You are on top of a building that is 75.0 m tall. You toss a ball straight up with an initial velocity of 33.8m / s How high does the ball travel? It goes up and then falls down to the ground below. How much time is it in the air?

The charge will the potential be 200 V = 2.23 x 10⁸ C

Given:

r = 1.00 μC

v = 200V

K = 8.988 x 10⁹ NM²/C²

Charge, also known as electric charge, electrical charge, or electrostatic charge, is a property of a unit of matter that shows how many more or fewer electrons than protons it possesses. It is represented by the symbol q.

A body that feels a force in an electric field has a property called charge. It is more useful to speak of bundles of electrons because individual electrons are so tiny and have little impact.

The formula for find how far from a 1.00 μC point charge will the potential be 200V.

V = kq / r

q = rV/ K

Charge = (1.00 x 10⁻³m)(200)/ 8.988 x 10⁹ NM²/C²

            = 2.23 x 10⁸ C

So, The charge will the potential be 200 V = 2.23 x 10⁸ C

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Answer:

The rescue workers can get energy to the batteries in their equipment during rescue missions by using a generator to convert the kinetic energy to potential energy. Potential energy is then stored in the battery.

Explanation:

The baseball with the greater acceleration is baseball A

Force and acceleration are related according to the following formula:

Force (F) = mass (m) × acceleration (a)

F = ma

F = ma

Divide both sides by m

a = F / m

a = 100 / 0.25

Acceleration of A = 400 m/s²

F = ma

Divide both sides by m

a = F / m

a = 100 / 0.3

Acceleration of B = 333.33 m/s²

From the above calculations, we obtained:

Thus, baseball A has the greater acceleration

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The time taken is √3 s and the velocity with he lands is 17.3 m/s.

In this case, we have to use the equations of kinematics as it has to do with motion under gravity. We know that;

h = ut + 1/2gt^2

h = height

u = initial velocity

g = acceleration due to gravity

t = time taken

Given that u = 0 m/s because the object was dropped from a height.

h = 1/2gt^2

t = √2h/g

t = √2 * 15/10

t = √3 s

The velocity with which he falls is obtained from;

v = u + gt

v = gt

v = 10 m/s^2 * √3 s

v = 17.3 m/s

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The depth of the mine shaft is Blank is 379.5 m.

Using,

d = (1/2) g t²

where,

g is gravity and t is time given,  

d = (1/2)(9.8)(77.44)

d = 379.5 m.

Gravity, also known as gravitational force, is the attraction between any two objects in the universe. The attraction force is proportional to the weight of the object and the sq of the distance among them. It is without a doubt the weakest known natural force. An invisible force that attracts objects to one another. Gravity is what continues to keep you on the ground and causes things to fall. An animation of gravity in action. Albert Einstein defined gravity as a space-time curve that wraps around an object like a star or planet.

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The car will travel only distance of 25.92 m.In order to overtake it needs to travel 40m. So don't attempt to pass the truck.

Vehicle speed is 25 m/s.

40m is the distance the automobile must go to pass the truck.Distance between the car approaching from the opposite direction and the passing location is 400-40, or 360 meters.

Time allowed for a car to pass a truck of 20 meters in length is equal to the distance between the automobile coming from the other direction and the relative speed of the two cars.

Time equals 360/50, or 7.2 seconds.

Let's assume that the truck is going at the same rate as the car.

The expression "distance traveled by car in comparison to truck"

S is the distance traveled, u is the initial velocity, an is the acceleration, and t is the amount of time spent, where S = ut +[tex]\frac{1}{2}at^{2}[/tex]

Here, u = 0, t = 7.2 s, and a = 1 m/[tex]s^{2}[/tex]

hence, the distance driven in 7.2 seconds

So,     S = 0+ 25.92 = 25.92 m

So car will travel only travel 25.92 m

In order to overtake it needs to travel 40m. So don't attempt to pass the truck.

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According to the given statement The voltage gradient between the plates is ​45.2kV/m

The Volt/meter (V/m) unit of measure for potential gradient is standard. Take a look at the graph between the potential gradient and distance. The potential gradient is strong when the object is close to or at a low distance from the high voltage wire; as you increase the distance, the gradient reduces.

Flux Density

D = 2μC/m²

D =2×10⁻⁶ C/m²

ε[tex]_0[/tex] = 8.85 × 10⁻¹² F/m

ε[tex]_r[/tex] = 5

D/E = ε[tex]_0[/tex]ε[tex]_r[/tex]   hence voltage gradient

E = D/ε[tex]_0[/tex]ε[tex]_r[/tex]

= [tex]\frac{2 \times 10^{-6}}{8.85 \times 10^{-12} \times 5} \mathrm{~V} / \mathrm{m}[/tex]

= 45.2kV/m

The voltage gradient between the plates is ​45.2kV/m

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The amount of energy used is known as energy consumption.

Find the energy-consumption rate for five electrical devices you use every day.

The following is the power consumption formula or energy consumption formula: E = P*(t/1000); where E is energy expressed in Joules or kilowatt-hours (kWh), P is power expressed in watts, and t is the duration of the consumption of the power or energy.

A lot of electricity is used by electrical appliances. Those that produce heat or have moving parts consume a lot more energy than those that do the same for light or sound.

A higher-wattage appliance actually uses less electricity overall than a lower-wattage one, because it is properly made and completes its task more quickly.

The following are some of the commonly used electrical devices in a daily household.

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Answer:

yes.

Explanation:

Answer:

yes

Explanation:i am THE Amalee

The magnitude of the acceleration experienced by Purley is -1749.82 m/s²

We'll begin by converting 173 Km/h to m/s. This can be obtained as follow:

3.6 Km/h = 1 m/s

Therefore,

173 Km/h = (173 Km/h × 1 m/s) / 3.6 Km/h

173 Km/h = 48.06 m/s

The following data were obtained from the question:

The acceleration can be obtained as follow:

v² = u² + 2as

0² = 48.06² + (2 × a × 0.66)

0 = 2309.7636 + 1.32a

Collect like terms

1.32a = 0 - 2309.7636

1.32a = -2309.7636

Divide both sides by 1.32

a = -2309.7636 / 1.32

a = -1749.82 m/s²

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The distance travelled by Bill in the first 2.5 s is 22.03 m

The following data were obtained from the question:

The distance travelled can be obtained as follow:

s = ut + ½at²

s = (0 × 2.5) + (½ × 7.05 × 2.5²)

s = 0 + (½ × 7.05 × 6.25)

s = 0 + 22.03

s = 22.03 m

Thus, the distance travelled in 2.5 s by Bill is 22.03 m

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The total distance traveled by the farmer is 60 and walking straight back to where he started he will travel 10 m.

Distance traveled is the total length of the path traveled between two positions.

Distance traveled is not a vector because it has no direction, so we say that distance is a scalar quantity.

If the farmer builds a 3 sections of fence, it will form a triangle of equal lengths.

If the distance between each section = 10 m

when the farmer travels from the initial position to the final position, and then back to the initial position, the total distance traveled by the farmer is calculated as follows;

d = 2(10 m + 10 m + 10 m)

d = 2(30 m)

d = 60 m

Thus, the total distance traveled by the farmer is 60 and walking straight back to where he started he will travel 10 m.

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The erosion of the limestone can result in all the following landforms except ridges.

weather -

Limestone - It is type of  minerals that could occur at a given place.

The presence of the limestone in a place is able to change or alter the landform or the arrangement of the land in a given area.

Some of these changes are very much significant and can be easily observed in an area where there is a Limestone bedrock. Landforms could be a characteristic of a place and we know that it could be used to identify a given area.

The erosion of the limestone can result in all the following landforms except ridges.

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Answer:

B. Ridges

Explanation:

Proof shown below

After an experiment, research participants are told its purpose and about any deception they may have experienced. This is called debriefing. So, the correct option is (c).

Debriefing is the act of reporting on a mission, project, or the data gleaned from it. After an activity or event, a structured procedure examines the actions performed.Debriefing is a methodical learning procedure created to help plans continually improve as they are being carried out.

Debriefing can be used as an example during an experiment when the researchers required to use some type of deception for the purpose of the study.

Debriefing has its roots in the military as a technique to learn quickly in rapidly changing situations and to correct mistakes or changes on the field. In this instance, the researchers would describe their reasoning for deception and the goal of the study during the debriefing session.

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When ever there is a change in Velocity, there will be Acceleration. Let us now understand the concept of Acceleration with illustrative examples.

Let's suppose I have a car moving with a constant Velocity of 90 km along a straight line. It can be seen that the helicopter flying at roughly a speed of 20,000 km.

using the equation of motion formula;

S = ut + 1/2 + at²

Given,

S = 94 m

t = 5 sec

U = 0 initial velocity

S = ut + 1/2at²

94 = 0 + 1/2a 5²

a = (94 × 2)/ 25

Acceleration = 7.52 m/s²

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Answer:

a positive form of stress having a beneficial effect on health, motivation, performance, and emotional well-being … during positive stress ("eustress"), such as a promotion or vacation, feel-good chemicals called endorphins are released

Explanation:

that is the answer

In a scientific experiment, an independent variable is a variable that is altered or controlled to see how it affects the dependent variable.

In a scientific experiment, the variable under test and being measured is known as the dependent variable.

The independent variable determines how reliant the dependent variable is. The impact on the dependent variable of changing the independent variable is tracked and documented by the experimenter.

An experimental component that remains constant and unaltered during the course of an investigation is known as a control variable in science.

Christian is interested in seeing how a student's performance on an exam is impacted by the amount of time they spent studying. He conducts a class survey and inquires about the amount of time each student spent studying.

The independent variable is the time they spent studying, the dependent variable is the amount of time studying and how it helps the test.

The controlled variable is the amount of time studying and how it helps the test.

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Answer:

temperature means the degree of hotness or coldness of the body

Explanation:

when the heatness is transferred by our body

we feel cold

for example if we touch ice

we feel cold

when the heatness is transferred to our body we feel hot

for example when we touch fire we feel hot

D) The system has external forces, such as friction and air resistance, acting on it.

According to Newton's first law, a change in motion is brought about by a net external force. External forces are forces that originate outside of an object or system and operate on it. Internal forces are generated within the studied system and do not result in acceleration. As a result, while analyzing an object's motion, we only take into account the exterior forces that cause it to accelerate, ignoring the interior forces.

The applied force, normal force, tension force, friction force, and air resistance force are examples of external forces. The internal forces, however, also include gravitational, magnetic, electric, and spring forces. A greater acceleration results from a greater net external force. The system's acceleration would thus be inversely proportional to the system's net external force.

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b) The motion will be either created, stopped, or changed.

An unbalanced force is said to act on an object if the sum of all forces acting on it is non-zero. This means that some force is acting on the object, so the object experiences an acceleration equal to F = ma.

Force Imbalance:

Thus, there will be some change in motion in the object if multiple forces applied are unbalanced.

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Answer:b…………………………….

Explanation:

A. When an object's acceleration vector points in the same direction as its velocity, the object speeds up without turning.

The average acceleration vector is defined as the rate at which the velocity changes with time.

When an object is slowing down, the acceleration of the object is in the opposite direction as the velocity.

Also, when an object is speeding up, the acceleration of the object is in the same direction as the velocity.

Thus, when an object's acceleration vector points in the same direction as its velocity, the object speeds up without turning.

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The erosion of limestone bedrock can result in the formation of all the following landforms except ridges.

Limestone is a type of sedimentary rock that is primarily composed of the mineral calcite (calcium carbonate, CaCO₃). It accounts for around ten percent of the total volume of all sedimentary rocks. This rock is distinguished by the fact that its principal constituent, calcite, is primarily formed by shell-producing and coral-building living organisms. The action of acidic water on limestone deposits has created numerous caverns, gorges, sinkholes, and other natural landforms.

Whereas, a ridge, often known as a mountain ridge, is a geographical feature composed of a series of mountains or hills that form a continuously raised crest over a long distance.

Therefore, the erosion of limestone bedrock can result in the formation of caverns, sinkholes, and underground waterways except for ridges.

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Answer:

About 15 seconds,.344 kilo

Explanation:

Answer:

15.36 [sec]; 2.64143 [km].

Explanation:

all the details are in the attachment, note, the suggested solution consists of two parts: formula and solution.

Answer:

There is more to motion than distance and displacement. Questions such as, “How long does a foot race take?” and “What was the runner’s speed?” cannot be answered without an understanding of other concepts. In this section we will look at time, speed, and velocity to expand our understanding of motion.

A description of how fast or slow an object moves is its speed. Speed is the rate at which an object changes its location. Like distance, speed is a scalar because it has a magnitude but not a direction. Because speed is a rate, it depends on the time interval of motion. You can calculate the elapsed time or the change in time, Δt, of motion as the difference between the ending time and the beginning time

The SI unit of time is the second (s), and the SI unit of speed is meters per second (m/s), but sometimes kilometers per hour (km/h), miles per hour (mph) or other units of speed are used.

When you describe an object's speed, you often describe the average over a time period. Average speed, vavg, is the distance traveled divided by the time during which the motion occurs.

vavg=

distance

time

You can, of course, rearrange the equation to solve for either distance or time

time =

distance

vavg

.

distance = vavg × time

Suppose, for example, a car travels 150 kilometers in 3.2 hours. Its average speed for the trip is

vavg =

distance

time

=

150 km

3.2 h

47 km/h.

A car's speed would likely increase and decrease many times over a 3.2 hour trip. Its speed at a specific instant in time, however, is its instantaneous speed. A car's speedometer describes its instantaneous speed.

Explanation:

The slope of a linear position graph tells the velocity of the object, for an object which is moving at a constant speed the position graph with linear shape, and the velocity graph with horizontal shape, and for an object which is moving at a constant acceleration the position graph will be the in parabolic shape and velocity graph is of linear shape.

The rate of change in an object's velocity with respect to time is known as acceleration in mechanics. The vector quantity of accelerations. The direction of the net force that is acting on an object determines its acceleration.

Since acceleration has both a magnitude and a direction, it is a vector quantity. Velocity is a vector quantity as well. The definition of acceleration is the change in velocity vector over a time interval divided by the time interval.

There are several types of acceleration :

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Answer:

The formula for potential energy depends on the force acting on the two objects.

Answer:

Conduction: Touching a stove and being burned. Ice cooling down your hand. .

Explanation:

Answer:

O The acceleration is zero.

Explanation: because it not decreasing nor increasing just staying the same speed