}{3.13s}=0.616\frac{m}{s^2}\)       (2)

With this values you can calculate F from (1)

\(F-Mg=Ma\\\\F=Ma+Mg=(712kg)(0.616+9.8)m/s^2=7416.19N\)     (3)

Furthermore, you have that the work is equal to the change in the kinetic energy:

\(Mah=\frac{1}{2}M(v^2-v_o^2)\)     (2)

v: final speed of the elevator = 1.93 m/s

vo: initial velocity = 0 m/s

From the equation (2) you can calculate the vertical distance h:

\(h=\frac{v^2}{2a}=\frac{(1.93m/s)^2}{2(0.616m/s^2)}=3.02m\)

Then, the work done by the elevator is

\(W_e=Fh=(7416.19N)(3.02m)=22422.53J\)

The quotient of the work We and time (3.13 s) is the power delivered by the motor:

\(P_e=\frac{W_e}{t}=\frac{22422.53J}{3.13s}=7613.74W\approx7.61kW\)

The power delivered by the elevator is 7.61kW

The two analogies in question are:

The strengths of the water analogy are that it is easy to understand and it can be used to explain how current flows through a circuit. The water flows from a high point to a low point, just like current flows from a high voltage to a low voltage. The water can also be blocked by obstacles, just like current can be blocked by resistors.

The limitations of the water analogy are that it is not very accurate. Water is a liquid, while current is a flow of electrons. Electrons are very small and they do not behave like water molecules. For example, electrons can pass through each other, while water molecules cannot.

The strengths of the crowd analogy are that it is more accurate than the water analogy. Crowds of people can be used to explain how current flows through a circuit, how current is blocked by resistors, and how current can be amplified by capacitors.

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The concrete walls' strength, stability, and resistance to water and fire damage can help to reduce the effects of natural phenomena on buildings.

Concrete home construction gives a wall structure that is more durable than steel and wood. Concrete walls do not deteriorate when exposed to moisture from wind-driven rain, diffusion, or airflow. Contrary to steel, concrete does not rust when exposed to moisture. Termites are resistant to concrete barriers.

Powerful building materials like steel and concrete support the home's façade, and ceilings made of western red cedar temper the industrial style inside. These constructions are resistant to natural calamities since they are constructed of sandbags, barbed wire, and soil.

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Answer:

Physics is applied every where? For example if you talking with you friends, that mean the sound that you produce oscillate through your friends' ear so he/ she can respond to you.

Explanation:

Physics is the fundamental unit about understanding the world around us.

There are several phenomena in our day-to-day life from the formation of the rainbow to the free falling of objects under the influence of gravity physics is applied almost everywhere.

Science is the methodical, empirically-based pursuit and application of knowledge and understanding of the natural and social worlds.

Physics is a useful tool for seeing the real world, which is far larger than we can imagine. In every conceivable way, it describes the environment we live in. Almost all human activities, including walking, eating, and listening to music, require physics. Everywhere we look, there is physics.

In daily life, we encounter a number of events, such as the rainbow's emergence and items falling freely as a result of gravity. Nearly everywhere uses physics.

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