A man holds a 160-N ball in his hand, with the forearm horizontal (see the drawing). He can support the ball in this position because of the flexor muscle force M with arrow, which is applied perpendicular to the forearm. The forearm weighs 21.0 N and has a center of gravity as indicated.

Answer:

attracting iron and producing a magnetic field

Answer:

The two most common types of orbit are "geostationary" and "polar."

Answer:2 ways in which a weather satellite can orbit the earth

Explanation:

Answer:

200

Explanation:

subtract it it's 275

Answer:

The explanation is given below:

Explanation:

It shows that we do not fully understand the formation of our Solar System.

It has been modified to allow for planets to migrate inwards or outwards due to gravitational interactions.

Answer:

\(0\:\mathrm{ m/s^2}\)

Explanation:

Recall the formula for acceleration:

\(\displaystyle\\a=\frac{v_f-v_i}{\Delta t}\), where \(v_f\) is final velocity, \(v_i\) is initial velocity, and \(\Delta t\) is elapsed time (change in velocity over this amount of time).

Let's look at our time vs velocity graph. At t=0 seconds, V=25 m/s. So her initial velocity is 25 m/s.

We want to find the acceleration during the first 5 seconds of motion. Well, looking at our graph, at t=5 seconds, isn't our velocity still 25 m/s? Therefore, final velocity is 25 m/s (for this period of 5 seconds).

We are only looking from t=0 seconds to t=5 seconds which is a total period of 5 seconds. Therefore, elapsed time is 5 seconds.

Substituting values in our formula, we have:

\(\displaystyle a=\frac{25-25}{5}=\frac{0}{5}=\boxed{0\:\mathrm{m/s^2}}\)

Alternative:

Without even worrying about plugging in numbers, let's think about what acceleration actually is! Acceleration is the change in velocity over a certain period of time. If we are not changing our velocity at all, we aren't accelerating! In the graph, we can see that we have a straight line from t=0 seconds to t=5 seconds, the interval we are worried about. This indicates that our velocity is staying the same! At t=0 seconds, we have a velocity of 25 m/s and that velocity stays the same until t=5 seconds. Even though we are moving, we haven't changed velocity, which means our average acceleration is zero!

Answer:

Compression, Condensation, Expansion, Evaporation

The correct answer is B. Weight directly measures force while mass directly measures the amount of matter.

Explanation:

Weight and mass are two related but not identical concepts. The first term "mass" can be found by measuring the amount of matter in a body or substance. For example, the mass in an apple is around 80 grams depending on its size. In this context, mass is measured using units such as grams or kilograms. On the other hand, weight considers not only the matter in an object but the force exerted in it, especially, the gravitational force. In the case of the apple, the weight is 1 N as newtons (N) are used to measure force and this is the result of multiplying the mass by gravity. According to this, option B is correct.

displacement = 55 cm.Initial position = 25 cm,Final position = 80 cm,Displacement = final position-finitial position,Putting values in above formula,D = 80 cm - 25 cm,D = 55 cm,It means that the displacement of the ant is 55 cm.

Distance is the length of any path connecting any two places.As measured along the shortest path between any two points, displacement is indeed the direct distance between them.The direction is ignored when calculating distance.

Displacement is just the distance between an object's starting point and its final location, whereas distance is indeed the length of an object's path.

To know more about displacement visit:

https://brainly.com/question/30087445

#SPJ1

Answer:

Explanation:

Stop. Take a 5-10 minute breather, stretch out like you're doing your pre-workout (warmups). Drink some water, lay down for 3 minutes.

Answer: I hope this helps you

Explanation:

If you experience pain during weight training, it’s important to stop the exercise immediately and assess the source of the pain. If the pain is localized and mild, you can try taking a short break and then continuing with a lighter weight or modified exercise. However, if the pain is severe or spreading, you should stop the workout altogether and seek medical attention as soon as possible. Remember to always listen to your body and use proper form and technique to prevent injury.

Answer:

In a material, the magnetic behavior depends on the alignment of magnetic moments of the atoms. Magnetic moments are generated by the motion of the electrons in the atoms. When the magnetic moments of atoms in a material are aligned in a specific pattern, it creates a magnetic field which results in the material being magnetic.

In many materials, the magnetic behavior arises due to the alignment of magnetic domains, which are regions of atoms with magnetic moments aligned in the same direction. When many domains with aligned magnetic moments are present in a material, the material becomes magnetic.

The magnetic behavior of a material depends on the number of electrons and the arrangement of those electrons in the atoms. In particular, for an atom to have a magnetic moment, it must have unpaired electrons, meaning electrons that are not paired with another electron with the opposite spin. When these unpaired electrons in the atoms are aligned, they generate a magnetic moment. If all electrons are paired, there will not be a net magnetic moment, so the material will not be magnetic.

So, in summary, the magnetic behavior of a material is determined by the alignment of magnetic moments of atoms. When the magnetic moments of many atoms in a material align in the same direction, it creates a magnetic field, leading to a material being magnetic. This alignment is usually present in magnetic domains consisting of atoms with unpaired electrons.

If the force provided by the engine of a toy car decreases, the car will slow down and eventually come to a stop.

1. The force provided by the engine of a toy car is responsible for propelling it forward at a constant speed. This force overcomes any friction or resistance acting on the car.

2. When the force provided by the engine decreases, there is a reduction in the overall force acting on the car. As a result, the force can no longer counteract the resistance and friction effectively.

3. The resistance and friction acting on the toy car, such as air resistance and the friction between the wheels and the surface, start to have a greater impact on the car's motion.

4. With a reduced force from the engine, the car begins to slow down gradually. The deceleration occurs because the opposing forces now have a greater influence on the car's motion.

5. As the force continues to decrease, the opposing forces eventually surpass the remaining force from the engine. Consequently, the toy car slows down even more and eventually comes to a complete stop.

6. If the force provided by the engine becomes extremely low or nonexistent, the opposing forces will completely overpower the forward force, causing the toy car to stop moving altogether.

In summary, when the force provided by the engine of a toy car decreases, the car's speed decreases, and it eventually comes to a stop due to the increased influence of opposing forces.

For more such questions on force, click on:

https://brainly.com/question/28163757

#SPJ8

A parallel circuit is an electrical circuit with more than one current path and all circuit components are connected between the same two sets of electrically common points. The current supplied by the source in a parallel circuit is equal to the sum of all branch currents in the circuit.

For such more question on parallel circuit

https://brainly.com/question/19929102

#SPJ8

If the magnification is -4 the the image is larger and is it inverted in nature.

The magnification of the body is given is -4, here the signs show the nature of the image and the numerical value is the times to which the object has been magnified. Here, it is inverted because there is negative sign and it is enlarged as the magnification is more than 1.

Therefore, a magnification of -4 indicates that the image is both inverted and larger than the object. The resultant picture will be a larger, inverted version of the object if it is seen via a lens or mirror with a magnification of -4.

To know more about magnification, visit,

https://brainly.com/question/131206

#SPJ1

These scientists are known  to study different aspects of science. The study they engage are;

a. Geologists - study the physical structure and composition of the Earth, including rocks, minerals, and natural resources.

b. Zoologists - study animals, their behavior, physiology, evolution, and distribution.

c. Anthropologists - study human societies, cultures, and behavior across time and space.

d. Botanists - study plants, their physiology, structure, ecology, and evolution.

e. Chemists - study the composition, properties, and behavior of matter and the chemical changes it undergoes.

f. Physicists - study the fundamental principles that govern the behavior of matter and energy in the universe, including mechanics, thermodynamics, electromagnetism, quantum mechanics, and relativity.

Read more on scientists here:https://brainly.com/question/458058

#SPJ1

Answer:

Since the two forces are represented by Fap and For, we can assume that Fap refers to the force applied by your hand on the dog while petting it, and For refers to the equal and opposite force applied by the dog's body on your hand.

The diagram showing your hand petting a dog would look something like this:

```

____

/ \

/ \

/ D \

/ \

/____________\

H

```

In this diagram, the force Fap is represented by an arrow pointing from your hand towards the dog's body, and the force For is represented by an arrow pointing in the opposite direction, from the dog's body towards your hand.

We can describe the two forces as follows:

- Fap: The force applied by your hand on the dog's body while petting it.

- For: The equal and opposite force applied by the dog's body on your hand, according to Newton's third law of motion.

t = d : v

t = 37.6 km : 64 km/h

t = 0.5875 h = 35.25 min  

A bicycle slows down uniformly from vi=8.40 [m/s] to rest over a distance of 115 [m]. Each wheel and tire has an overall diameter of 0.68 [m]. The magnitude of the angular acceleration of the wheel is approximately 0.0757 rad/s².

To determine the magnitude of the angular acceleration of the wheel, we need to first calculate the change in angular velocity and the time taken to come to rest. Then we can use these values to find the angular acceleration.

Calculate the initial angular velocity:

The initial linear velocity of the bicycle wheel is given by the formula v = ω * r, where v is the linear velocity, ω is the angular velocity, and r is the radius of the wheel.

The radius of the wheel is half the diameter, so r = 0.68 m / 2 = 0.34 m.

Given the initial linear velocity vi = 8.40 m/s, we can calculate the initial angular velocity ωi:

vi = ωi * r

ωi = vi / r

Calculate the final angular velocity:

The final angular velocity of the wheel is 0 rad/s since it comes to rest.

ωf = 0 rad/s

Calculate the change in angular velocity:

The change in angular velocity (Δω) is given by the formula Δω = ωf - ωi.

Δω = 0 - ωi

Calculate the time taken to come to rest:

To calculate the time taken to come to rest, we can use the formula v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time.

Given the initial velocity vi = 8.40 m/s, final velocity vf = 0 m/s, and distance d = 115 m, we can calculate the acceleration a:

vf = vi + at

0 = 8.40 + a * t

We also know that the distance traveled d is related to the initial and final velocities and the time by the formula d = (vi + vf) / 2 * t:

d = (vi + vf) / 2 * t

115 = (8.40 + 0) / 2 * t

From the two equations above, we can solve for the acceleration a and the time t.

Calculate the angular acceleration:

The angular acceleration (α) is given by the formula α = Δω / t.

α = Δω / t

Substitute the values for Δω and t and calculate the angular acceleration.

Therefore, the magnitude of the angular acceleration of the wheel is approximately 0.0757 rad/s².

For more such questions on angular acceleration , click on:

https://brainly.com/question/13014974

#SPJ8

The angle measured counterclockwise from the positive x-axis is θ = 50.4°

Here we know that the vector is:

V = < -177 cm, -214 cm>

To get the correspondent angle for this vector, we can think that this is the hypotenuse of a right triangle, such that the y-component and x-component are the cathetus.

Then, to get the angle (measured counterclockwise from the positive x-axis) is given by:

Tan(θ) = (opposite cathetus)/(adjacent cathetus)

Tan(θ) = (-214cm)/(-177 cm)

Using the inverse tangent function we get:

Atan(Tan(θ)) = Atan((-214cm)/(-177 cm))

θ = 50.4°

So the angle is 50.4°

If you want to learn more about vectors, you can read:

https://brainly.com/question/3184914

Taking into account the Newton's second law, the acceleration of the object is 5 m/s².

Newton's second law states that this force will change the speed of an object because the speed and/or direction will change and these are called acceleration.

Newton's second law states that: "The acceleration of an object is directly proportional to the force acting on it and inversely proportional to the mass."

Mathematically, Newton's second law is expressed as:

F= m×a

where:

In this case, you know:

Replacing in the definition of Newton's second law:

200 N= 40 kg× a

Solving:

a= 200 N÷40 kg

a= 5 m/s²

Finally, the acceleration is 5 m/s².

Learn more about the Newton's second law:

brainly.com/question/23845187

#SPJ1

The average acceleration of the motorcycle over the given distance is approximately 9.39 m/s².

To calculate the average acceleration of the motorcycle, we can use the formula:

Average acceleration = (final velocity - initial velocity) / time

First, let's convert the final velocity from km/h to m/s since the distance is given in meters. We know that 1 km/h is equal to 0.2778 m/s.

Converting the final velocity:

Final velocity = 78 km/h * 0.2778 m/s = 21.67 m/s

Since the motorcycle starts from rest (initial velocity is zero), the formula becomes:

Average acceleration = (21.67 m/s - 0 m/s) / time

To find the time taken to reach this velocity, we need to use the formula for average speed:

Average speed = total distance/time

Rearranging the formula:

time = total distance / average speed

Plugging in the values:

time = 50 m / 21.67 m/s ≈ 2.31 seconds

Now we can calculate the average acceleration:

Average acceleration = (21.67 m/s - 0 m/s) / 2.31 s ≈ 9.39 m/s²

To learn more about acceleration

https://brainly.com/question/2303856

#SPJ8

The final speed of the skier at the top mountain is determined as 9.27 m/s.

The change in the energy of the skier due to frictional force is calculated as follows;

ΔP.E = Pi + Ef

where;

The distance of the plane travelled is calculated as;

sin35 = 2.5/L

L = 2.5 / sin35

L = 4.36 m

ΔP.E = mghi - μmgcosθ(L)

where;

ΔP.E = (60 x 9.8 x 2.5) - (0.38)(60)(9.8) cos(35) x (4.36)

ΔP.E = 671.98 1 J

The final speed of the skier at the top of the plane;

P.E = K.E

P.E = ¹/₂mv²

v² = 2P.E /m

v = √(2P.E /m)

v = √(2 x 671.98) / 60)

v = 4.73 m/s

Total speed = -4.73 m/s + 14 m/s = 9.27 m/s

Thus, due to frictional force opposing the upward motion of the skier, the final speed at the top will be smaller than the initial speed.

Learn more about final speed here: https://brainly.com/question/25905661

#SPJ1

1)a) Pressure is the force exerted per unit area, measured in units such as pascals (Pa) or pounds per square inch (psi).

b) The value of standard atmospheric pressure is approximately 101.3 kilopascals (kPa) or 1 atmosphere (atm).

c) One application of liquid pressure in our daily life is in hydraulic systems, like car brakes, where liquid pressure is used to transmit force and amplify it.

d) The instruments used to measure the pressure of compressed air include pressure gauges or manometers.

e) An instrument called a barometer is used to measure atmospheric pressure.

f) The unit of compressed air is typically measured in pounds per square inch (psi) or pascals (Pa).

g) Standard atmospheric pressure is the pressure exerted by the Earth's atmosphere at sea level. It is approximately equal to 1 atm or 101.3 kPa.

h) The property of liquid that is applicable in water supply systems in cities is its ability to flow and exert pressure, allowing water to be distributed through pipes and reach different levels in buildings.

i) The property of liquid that supports its use in hydraulic machines is its incompressibility, allowing it to transmit force and energy effectively.

2) a)Atmospheric pressure is the force exerted by the weight of the Earth's atmosphere on a surface.

b) The equation P = dgh. This equation can be derived by considering the weight of the fluid column and the force it exerts on a unit area at the base.

c) A mercury barometer consists of a glass tube filled with mercury, inverted into a dish of mercury. The mercury in the tube adjusts its height based on the atmospheric pressure.

d) The importance of atmospheric pressure can be seen in its role in weather patterns, maintaining the balance of gases in the atmosphere, and facilitating breathing for humans and animals.

e) Applications of liquid pressure include hydraulic systems in machinery, such as lifts and cranes, hydraulic brakes in vehicles, and water towers for maintaining water pressure in buildings.

f) Events in daily life directly related to pressure include inflating a balloon, using a bicycle pump to inflate tires, and squeezing toothpaste out of a tube.

1)a) Pressure is defined as the force per unit area. Its unit in the S.I system is newtons per square meter (N/m²) or Pascal (Pa).

b) The value of standard atmospheric pressure at sea level is 101.3 kPa (kilopascals) or 1 atm (atmosphere). c) Liquid pressure has numerous applications in our daily life, but one of the most common ones is the hydraulic braking system used in cars.

d) An instrument used to measure the pressure of compressed air is called a pressure gauge. e) An instrument used to measure atmospheric pressure is called a barometer.

f) The unit of compressed air is generally psi (pounds per square inch).

g) Standard atmospheric pressure is the pressure exerted by the atmosphere at sea level and is equal to 101.3 kPa or 1 atm.

h) The property of liquids that is applicable in water supply systems in cities is their incompressibility. i) The property of liquids that supports their use in hydraulic machines is their incompressibility.

2)a) Atmospheric pressure is defined as the force per unit area exerted by the weight of the atmosphere on the surface. It is proven with the help of the following activity: Take a glass full of water and place a cardboard over it. Hold the cardboard tight and invert the glass. The water will not spill out of the glass, which is because the atmospheric pressure is greater on the cardboard than the pressure inside the glass.

b) The pressure exerted by a fluid can be derived using P = dgh, where P is the pressure, d is the density, g is the acceleration due to gravity, and h is the height of the fluid column.

c) A mercury barometer is made up of a glass tube that is closed at one end and filled with mercury. The tube is inverted and placed in a container of mercury. The pressure of the atmosphere on the open surface of the container forces the mercury in the tube to rise to a height that is proportional to the atmospheric pressure.

d) The importance of atmospheric pressure can be explained by the following points: it enables breathing, regulates the weather, and causes the ocean tides.

e) Some applications of liquid pressure include hydraulic brakes in cars, hydraulic lifts, and hydraulic jacks.

f) Some events that are directly related to pressure include gas escaping from a pressurized container, balloons being inflated, and soda cans being opened.

Know more about  Pressure   here:

https://brainly.com/question/28012687

#SPJ8

inside a moving elevator, in free fall

Do you weigh the same inside an elevator?

We shall weight ourselves when the elevator is travelling at our normal weight. Because we are currently moving up or down the elevator at the same speed, nothing is changing our weight. However, once the elevator begins to move or stops, our bodies resist it.

What is the apparent weight when the elevator is running?

If the elevator accelerates downward, an is negative and the apparent weight is less than the real weight. There is no weight discernible if the elevator descends naturally. The apparent weight is zero because when a human and a scale are falling freely, they cannot clash.

More information on Speed

Visit

https://brainly.com/question/28224010

#SPJ4

To find the mass in kilograms, you need to know the object's weight in newtons and the acceleration due to gravity. The formula for finding mass is mass = weight / acceleration due to gravity. So if you have an object with a weight of 100 N and the acceleration due to gravity is 9.8 m/s^2, the mass would be 10.204 kg.

The mass of the block is 0.025 kg or 25 g, when the spring has k = 28 N/m, and compresses 0.11 m before bringing the block to rest.

For more questions on mass

https://brainly.com/question/86444

#SPJ8

Answer:

False

Explanation:

The amount of energy transferred between objects not only depend on their masses, initial and final temperatures but also on their specific heat capacity.

The specific heat capacity plays an important role in ascertaining the amount of thermal energy a body can conduct.

The equation;

              H = m c Ф

where H is the amount of heat

           m is the mass

            c is the specific heat capacity

            Ф is the change in temperature;

  is used to find the amount of heat of a substance.

Answer:

false

Explanation:

Because the  amount of energy is transferred between objects not only depend on their masses, initial and final temperatures but also on their specific heat capacity.

Hopes this helps you and it’s correct because I had this question on edgenuity

Answer: B im sorry if its wrong

Explanation:

The net displacement of the object from t = 0s to t = 8s is 2 m.

The initial velocity of the object is 1 m/s.

The  final velocity of the object is 0 m/s.

The average velocity of the object from t = 0s to t = 8s is 0.25 m/s.

The distance traveled by the object in the first 8 seconds is 6 m.

The displacement of the object is the change in the position of the object.

d = Δx

d = x(0) = x(8)

d = 2 m - 0 m = 2m

v = x/t

v = 2m / 2 s

v = 1 m/s

v = x/t

v = 0/8 s = 0 m/s

v(avg) = Δx/Δt = 2 m/8 s = 0.25 m/s

in the first 2 seconds = 2 m

in the first 6 seconds = 4 m

in the first 8 seconds = 2 m + 4 m + 0 = 6 m

Thus, the net displacement of the object from t = 0s to t = 8s is 2 m.

The initial velocity of the object is 1 m/s.

The  final velocity of the object is 0 m/s.

The average velocity of the object from t = 0s to t = 8s is 0.25 m/s.

The distance traveled by the object in the first 8 seconds is 6 m.

Learn more about final velocity here: https://brainly.com/question/25905661

#SPJ1

Answer:

Density

Explanation:

As the density equal mass ÷ volume

Answer:

Density

Explanation:

Density is the mass of a given volume of substance;

The formula is:

Density = mass/volume

If you have mass and volume, you can therefore calculate density

Explanation:

c because there is element

Answer:

C. H2 and N2 would react to produce more NH3

Explanation:

A.P.E.X