Adding a ___ to an electric circuit would increase the magnetic field around a wire

The forces that act upon a baseball player diving head-first into second base and sliding on the infield dirt are the Normal Force, Gravity Force, and Friction Force.

When a baseball player dives head-first into second base and slows down while sliding on the infield dirt, several forces act upon the player. These forces include:

Therefore, the correct answers would be a. Normal Force, b. Gravity Force, d. Friction Force.

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Answer:

The time taken to travel is, t = 12 minutes

Explanation:

Given data,

The speed of the car, v = 60 km/h

The distance of travel, d = 12 km

The time taken for the travel is t = ?

The speed is defined as the distance divided by the time taken to travel. The formula for speed is,

                                  v = d/t

∴                                  t = d/v

                                    t = 12 km / 60 km/h

                                    t = 0.2 h

                                     t = 12 minutes

Hence, the time taken to travel is, t = 12 minutes.

Given that the average speed of the car is 60 km/hr and it needs to travel a distance of 12 km, it will take the car around 0.2 hours, which is equivalent to 12 minutes, to travel this distance.

This problem is related to the concept of speed, which in physics, is the distance covered per unit time. Here, we are asked to find the time so, we will use the formula for calculating time which is Time = Distance / Speed.

Given:

So, time needed can be calculated as:

Time = Distance / Speed

Time = 12 km / 60 km/hr

This gives Time = 0.2 hr.

But as we generally count time in minutes, we can convert hours into minutes. Since 1 hour = 60 minutes, therefore, 0.2 hr = 0.2 x 60 = 12 minutes.

So, it takes 12 minutes to travel 12 kilometers with an average speed of 60 kilometers per hour.

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Answer:

Mass has total mechanical energy, which is the sum of kinetic and potential energy. as the mass is dropping, potential energy is converted into kinetic energy so mechanical energy is preserved If there is no friction. If there is friction, some of the mechanical energy is lost as heat energy so it changes.

Explanation:

Answer:

Elements in a period share the highest unexcited electron energy level. There are more elements in some periods than others because the number of elements is determined by the number of electrons allowed in each energy sub-level.

Explanation:

Explanation:

The number of images formed by a pair mirrors kept at an angle [tex]\alpha[/tex] is

[tex]n=\frac{360}{\alpha } -1[/tex]  if [tex]\frac{360}{\alpha }[/tex] comes even.

[tex]n=\frac{360}{\alpha }[/tex]      if [tex]\frac{360}{\alpha }[/tex] comes odd.

where [tex]n[/tex] is the number of images formed.

In our question,

[tex]\alpha =120^{0}[/tex]

[tex]\frac{360}{\alpha } =\frac{360}{120}=3[/tex]

It is odd,so [tex]n=\frac{360}{120}=3[/tex]

If Galileo's experiment did not measure the speed of light, it measures man's reaction time.

Option B

Explanation:

Answer:

Galileo's experiment measured mans reaction time.

Explanation:

The current in the circuit is 5 A

Explanation:

The intensity of current is given by the equation:

[tex]I=\frac{q}{t}[/tex]

where

I is the current

q is the amount of charge passing through a given point of the circuit in a time interval of t

For the cell in this problem, we have

q = 150 C is the charge

t = 30 s is the time interval

Substituting into the equation, we f ind

[tex]I=\frac{150}{30}=5 A[/tex]

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Answer:

Part 1.:  Work done by the force is 3461 J

Part 2: Work done by the force of friction is 972.8 J

Explanation:

part 1.

Since the displacement is horizontal, the only component of the 88.2 N force applied on the block is the horizontal component (which carries the cos(26.9) (the cosine of the angle with the horizontal). Then the component of the force acting on the 44 m displacement is: 88.2 * cos(26.9) . Then the work done by this component can be found by multiplying this quantity times the displacement (44 m), which gives:

88.2 * cos (26.9) * 44 = 3460.8878 J

which we can round to the nearest whole number as: 3461 J

Part 2.

The force of kinetic friction is the product of the normal force exerted by the surface on the block, times the coefficient of kinetic friction. Now the surface reacts with the normal force opposing the net vertical force applied by the block on the surface. Notice that in this case, the normal force doesn't just oppose the weight (m * g) of the object, since there is a vertical component of the external 88.2 N force ( the one that uses the sin(26.9) ) that is acting opposite to the gravitational force. This pointing upwards force component is going to subtract from the weight, thus making the normal force smaller than what it would be if just the object's weight was acting vertically. In magnitude, this is the normal force calculation:

Normal = Weight - 88.2 * sin(26.9)

Normal = [17.5 * 9.8 - 88.2 * sin(26.9) ] N

Normal = 131.6 N

At this point, we can calculate the value of the force of kinetic friction (product between the normal force and the coefficient of kinetic friction):

Kinetic friction force: 0.168 * 131.6 N = 22.1088 N

Now the product of this force times the displacement will give us the magnitude of the work done by the force of friction:

22.1088 N * 44 m = 972.7872 J

that we can round to 972.8 J

It is important to notice that the work done by the force of friction is negative due to the fact that the force acts opposite to the displacement of the block.

Answer:

"What is the best advice a parent can give a child?"

Explanation:

The other answers have one clear response. Ex: Orange popsicles melt faster than grape popsicles. That would be a fact.

But parental advice can vary, depending on your opinion. I may say that all parents must teach their children not to talk to strangers, while someone else may say that parents should advice their kids to treat everyone fairly. Nothing can be proven as the only appropriate response.

Hope this helps!

Answer:

The speed of a turtle is 4m/s

Explanation:

speed = distance/time

distance = 100m

time = 25s

s = 100/25

= 4m/s

Answer: 20m/s

Explanation:

Data;

Distance (s) = 100m

Time (t) = 25s

Velocity (v) = s/t

v = 100/25

v = 20m/s

Answer:

v = 4t - t²/3

Explanation:

4 - k*6 = 0

k = 4/6 = 2/3

dv/dt = 4- 2/3 t

integral of dv = integral of (4-2/3 t) dt

v = 4t - t²/3

Answer:

26

Explanation:

Answer:

The second option: 11 kg * m/s

Explanation:

Recall that linear momentum is defined as the product of the mass times its velocity, therefore in this case, the mass is 0.45 kg , and the speed is 25 m/s, therefore the linear momentum is:

P = m * v = 0.45 Kg * 25 m/s = 11.25 kg * m/s

So roundng the answer to the nearest whole number, you get 11 kg * m/s, which is the second option they give you.

Answer:

11 kg • meters per second

Explanation:

Answer:

Sulfate

The sulfate or sulphate (see spelling differences) ion is a polyatomic anion with the empirical formula SO2−4. Sulfate is the spelling recommended by IUPAC, but sulphate is used in British English. Salts, acid derivatives, and peroxides of sulfate are widely used in industry. Sulfates occur widely in everyday life. Sulfates are salts of sulfuric acid and many are prepared from that acid.

Sulfide

Sulfide (systematically named sulfanediide, and sulfide(2−)) (British English sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions. It contributes no color to sulfide salts. As it is classified as a strong base, even dilute solutions of salts such as sodium sulfide (Na2S) are corrosive and can attack the skin. Sulfide is the simplest sulfur anion.

Answer:

A race track has 47520 inches.

Explanation:

Given that,

Length if the race track is 0.750 miles.

We know that, one mile is 5280 feet.

One feet is 12 inches.

To convert length of the track from miles to inches follow these steps:

Step 1:

Convert into feet:

Multiply 0.750 miles to 5280 feet.

Then the race track’s length is 3960 feet.

Step 2:

Convert into inch:

Multiply 3960 feet to 12 inches.

Then the race track’s length is 47520 inches.

Therefore, length of the race track in inches is 47520 inches.

Answer:

for physics the answer is 47500

The potential energy of the skater is 2352 J

Explanation:

The gravitational potential energy of a body is the energy possessed by the body due to its position in a gravitational field. Near the Earth's surface, it can be calculated as

[tex]PE=mgh[/tex]

where

m is the mass of the body

[tex]g=9.8 m/s^2[/tex] is the acceleration of gravity near the Earth's surface

h is the height of the body relative to the ground

For the skater in this problem,

m = 60 kg

h = 4 m

Substituting, we find her potential energy:

[tex]PE=(60)(9.8)(4)=2352 J[/tex]

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The velocity of the ping-pong ball must be 8109 m/s

Explanation:

The momentum of an object is given by

[tex]p=mv[/tex]

where

m is the mass of the object

v is its velocity

For the bowling ball, we have

m = 9 kg

v = 3.28 m/s

so its momentum is

[tex]p=(9)(3.28)=29.5 kg m/s[/tex]

We want the ping-pong ball to have the same momentum, so:

p' = 29.5 kg m/s

And the mass of the ping-pong ball is

m = 3.638 g = [tex]3.638\cdot 10^{-3} kg[/tex]

Therefore, its velocity must be:

[tex]v=\frac{p}{m}=\frac{29.5}{3.638\cdot 10^{-3}}=8109 m/s[/tex]

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The velocity of the Ping-Pong ball can be found by setting the momentum of the bowling ball equal to the momentum of the Ping-Pong ball and solving for its velocity. Using the given masses and velocities, we can calculate the velocity of the Ping-Pong ball in m/s.

In order for two balls to have the same momentum, the momentum of the bowling ball must be equal to the momentum of the Ping-Pong ball. The momentum of an object is calculated by multiplying its mass by its velocity. Therefore, to find the velocity of the Ping-Pong ball, we can use the equation: momentum of bowling ball = momentum of Ping-Pong ball.

Given: mass of bowling ball = 9 kg, velocity of bowling ball = 3.28 m/s, mass of Ping-Pong ball = 3.638 g = 0.003638 kg (convert g to kg)

Momentum of bowling ball = mass of bowling ball × velocity of bowling ball

Momentum of Ping-Pong ball = mass of Ping-Pong ball × velocity of Ping-Pong ball

Setting the two momentum equations equal to each other, we can solve for the velocity of the Ping-Pong ball:

(9 kg) × (3.28 m/s) = (0.003638 kg) × (velocity of Ping-Pong ball)

Dividing both sides of the equation by 0.003638 kg will give us the velocity of the Ping-Pong ball:

velocity of Ping-Pong ball = (9 kg × 3.28 m/s) / 0.003638 kg

Calculating this expression will give us the velocity of the Ping-Pong ball in m/s.

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An idea that is supported by some evidence, but is not yet the basis for a field of study is called a working theories.

Explanation:

The combined form of one’s skills, the work experiences from testing to reveal some truth about the issues or being involved one’s work in an experiment usually called as working theory.

These type of theories are more elaborate, interconnected, make some experiences with the solution to sort out the issues and seems to be useful in event monitoring. These can be supported with certain evidences but still not acting as the basement for the field study.

Final answer:

A hypothesis based on evidence that requires further investigation and testing before becoming a field of study.

Explanation:

A hypothesis is a suggested explanation based on evidence that can be tested through observation or experimentation. This idea is supported by some evidence but is not yet the basis for a field of study. Multiple strands of evidence are needed to potentially develop a verified theory.

Answer:

Total moment of inertia when arms are extended: 1.613 [tex]kg\,m^2[/tex]

Explanation:

This second part of the problem could be a pretty complex one, but if they expect you to do a simple calculation, which is what I imagine, the idea is just adding another moment of inertia to the first one due to the arms extended laterally and use the moment of inertia for such as depicted in the image I am attaching.

In that image:

L is the length from one end to the other of the extended arms (each 0.75m from the center of the body) which gives 1.5 meters.

m is the mass of both arms. That is: twice 5% of the mass of the person: which mathematically can be written as: 2 * 0.05 * 56.5 = 5.65 kg

Therefore this moment of inertia to be added can be obtained using the formula shown in the image:

[tex]I_z=\frac{1}{12} \,m\,L^2\\\\I_z=\frac{5.65\,*\,1.5^2}{12} \\I_z=1.05937\,kg\,m^2[/tex]

Now, one needs to add this to the previous moment that you calculated, resulting in:

0.554 + 1.059 = 1.613 [tex]kg\,m^2[/tex]

The amount of energy transferred is 4320 J

Explanation:

Power is defined as the amount of energy transferred per unit of time:

[tex]P=\frac{E}{t}[/tex]

where

P is the power

E is the amount of energy transferred

t is the time

In this problem, we have:

P = 720 W is the power

t = 6 s is the time elapsed

Solving for E, we find the energy transferred needed to push the box:

[tex]E=Pt=(720)(6)=4320 J[/tex]

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To determine the volume displaced by the 54 g sample of brass, use the water displacement method and calculate the density by dividing the mass by the volume.

To determine the volume displaced by the 54 g sample of brass, you need to use the water displacement method. Submerge the brass sample in water and measure the volume of water displaced. The volume of water displaced will be equal to the volume of the brass sample. Then, to calculate the density of the brass sample, divide the mass of the sample (54 g) by the volume of the sample.

For example, if the volume of water displaced is 30 mL, then the volume of the brass sample is also 30 mL. The density of the brass sample would be calculated as 54 g/30 mL = 1.8 g/mL.

Answer:

336.9520 atm

Explanation:

The Gas Equation is as follows;-

Pressure×Volume=Number of Moles × Universal Gas Constant ×Temperature(in Kelvin)

Given Parameters

Number of moles-0.614 mol

Temperature 12°C or 12+273.15 ie 285.15°F

Volume-4.32 L

Universal Gas Constant-8.314 J/mol·K

Pressure -?(in atm)

Plugging in all the values in the Gas Equation:-

Pressure=[tex]\frac{0.614 × 8.314× 285.15}{4.32}   atm[/tex]

Pressure=336.9520 atm

Answer:

it is A aluminum

Explanation:

Answer:

Aluminium has best conductivity

So option (a) will be correct answer

Explanation:

We have given material resistance of of different material

Aluminium = 0.0000000282 ohm

Carbon = 0.000035

Germanium = 0.46 ohm

And silicon = 640 ohm

We know that resistance is the opposition in flow of current and conductivity of the material is inversely proportional to the resistance

So the material which has less Resistance will have high conductivity

As aluminium has less resistance so it will have high conductivity

So option (a) will be correct answer

Answer:

Explanation: 0.02

Recall: μ mg = ma

μ = ?

m = 10N

g = 10m\s2

a = 0.2m\s

Substituting the values , we have

μ x 10 x 10 = 10 x 0.2

100  μ = 2

μ = 2/100

μ = 1/50

μ = 0.02

μ = 0.02

Final answer:

The coefficient of friction between the mass and the table is calculated using Newton's second law and the formula for the coefficient of friction, which results in a value of 0.08.

Explanation:

Calculation of Coefficient of Friction

To calculate the coefficient of friction, we can use Newton's second law which states that force equals mass times acceleration (F = ma). Given that a force of 10 N is applied to a 10 kg mass and the resulting acceleration is 0.2 m/s², we can deduce that there must be a frictional force opposing the applied force. The equation simplifies to F = ma + frictional force (f). Plugging in the known values, we get 10 N = (10 kg)(0.2 m/s²) + f, which results in f = 10 N - (10 kg)(0.2 m/s²) = 10 N - 2 N = 8 N.

The weight of the mass can be calculated using weight = mass × gravity, which gives us a weight of (10 kg)(10 m/s²) = 100 N. The normal force on a horizontal surface is equal to the weight of the object, so it's also 100 N. The coefficient of friction (mu) is calculated using the formula mu = frictional force / normal force. Therefore, mu = 8 N / 100 N = 0.08.

The coefficient of friction between the mass and the table is 0.08.

Answer:

flexibility

Explanation:

Answer:

c. 75 joules

Explanation:

Work done(joules)=Force(newton)×Distance(meters)

Given: force=150-newton, Distance=0.5 meters

∴Work done=150×0.5=75 joules.

The amount of work done on the bucket will be 75 joules. Option C is correct.

Work done is defined as the product of applied force and the distance through which the body is displaced on which the force is applied.

Work may be zero, positive and negative.it depends on the direction of the body displaced. if the body is displaced in the same direction of the force it will be positive.

The given data in the problem is;

F is the force lift = 150-

d is the displacement = 0.5 meters

t is the time = 3 second

W is the amount of work done

The amount of work done on the bucket is found as;

[tex]\rm W = F \times d \\\\ W = 150 \times 0.5 \\\\ W=75 \ Joule[/tex]

Hence the amount of work done on the bucket will be 75 joules. Option C is correct.

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Answer:

"The Sierra Nevada mountain range of western North America, running along the eastern edge of the U.S. state of California."

Explanation:

Block Mountains:

Due, to stress created in side the crust of the earth the blocks or pieces of land or mass of land is created. In the past due to natural disaster and events that occurred in the ancient world, left us with some natural phenomenons called as block mountains. As the natural forces like seismic waves and other volcanic eruptions leads to such a disastrous amount of force that uplifts the mass of land on which it is acted upon.

Characteristics of the Block Mountains:

Types:

There are two main types of the block mountains,which are as below:

Answer:

The bomb will remain in air for 17.5 s before hitting the ground.

Explanation:

Given:

Initial vertical height is, [tex]y_0=1500\ m[/tex]

Initial horizontal velocity is, [tex]u_x=688\ m/s[/tex]

Initial vertical velocity is, [tex]u_y=0(\textrm{Horizontal velocity only initially)}[/tex]

Let the time taken by the bomb to reach the ground be 't'.

So, consider the equation of motion of the bomb in the vertical direction.

The displacement of the bomb vertically is [tex]S=y-y_0=0-1500=-1500\ m[/tex]

Acceleration in the vertical direction is due to gravity, [tex]g=-9.8\ m/s^2[/tex]

Therefore, the displacement of the bomb is given as:

[tex]S=u_yt+\frac{1}{2}gt^2\\-1500=0-\frac{1}{2}(9.8)(t^2)\\1500=4.9t^2\\t^2=\frac{1500}{4.9}\\t=\sqrt{\frac{1500}{4.9}}=17.5\ s[/tex]

So, the bomb will remain in air for 17.5 s before hitting the ground.

Answer:

x-axis

Explanation:

when it is at rest, horizontal, on a graph it is the x-axis.

Hope this helped!