How will an object at rest be affected if multiple forces working on it are opposed but unbalanced? (1 point)
The unbalanced forces will cause the object to produce a humming sound.
O Motion will be either created, stopped or changed.
The mass of the object will decrease.
The acceleration of the object will increase.

The sum of the vectors is shown in the image attached to this answer.

A vector quantity is a quantity that has both magnitude and direction. In effect, as we try to obtain the combination of the vector we also have to consider the direction. The vectors are often shown  by the use of a bold face or by the use of an arrow over the sign of the vector.

Now looking at this vectors, we know that the sum of the vectors can only be obtained geometrically but the arrows of the vectors must have to point in the appropriate directions for the correct  sum to be obtained.

Thus the sum of the vectors is shown in the image attached to this answer.

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The time taken by the ball to reach the maximum height when ball is thrown straight upward is t = 1.5s.

To find the time we must know the distance so to calculate the distance using formula,

v² = u² + 2 as

where,

v is final velocity

u is initial velocity

a is acceleration due to gravity

s is distance

As, we can see,

u = v = 30m/s

a = - 9.8 m/s²

s = ?

So, putting the values we get,

30²m/s = 30²m/s + 2 (9.8 m/s²) s

s = 30²m/s / 30²m/s + 2 (-9.8 m/s²)

s = 19.6

Now after getting to know the distance we can use the formula,

s = d/t

Where,

s is speed

d is distance

t is time

So, putting the values,

t = 30 / 19.6

t = 1.5s

Hence, the time taken by the ball to reach the maximum height is 1.5s.

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The mass of the cart is 30kg

Using Newton's formula which states that Force is given as product of mass and acceleration.

The force is given to be 60N

The acceleration is given to be 2 m/s^2

Using the formula

F=ma

Putting the values of formula,

60 = m x 2

m = 30 kg

Hence the mass of the cart is 30kg

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Answer: kfhfjffhfjfvfh.

Explanation: hfhvfffhfhf.

Answer: 0.15 Tm, 150000000 km

Explanation:

150,000,000,000m  to km=150000000 km (divide by 1000)

150,000,000,000m  to Tm=0.15 Tm

Answer:

The more mass the more kinetic energy it has

Explanation:

like a plastic ball and a metal one the metal one will fall faster.

hope this helps

The time taken for the object to travel the given height is determined as 12.48 seconds.

Time of motion of an object is the total time taken by the object to travel a given height or distance.

The time of motion of the boulder is calculated as follows;

h = vt + ¹/₂gt²

where;

1300 = 43t  +  0.5(9.8)t²

1300 = 43t + 4.9t²

4.9t² + 43t - 1300 = 0

solve the quadratic equation using formula method as shown below;

a = 4.9, b = 43, c = -1300

t = 12.48 seconds

Thus, the time taken for the object to travel the given height is determined as 12.48 seconds.

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If a car decreases in speed to a stop from an initial speed of 21 m/s in a period of 13 s, the average acceleration is 1.62m/s².

The acceleration of a moving body can be calculated by dividing the change in velocity (∆V) by the time taken. That is;

a = v - u/t

Where;

According to this question, a car decreases in speed to a stop from an initial speed of 21 m/s in a period of 13 s. The average acceleration is as follows:

acceleration = 21 - 0/13

acceleration = 1.62m/s²

Therefore, if a car decreases in speed to a stop from an initial speed of 21 m/s in a period of 13 s, the average acceleration is 1.62m/s².

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Answer:

I think it's B but I'm not 100% sure

2,302.74 J is the heat generated.

Current electricity is the electricity produced by the movement of electrons. Static electricity is the electricity that accumulates on a substance's surface. Power plants and batteries are used to produce the current electricity.

Electric current in a wire, where electrons serve as the charge carriers, is a measurement of the amount of charge that moves through any point of the wire in a given amount of time.

The mass of the aluminum is m = 0.25 kg.

The difference in temperature is T=10 C.

The following is a list of aluminum's specific heat capacities:

c=921.096 J/kg∘C

Therefore, we apply the following formula in this instance:

Q=mcΔT

We replace with:

Q=(0.25kg)(921.096J/kg∘C)(10∘C)

Thus, we will receive the heat produced:

Q=2,302.74 J

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For any freely falling item, the acceleration in the kinematic equations is -9.8 m/s/s, whether or not this is explicitly stated.

The supplied problem informs us that a ball was dropped and is supposed to be falling freely. Since the problem does not specify whether any other forces were present to influence the ball's motion, we must assume that the initial speed is v0=0 m/s.

Free-falling accelerates at a rate of 9.8 m/s2, which is referred to as the acceleration owing to gravity because it is being drawn towards the center of the earth. This indicates that a=9.8m/s2 is the value of the initial and final accelerations.

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A master's thesis and a dissertation are typically required for clinical psychology programs. Each of these typically takes one to two years.

Psychology doctoral degrees provide students with the training they need to pursue careers in academic research, professional practice, or both. The most common academic degrees awarded are the Doctor of Philosophy (PhD) or the Doctor of Psychology (PsyD). There are notable disparities between the types of training and professional goals of those with these degrees, even though each is intended to engage students in deep knowledge and abilities within an area of psychology. Understanding these variations is the first step in determining which curriculum is the greatest fit for a particular student.

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2197 m far behind the train is the automobile when it reaches the speed of 28.8 m/s, assuming that the train speed has remained at 28.8 m/s

s₁=v²/2a₁=28.8²/2•4=103.7 m.

Automobile:

s=s₁+s₃=103.7+262.5=366.2

t= t₁+t₂+t₃=7.2+63.8+18.2 = 89 s.

Train:

S=v •t=28.8•89=25 63.

Δs=S-s =2563.2-366.2=2197 m

The study of motion in a system of bodies is called kinematics, which does not directly take into account the forces or potential fields influencing the motion. In other terms, kinematics investigates the distribution of momentum and energy among interacting entities.

Understanding the causes of various motions of an item, such as rotational motion in which the object receives force or torque, is the main goal of kinetics. The definition of concepts like acceleration, velocity, and location of objects is provided by kinematics.

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The precise way a researcher measures and defines a variable is known as the operational definition.

The researcher measures the dependent variable and the independent variable is manipulated and controlled by the researcher ( Experimenter ). The concept of operational definition is applied in various fields such as Philosophy, Science, Business, computing etc.

To explain this clearly, let's consider an example in which the researcher tries to define sleep deprivation. In this sleep deprivation is the independent variable and factors causing sleep deprivation such as food, lifestyle, etc are dependent variables.

Therefore, the precise way a researcher measures and defines a variable is known as the operational definition.

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The speed of the racehorse increases by 27m/s.

Speed, expressed in terms of meters per second, is the rate at which an object's location changes. An item moves one meter in one second, for instance, if it starts at the origin and moves three meters in three seconds. A simple division of time by distance yields the equation for speed. To calculate speed, divide the distance traveled (say, 3 meters) by the passing time (say, three seconds) (one meter per second).

Speed is measured as distance moved over time.

Speed =  Distance/Time

We can also use these symbols:

Speed =  Δs/Δt

Speed is commonly measured in meters per second (m/s or m s-1), or kilometers per hour (km/h or km h-1)

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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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if a fighter hits a punching bag and brings it from rest up to a speed of 40 m/s in 0.08 s, Then the force of impact on the punching bag if its mass is 100 kg would be 50000 Newtons,

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

The impact of the force on the punching bag = momentum/time

                                                                           =100×40 / 0.08

                                                                           =5000 Newtons

Thus, the force of impact on the punching bag would be 50000 Newtons.

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Answer:

PN=P1+P2+P3.......................PN

The centripetal acceleration of the Ferris wheel with radius of 14.0 m is determined as 2.57 m/s².

Centripetal acceleration,  is the acceleration of a body moving a circular path.

The centripetal acceleration of the Ferris wheel is calculated as follows;

a = v²/r

where;

a = (6²) / (14)

a = 2.57 m/s²

Thus, the centripetal acceleration of the Ferris wheel is determined as 2.57 m/s².

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The complete question is below:

A Ferris wheel has a radius of 14 m, the linear speed of a passenger on the rim is 6 m/s .Find the centripetal acceleration of the Ferris wheel.

Answer:

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

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 spring constant is 542 N/m.

The height the ball reaches is 37.5 m.

The angular speed of the ball is calculated as follows;

ω = 2π/T

ω = (2π) / (0.13)

ω = 48.33 rad/s

The spring constant is calculated as follows;

ω = √(k/m)

ω² = k/m

ω²m = k

(48.33² x 0.232) = k

542 N/m

v = ωL

v = 48.33 x 0.56 m

v = 27.1 m/s

h = v²/2g

h = (27.1²) / (2 x 9.8)

h = 37.5 m

Thus, the spring constant is 542 N/m.

The height the ball reaches is 37.5 m.

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The correct answer is to describe an object's perceived size and describing its position in space. Degrees (°) are used to express angles. A complete circle has 360 °, whereas a straight angle has 90 °. For instance, there is a 90° angle between the horizontal direction (toward the horizon) and the vertical direction (directly above you). The full moon's angular diameter in the sky is around 1/ 2°.

Triangle Units

Divide a complete circle into 360 degrees. Divide a degree into 60 arcminutes, also known as minutes of arc (abbreviated as 60 arcmins or 60'). Divide an arcminute into 60 arcseconds, also known as seconds of arc (abbreviated as 60 arcsec or 60).

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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 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

The magnitude of the total displacement is 20.28 m.

The angle of the total displacement with the x axis is 70.5⁰.

The total displacement of the player is calculated as follows.

Apply cosine rule as shown below;

d² = d₁² + d₂² - 2d₁d₂ cos(θ)

d² = (24.1)² + (7.9²) - (2 x 24.1 x 7.9) cos(52.5)

d² = 411.42

d = √411.42

d = 20.28 m

Apply sine rule as shown below;

d/sinD = d₂/sinD₂

20.28/sin(52.5) = 7.9/sinD₂

25.562 = 7.9/sinD₂

sinD₂ = 7.9/25.562

sinD₂ = 0.309

D₂ = sin⁻¹(0.309)

D₂ = 18⁰

angle with x axis =  18⁰ + θ

                            =  18⁰ +  52.5⁰

                            = 70.5⁰

Thus, the magnitude of the total displacement is 20.28 m.

The angle of the total displacement with the x axis is 70.5⁰.

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Answer:

D

Explanation:

the amount of potential energy is dependents on the weight and the hight and gravitational energy being forced onto a object.