Let's Examine the Three Laws of Motion
Directions: Read each example below and identify which law of motion it is
following.
1. If you blow up a balloon, and then release it. the balloon will fly away.
2. When two balls collide, two balls on the opposite end will also move.
3. Two teams are playing tug-a-war and team A wins because of unbalanced forces.
4. A skateboarder will remain in motion while going down a hill until it is stopped by an outside
force.__
5. In a catapult, it is easier to launch a stone weighing 60 kg than it is to launch a stone weighing
600 kg..
6. A dog asleep will remain sleeping until it is woken up..

Answer:

3.6263736 * 10^-11 m

Explanation:

Considering the following equation,

λ = \(\frac{h}{mv}\)

where h = 6.6 * 10^-34 and m = mass, and v = velocity

λ = (6.6 * 10^-34)/(2 * 10^7 * 9.1 * 10^-31)

= 3.6263736 * 10^-11 m

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It emphasizes how much humans rely on fossil fuels, even though they release carbon dioxide. So, option B.

Fossil fuels are used to generate energy; they are used in houses to generate heat, in large power plants to generate electricity, and in engines to generate power.

80 percent of the world's primary energy demand is currently met by fossil fuels, and the energy system is responsible for about two thirds of all CO2 emissions in the world.

Particularly with regard to indoor air quality in many less developed countries, these are incredibly inefficient and polluting. Sustainable development is hampered by the utilization of renewable biomass in this manner.

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conductivity and resistivity are two closely related properties that describe how materials conduct electricity. Conductivity and resistivity are two properties of materials that describe how they behave in response to an electric field.

Resistivity is the inverse of conductivity, and it is defined as the resistance of a material of unit length and unit cross-sectional area. In other words, resistivity is a measure of the intrinsic property of a material to oppose the flow of electric current. It depends on the type and amount of impurities in the material, its crystal structure, temperature, and other factors. Resistivity is commonly measured in ohm-meters.

Conductivity, on the other hand, is a measure of the ease with which a material can conduct electric current. It is the reciprocal of resistivity and is expressed in units of Siemens per meter (S/m). The higher the conductivity of a material, the easier it is for electric current to flow through it. Conductivity depends on the same factors as resistivity, but in the opposite way.

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Using a saltwater aquarium to model the ocean has limitations, such as showing only a small part of the actual ocean and being unable to replicate the vastness and complexity of the ocean ecosystem.

One limitation of using a saltwater aquarium to model the ocean is that it can only show a small part of the actual ocean. Since an aquarium is confined and limited in size, it cannot realistically replicate the vastness and complexity of the ocean ecosystem. For example, it may not have the space to accommodate large marine animals like whales or the turbulent currents that exist in the open ocean. Therefore, it is important to recognize that while a saltwater aquarium can provide some insights into the ocean, it cannot fully capture the dynamic nature and diverse interactions found within the entire ocean ecosystem.

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Answer:

0.054 kilograms

Explanation:

divide 54 by 1000

so, 54/1000=0.054 kilograms.

The linear speed due to the Earth's rotation for a person at a point on its surface located at 40 degrees N latitude is approximately 465.1 m/s.

The linear speed due to the Earth's rotation at a point on its surface can be calculated using the following formula:

v = r * ω * cos(θ)

where:

v is the linear speed

r is the radius of the Earth (\(6.40 x 10^6\) m)

ω is the angular velocity of the Earth's rotation (7.27 x \(10^-^5\) rad/s)

θ is the latitude of the point in radians (40 degrees N = 40° * π/180 = 0.6981 radians)

cos(θ) is the cosine of the latitude angle

Substituting the given values into the formula, we get:

v = (\(6.40 x 10^6 m\)) * (7.27 x \(10^-^5\) rad/s) * cos(40°)

v = 465.1 m/s

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First, take into account that the difference in time between the third chirp and the third echo is:

t = 0.10s - 0.02s = 0.08s

next, consider that in such a time, the sound emitted by the bat travels twice the distance in between the bat and the moth, then, you have:

2d = v*t

where v is the speed of sound 340 m/s

solve the equation above for d, and replace the values of the previous parameters, as follow:

d = v*t/2

d = (340 m/s)(0.08 s)/2

d = 13.6 m

Hence, the distance between the moth and the bath is 13.6 m

The experiment is not accurate since the both rats get the tranquilizer and there is no control setting.

The quest for data and information is what would cause a scientist to perform an experiment. We know that an experiment is one that an experiment is one that we have to find the effect of the independent variable on the dependent variable.

In this case, the independent variable is the administration of the dose of the drug while the dependent variable is the number of hours that the pet rats are made to sleep.

Let us note that an experiment ought to have a control setting. The control setting of the experiment is what would serve to validate the experiment as we know. We can see that this experiment does not have a control setting therefore it is not accurate. This experiment would need to be reviewed a control setting should be added.

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By resolving forces into their components and adding them together, you can determine the resultant force in the x and y directions without knowing the actual variables involved.

To find the summation of Fx and summation of Fy without knowing the specific variables, you need to have information about the forces acting on an object in the x and y directions. If you have the magnitudes and directions of individual forces, you can use vector addition to determine the resultant force in each direction.

Here's a general approach to finding the summation of Fx and Fy:

Identify the forces: Start by identifying all the forces acting on the object and their directions. Each force can be represented as a vector with a magnitude and direction.

Resolve forces: If the forces are not already given in the x and y directions, you need to resolve them into their x and y components. Use trigonometry (sine and cosine) to determine the components of each force along the x-axis (Fx) and the y-axis (Fy).

Sum the components: Add up all the individual components of forces acting in the x-direction to find the summation of Fx. Similarly, add up all the individual components of forces acting in the y-direction to find the summation of Fy.

Summation of Fx = F1x + F2x + F3x + ...

Summation of Fy = F1y + F2y + F3y + ...

Combine components: If there are forces acting at an angle to the x and y axes, you can use the Pythagorean theorem and trigonometry to find the resultant force in each direction.

Summation of Fx = √(F1x^2 + F2x^2 + F3x^2 + ...) (taking into account both magnitudes and directions)

Summation of Fy = √(F1y^2 + F2y^2 + F3y^2 + ...) (taking into account both magnitudes and directions)

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For the radio transmission tower of a given height, the length of the wire attached to the feet is 78.2 feet.

The radio transmission tower is feet tall, a guy wire is to be attached feet from the top and make an angle with the ground. We will need to find out how long the guy wire needs to be attached to the radio transmission tower. Using a right triangle, we have the following information:

The base of the right triangle is the height of the tower where the wire is attached = h = feet

The hypotenuse is the length of the guy wire = x

We have an angle in the right triangle, and we can use the trigonometric function tangent to solve for the unknown side of the triangle.

The tangent function is defined as follows:

tan(θ) = Opposite side/Adjacent side

x = h/tan(θ)

Let h = 150 ft and θ = 62°

Substitute the values of h and θ in the above formula to obtain: x = (h/tan(θ)) = (150)/tan (62) = 78.2 feet (rounded to the nearest tenth of a foot)

Therefore, the length of the guy wire needs to be approximately 78.2 feet.

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Answer:

On the other hand, power is a scalar quantity and is basically the amount of energy consumed per unit time which has no direction.

Horsepower HP 746 watts

Kilowatts kW 1×103W

Megawatts MW 1×106W

Gigawatts GW 1×109W

The S.I unit of power is Watt(W) which is joule per second.

Answer:

0.09 kg

Explanation:

f=0.27

a=3

m=f/a

m=0.27/3

m=0.09

Answer: C. Metals are found on the left side of the periodic table.

Explanation:

The periodic table contains vertical columns called as groups and horizontal rows called as periods.

Period 2 contains 8 elements which are lithium, beryllium , boron , carbon, nitrogen, oxygen , fluorine and neon. Only Lithium and beryllium are metals.

Group 18 contains all the noble gases which are all non metals.

Metals are the elements which loose electrons easily and form positive ions. Non-metals are the elements which can gain electrons easily and form negative ions.

Metals are present on left side of the periodic table and as we move to right side of the periodic table , the metallic character decreases and thus non metals are found on the right side of the periodic table.

it would be on the right end I believe. Forgive me if I am incorrect.

Answer:

I think it's 7 × 10²

Explanation:

0.0035 time 200000 is 700 and 700 in scientific notation is 7 × 10²

Though i'm not certain if that is correct

Answer:

the only acceleration it has is radial (centripetal)

Explanation:

The microwaves plate rotates at a constant speed after a very short period of acceleration.

Therefore we can apply Newton's second law

        F = m a

where the acceleration is centripetal

         a = v2 / r = w2 r

therefore as it rotates constant speed it cannot have a tangential acceleration since it changes the modulus of the speed.

Consequently the only acceleration it has is radial (centripetal)

Answer: 10^23

Explanation:10 times 10

Answer:

I believe A, if I'm wrong please inform me!!!

Explanation:

a. It would take 160 Joules of work to lift the fridge of wigs without a simple machine. b. It would take an effort force of 50 Newtons to lift the fridge of wigs.

Work is defined as the transfer of energy that occurs when a force is applied to an object and the object is moved through a distance in the direction of the force.

a. The work required to lift the fridge of wigs without a machine can be calculated using the formula:

Work = Force x Distance

Here, the force required to lift the fridge without a machine is 80 Newtons and the distance to be lifted is 2 meters. Therefore, the work required is:

Work = 80 N x 2 m = 160 Joules

So, it would take 160 Joules of work to lift the fridge of wigs without a simple machine.

b. With a lever having a mechanical advantage of 4, the effort force required to lift the fridge can be found using the formula:

Effort Force = Load Force / Mechanical Advantage

Here, the load force is the weight of the fridge, which is not given in the problem. Assuming the weight of the fridge is 200 Newtons (which is just an assumption and not given), the load force would be:

Load Force = Weight of Fridge = 200 N

The mechanical advantage of the lever is given as 4. Therefore, the effort force required to lift the fridge would be:

Effort Force = Load Force / Mechanical Advantage = 200 N / 4 = 50 Newtons

So, assuming the weight of the fridge to be 200 N and using a lever with a mechanical advantage of 4, it would take an effort force of 50 Newtons to lift the fridge of wigs.

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Answer:

-24650580. maybe I think

The initial momentum of block X is 6 kgm/s to the right (positive direction).The initial momentum of block Y is 3 kgm/s to the left (negative direction).As momentum is As momentum is conserved,,

The total momentum before the collision is equal to the total momentum after the collision. Therefore:
Initial momentum = final momentum
(2 kg)(3 m/s) + (1 kg)(−3 m/s) = (2 kg)(−1 m/s) + (1 kg)v
Simplify and solve for v:
v = (2 kg)(3 m/s + 1 m/s)/(1 kg) = 8 m/s.

Therefore, the speed of block Y after the collision is 8 m/s in the positive direction. In conclusion, the speed of block Y after the collision is 8 m/s in the positive direction.

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Explanation:

The Kelvin, Celsius, and Fahrenheit scales are the three temperature scales that are most widely used. In most physical experiments the Celsius scale is used to take common measurements, but the Kelvin scale is used for most calculations.

Transformer-Rectifier units for CAC-A (Constant Current Arc Welding) should have a minimum of 60% duty cycle, with at least three-phase units.

Constant Current Arc Welding is also known as "stick welding." The acronym CAC stands for "constant current," which means the power source must be able to produce a constant output current, regardless of the resistance of the welding arc.

To create the appropriate current for the welding, a transformer-rectifier is used. A transformer-rectifier unit comprises of a transformer and a rectifier. The transformer converts high voltage, low current AC electricity from the power source to low voltage, high current AC electricity, which is then supplied to the rectifier. The rectifier transforms the AC input into a direct current (DC) output that the welding equipment requires.

The duty cycle is defined as the amount of time during which the machine can operate without overheating. The transformer-rectifier should have a 60% duty cycle or higher because welding generates a lot of heat and needs a lot of power. If the duty cycle is too low, the unit will shut down too often and be unable to perform effectively.

A 60% duty cycle ensures that the welding machine can run continuously for six minutes out of every ten minutes. It is recommended that you choose a transformer-rectifier with a duty cycle that meets your requirements, as a higher duty cycle would allow you to weld for longer periods of time before requiring a cool down period.

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Answer:

kinetic mechanical energy

Answer:

Those sound waves are called kinetic mechanical energy

Explanation:

Sound energy is the result when a force, either sound or pressure, makes an object or substance vibrate. That energy moves through the substance in waves. Those sound waves are called kinetic mechanical energy.

The car moving on a circular path with a linear velocity of 200m/s has an angular velocity of 6π radians per second and moves on a circle with a radius of approximately 10.61 meters.

The linear velocity of the car moving on a circular path is given as 200m/s. The motion of a particle moving on a circular path is characterized by its angular velocity, which is defined as the rate at which the particle moves around the circle. The angular velocity is expressed in units of radians per second.

Given that the car makes three revolutions per second, we can calculate its angular velocity as follows:

Angular velocity = (2π × number of revolutions per second)

= (2π × 3) radians per second

= 6π radians per second

Thus, the angular velocity of the car is 6π radians per second.

The radius of the circle can be calculated using the formula:

Linear velocity = (radius × angular velocity)

Substituting the given values, we get:

200m/s = (radius × 6π radians per second)

Solving for radius, we get:

Radius = (200m/s) ÷ (6π radians per second)

≈ 10.61 meters

Thus, the radius of the circle is approximately 10.61 meters.

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Answer:

Energy implies as the object’s capability to perform work. It is something that cannot be created or destroyed but can only be transformed. An object loses its energy, when it performs work, whereas it gains energy when the work is performed on it. Energy is broadly classified as kinetic energy and potential energy. While kinetic energy is the energy which an object contains because of a particular motion.

On the other hand, potential energy is the stored energy, because of its state of rest. As both the two forms of energy are measured in joules, people get easily confused between these two. So, take a read of the article which will help you to understand the differences between kinetic and potential energy.

Explanation:

Hope this helps - Good luck ^w

Answer:

Energy stored in an object due to its position is Potential Energy. · Energy that a moving object has due to its motion is Kinetic Energy.

Explanation: