The left end of a horizontal spring (with spring constant k = 36 N/m) is anchored to a wall, and a block of mass m = 1/4 kg is attached to the other end. The block is able to slide on a frictionless horizontal surface. If the block is pulled 1 cm to the right of the equilibrium position and released from rest, exactly how many oscillations will the block complete in 1 second? 12/π O TU/6 7/12 6/1

Answer:

coal

Explanation:

Frank Schuman's solar power invention to create steam that will drive the turbine to generate electricity was not accepted in the United State back then because coal, a non-renewable energy source, was available for cheap and can easily be burned to generate steam.

Since the coal was readily available for cheap and back then, the deposit was huge to the extent that no one was thinking that it could get exhausted one day or the environmental pollution created through its burning, the invention of Schuman did not get the desired attention.

The composite figure is a combination of a rectangular pyramid and a rectangular prism, hence its volume is 140in³.

A rectangular prism is simply a three dimensional solid shape with six faces that are rectangles.

Volume of a rectangular prism is expressed as;

V = w × h × l

Where l is length, h is height and w is width

A rectangular pyramid is simply a three-dimentional object with a rectangular shaped base and triangular shaped faces that correspond to each side of the base.

The volume of rectangular pyramid is expressed as;

V = (1/3) × l × w × h

Where l is the base length, w is the base width and h is the height of the pyramid.

From the diagram below;

First we calculate the volume of a rectangular prism.

V = w × h × l

V = 3in × 4in × 7in

V = 84in³

Hence, the volume of the rectangular prism is 84in³.

Next, we calculate the volume of rectangular pyramid.

V = (1/3) × l × w × h

V = (1/3) × 7in × 3in × 8in

V = (1/3) × 168in³

V = 56in³

Hence, the volume of the rectangular pyramid is 56in³.

Volume of the composite figure = Volume of prism + Volume of pyramid

Volume of the composite figure = 84in³ + 56in³

Volume of the composite figure = 140in³

Therefore, the composite figure is a combination of a rectangular pyramid and rectangular prism, hence its volume is 140in³.

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70 degrees

90 - 20 since angle of incidence is the complement of the angle it strikes with.

Answer:

Density=mass/volume.

8.96=98.2/volume.

volume=98.2/8.96=10.95982143 ~ 11cm^3.

The volume of a sample of copper of 98.2 g would be 10.95 ml if the density of copper is 8.96 g/mL.

It can be defined as the mass of any object or body per unit volume of the particular object or body. Generally, it is expressed as in gram per cm³ or kilogram per meter³.

Due to their superior electrical and thermal conductivities, remarkable resistance to corrosion, and simplicity of production, copper alloys are frequently employed. In general, copper alloys are not magnetic. Electrical wire, cable, contacts, and other components.

As given in the problem the density of copper is 8.96 g/mL, and we have to find the volume occupied by the sample of copper.

mass = density×volume

98.2 g  = 8.96 g/mL×volume

volume =98.2/8.96

            =10.95 ml

Thus, the volume of a 98.2 g sample of copper would be 10.95 ml.

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Your ideal heart rate for vigorous intensity physical activity should be between 77% and 93% of your maximum heart rate. here option A is correct.

You should feel like you can do the activity for a longer period of time while the intensity is still low. You can educate your body to exercise for extended periods of time in this zone, which is all about increasing your endurance. Active Intensity. In general, you won't be able to speak for more than a few words without pausing to take a breath if you're engaging in vigorous-intensity activities. Running, jogging, or race walking. The American Heart Association recommends working at 70 to 85 percent of your maximal heart rate for a vigorous activity. Running is an example of a rigorous workout. at least 10 mph when cycling. carrying a large bag while moving quickly uphill.

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Answer:

1176.798 J

Explanation:

[] Use the following equation:

U = mgh

m - mass

g - gravitational field

h - height

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Answer:when a body possesses more than one simple motion, it is called a multiple motion.

Explanation:you are traveling by a train. Your wrist watch is also sharing the linear motion of the train. But the hands of the watch are also undergoing rotational motion. Thus they have 2 kinds of motion, I, e, Multiple motion.so also the blades of the fan in the train have multiple motion (a linear motion of the train and the rotation).

Answer:

Explanation:

Potential energy is when a object is not in motion and the ball is sitting on a shelf not being thrown around or rolling. kinetic energy is when a obeject is in motion and moving.

The radio signal would reach Earth before the light signal if both signals were transmitted simultaneously from a nearby star. When a signal is transmitted, it travels at the speed of light through the medium it propagates in.

In the vacuum of space, both light and radio waves travel at the same speed, which is approximately 299,792,458 meters per second (or about 186,282 miles per second). Therefore, the speed of light and radio signals are identical.

If a light signal and a radio signal were transmitted simultaneously from a nearby star, they would both travel toward Earth at the same speed. However, the distance between stars and Earth is vast, so even though the signals travel at the same speed, the radio signal would reach Earth before the light signal.

This is because light travels in a straight line, while radio waves can be influenced by various factors, such as interstellar dust, gas, and other celestial objects. These factors can cause radio waves to scatter or be absorbed, slowing down their journey through space. On the other hand, light, being a higher-frequency electromagnetic wave, is less affected by such interstellar objects and can travel relatively unimpeded.

Thus, due to the potential obstacles that radio waves may encounter while traveling through space, the radio signal would arrive at Earth before the light signal if both were transmitted simultaneously from a nearby star.

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Answer:

1762.04J

Explanation:

Given parameters:

Mass of counterweight  = 58kg

Height  = 3.1m

Unknown:

Amount of potential energy  = ?

Solution:

The potential energy of a body is the energy due to the position of the body.

It is given as:

 Potential energy  = mass x acceleration due to gravity x height

So;

 Potential energy  = 58 x 9.8 x 3.1  = 1762.04J

Answer:

a. Potential energy decreases and Kinetic energy increases

Explanation:

Because as he comes down due to its steepness the speed of the boy or you can say his KE increases and since he comes from a high position (hill) to the lower ground his potential energy decreases simultaneously

Answer:

Potential energy decreases and kinetic energy increases.

Explanation:

That was the answer on my CK12

why freezer is made in the upper part of refrigrator

the cold air produced from it is denser than the warmer air in the bottom

Freezer is normally provided at the top of the refrigerator, because density of the cold air is high compared to the hot air. In a refrigerator the air contacts with the cooling coil and gets cooling.Because of the high density the cold air gets down and the warm air/hot air moves upward and gets cooling from the cooling coil/evaporator coil. This process is repeated. If the Freezer is provided at the bottom place of the refrigerator, the cold air can't to move full area of the refrigerator. So the freezer is normally provided at the top at the refrigerator

Answer:

Work = Work out

Work in = 5 N * d     where d is the distance the handle travels

Work out = 50 N * 7 m = 350 Joules

d = 50 N * 7m / 5 N = 70 m

This is the distance traveled by the force of 5 N

A man lifts a bucket of water from a well that is 7 meters deep. The bucket and water together weigh 50 Newtons. He turns the crank handle with a force of 5 Newtons. The effort force is 70 Newtons.

If a force is applied for a machine to move or change the position of the object is known as Effort force.

The effort force formula can be described as,

Fe = Fl. dl / de

Fe is effort force (N, lb)

Fl is load force (N, lb) (note that weight is a force)

dl is distance from load force to fulcrum (m, ft)

de is distance from effort force to fulcrum (m, ft)

Here, the given data to find the effort force is,

Fl =50 Newtons

dl = 7 meters

de = 5 Newtons.

Substituting all the values, we get,

Fe = 350/5

Fe = 70 Newtons.

Thus, the effort force is 70 Newtons.

Hence, Option A is the correct answer.

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Terminal velocity of the package is 5.16 m/s

When the object's drag force is equal to the gravitational force then it experiences zero acceleration and so the velocity remains constant. Such constant velocity is called as terminal velocity.

Drag force is a kind of frictional force that opposes the flow of motion.

Mathematically drag force F = \(\frac{1}{2}\)ρA\(v^{2}\)

ρ = density of the package = 1.2 kg/\(m^{3}\)

A = 25 \(m^{2}\)

v = terminal speed

Also Force is the product of mass and acceleration

Mathematically F = ma

where

m = 44 kg

a = 10 m/\(s^{2}\)

Therefore, F = 44 * 10 = 400 N

Putting value of F in the drag force equation we get,

400 =  \(\frac{1}{2}\)ρA\(v^{2}\)

400 =  \(\frac{1}{2}\) * 1.2 * 25 * \(v^{2}\)

\(v^{2} = \frac{400*2}{1.2 * 25}\)

\(v^{2} = \frac{800}{30}\)

v = \(\sqrt{26.66}\)

v = 5.16 m/s

The terminal speed of the package if the parachute has an area of 25 \(m^{2}\) is 5.16 m/s.

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Explanation:

when a positive charged object is placed near a conductor electrons are attracted the object when electric voltage is applied an electric field within the metal triggers the movement of the elections making them shift from one end to another end of the conductor electrons will move toward the positive side

No, the food handler should not serve the soup based on the provided temperature reading of 139°F (59°C).

Food safety guidelines typically recommend that hot-held foods should be kept at a temperature of 140°F (60°C) or above to prevent bacterial growth and ensure food safety. Since the temperature of the soup is slightly below this recommended threshold, it may not be considered safe for serving.

To comply with food safety standards, the food handler should take the following steps:

1. Check the accuracy of the thermometer: Ensure that the thermometer used to measure the soup's temperature is calibrated correctly and providing an accurate reading. Inaccurate thermometers can lead to misleading temperature measurements.

2. Reheat the soup: If the thermometer is accurate and the soup temperature is indeed 139°F (59°C), the food handler should reheat the soup to bring it back up to a safe serving temperature. The soup should be heated to at least 140°F (60°C) or above to ensure that any harmful bacteria are destroyed.

3. Monitor and maintain temperatures: After reheating the soup, the food handler should continue to monitor and maintain its temperature throughout the service period. This can be achieved by using appropriate hot-holding equipment, such as hot plates, steam tables, or heated soup pots, that can keep the soup at a safe temperature above 140°F (60°C).

It's essential to prioritize food safety to prevent the risk of foodborne illnesses. Therefore, the food handler should follow proper temperature control practices and guidelines to ensure the safety of the soup being served.

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Explanation:

v = IR

v= 160 R = 2

160 = 2I

2 2

I = 80A

The bigger fragments in gel electrophoresis are predicted to go the shortest distance from the well. This is due to the fact that gel electrophoresis divides DNA or other biomolecules according to their charge and size.

An electric field is spread over the gel matrix during electrophoresis. DNA molecules that are negatively charged move in the direction of the positive electrode. The gel matrix nevertheless functions as a molecular sieve, restricting the flow of bigger molecules more so than smaller ones.

Larger pieces move slower than smaller fragments because they encounter more resistance as they move through the gel matrix. As a result, they move closer to the positive electrode from the well than smaller fragments do because they can move through the gel's pores more readily.

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1. The absolute magnitude of the reduction in variation of Y when time is introduced into the regression model can be calculated by subtracting the variance of Y in the original model from the variance of Y in the new model.

2. The relative reduction can be calculated by dividing the absolute magnitude by the variance of Y in the original model.

3. The latter measure is called the coefficient of determination or R-squared and represents the proportion of variance in Y that can be explained by the regression model.

When time is introduced into a regression model, it can have an impact on the variation of the dependent variable Y. The absolute magnitude of this reduction in variation can be measured by calculating the difference between the variance of Y in the original model and the variance of Y in the new model that includes time. The relative reduction in variation can be calculated by dividing the absolute magnitude of the reduction by the variance of Y in the original model.
The latter measure, which is the ratio of the reduction in variation to the variance of Y in the original model, is called the coefficient of determination or R-squared. This measure represents the proportion of the variance in Y that can be explained by the regression model, including the independent variable time. A higher R-squared value indicates that the regression model is more effective at explaining the variation in Y.

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To calculate the current through the bulb, we can use Ohm's Law, which states that the current (I) flowing through a resistor is equal to the voltage (V) across the resistor divided by its resistance (R).

Given:

Power (P) of the bulb = 75.9 W

Voltage (V) = 120 V

The power of the bulb can also be expressed as the product of voltage and current:

P = V * I

Rearranging the equation, we get:

I = P / V

Substituting the given values into the equation:

I = 75.9 W / 120 V

Calculating the division will give us the current through the bulb.

Please note that the unit of current is Amperes (A).

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The current flowing through the bulb is approximately 0.6325 Amperes.

To determine the current through the bulb, you can use Ohm's law, which states that the current (I) flowing through a resistor is equal to the voltage (V) across the resistor divided by its resistance (R). In this case, the bulb can be considered a resistor.

Given:

Power (P) = 75.9 W

Voltage (V) = 120 V

The formula for power is given by P = IV, where I is the current. Rearranging the formula, we have I = P/V.

Substituting the given values:

I = 75.9 W / 120 V ≈ 0.6325 A

Therefore, the current flowing through the bulb is approximately 0.6325 Amperes.

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Answer:

Based on the properties electrically charged particles, we have that unlike charges attract and like charges repel each other. In order for proper application of an electrostatically negatively charged paint to be properly applied on the metal body surface of a vehicle, require that for attraction, the surface of the vehicle should be grounded and positively charged so as to effectively attract the negatively charged paint particles as it exits the nozzle, to form a strong attachment with the positively charged surface of the vehicle

Explanation:

D. Chemical energy stored in the bonds of the molecules of the sandwich is transformed into kinetic energy. This statement describes the energy transformation that occurs when a person eats a sandwich to gain energy for a long hike

Law of energy conservation states that energy can neither be created nor be destroyed and can only transform from one form to other form.

From Law of energy conservation we can say that Digestion starts from that very point when we put food in our mouth so the moment you eat the sandwich, it starts getting digested and when it reaches the stomach ,your body converts its chemical energy into the movement of your muscles.

hence , correct option is :

D. Chemical energy stored in the bonds of the molecules of the sandwich is transformed into kinetic energy.

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Answer:

T = 0.83 seconds

Explanation:

Given that,

The mass attached to the spring, m = 1.5 kg

The amplitude of the spring, A = 0.3 m

The spring constant of the spring, k = 85 N/m

We need to find the period of the mass's motion. The time period in spring mass system is given by :

\(T=2\pi \sqrt{\dfrac{m}{k}} \\\\T=2\pi \sqrt{\dfrac{1.5}{85}} \\\\T=0.83\ s\)

So, the period of the mass's motion is 0.83 seconds.

Answer:

20 m/s

Explanation:

the final velocity of the car = 20 m/s

Change in the velocity = final velocity - initial velocity

Change in the velocity= 20 - 0

= 20 m/s

Thus, the change in the velocity would be 20 m/s.

Answer:

\(a=0.125\ m/s^2\)

Explanation:

Given that,

Mass, m = 40 kg

The net force with which Joyce pushes Efua is 5 N.

We need to find Efua’s resulting acceleration. Let it is equal to a. Net force is given by :

F = ma

\(a=\dfrac{F}{m}\\\\a=\dfrac{5\ N}{40\ kg}\\\\a=0.125\ m/s^2\)

So, the acceleration is \(0.125\ m/s^2\).

The resulting acceleration of Efua is  \(0.125 \;\rm m/s^{2}\).

Given data:

The mass of Efua is, m = 40.0 kg.

The magnitude of applied force by Joyce is, F = 5.00 N.

The given problem is based on the Newton's Second law of motion. As per the Newton's second law, the applied force is equal to the product of mass and the acceleration of object. Therefore,

F = ma

a = F/m

Solving as,

a = 5.00 / 40

\(a = 0.125 \;\rm m/s^{2}\)

Thus, we can conclude that the resulting acceleration of Efua is  \(0.125 \;\rm m/s^{2}\).

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The duration of the light pulse measured by the pilot of the spaceship is approximately 13.9 µs.

we'll need to consider the concepts of time dilation and the speed of light (c) in the context of special relativity.

Given:
- Speed of the spaceship relative to Mars: 0.985c
- Time measured on Mars: 70.0 µs

Step 1: Calculate the Lorentz factor (γ) using the formula:
γ = 1 / sqrt(1 - (v^2 / c^2))

where v is the speed of the spaceship (0.985c) and c is the speed of light.

Step 2: Plug the values into the formula:
γ = 1 / sqrt(1 - (0.985c)^2 / c^2)
γ ≈ 5.026

Step 3: Calculate the time duration (Δt') measured by the pilot using the time dilation formula:
Δt' = Δt / γ

where Δt is the time measured on Mars (70.0 µs) and γ is the Lorentz factor.

Step 4: Plug the values into the formula:
Δt' = 70.0 µs / 5.026
Δt' ≈ 13.9 µs

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Assuming v2 = v1 = v0 = 5 volts, then vout = 35 volts. So, vout = 35.000 volts.

The output voltage, v_{out}, can be calculated by using the formula v_{out} = v_2 \times 2^2 + v_1 \times 2^1 + v_0 \times 2^0.

In this case, since all of the input voltages are equal to 5 volts, we can substitute 5 for v_2, v_1, and v_0 in the formula:

v_{out} = 5 \times 2^2 + 5 \times 2^1 + 5 \times 2^0

v_{out} = 20 + 10 + 5

v_{out} = 35

Therefore, the output voltage, v_{out}, is equal to 35 volts. To express this value with three decimal places, we can write it as 35.000 volts. So the final answer is:

v_{out} = 35.000 volts

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Answer:

In an year about 6 major hurricanes and 3 minor storms occurs.

Explanation: