the pitcher's mound is 18.5 m to home plate. if the pitcher throws a ball there in 0.46 seconds how fast is that?

The coefficient of static friction between the book and the tabletop is 0.13.

The coefficient of static friction between the book and the tabletop can be calculated using the formula:

μs = Fs / N

Where μs is the coefficient of static friction, Fs is the force of static friction, and N is the normal force.

In this case, the force of static friction is the force required to start the book sliding, which is 2.16 N. The normal force is the weight of the book, which is 1.70 kg × 9.8 m/s2 = 16.66 N.

Plugging in the values into the formula, we get:

μs = 2.16 N / 16.66 N
μs = 0.13

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A car moving at 46 km/h skids 15 m with locked brakes. The distance travelled by the car when it skids is 94.74 m.

The acceleration of the car is calculated by applying the following kinematic equation.

v² = u² - 2as

where,

v is the final velocity of the car

u is the initial velocity of the car

a is the acceleration of the car

s is the distance travelled by the car

when the car stops, the final velocity, v = 0

0 = u² - 2as

2as = u²

a = u²/2s

where,

u = 46 km/h = 12.7 m/s

a = (12.7²) / (2 x 15)

a = 5.37 m/s²

When the speed of the car changes from 42 km/h to 126 km/h, the distance travelled by the car at the same acceleration is calculated as follows;

s =  u²/2a

where,

u = 115 km/h = 31.9 m/s

s = (31.9²) / ( 2 x 5.37)

s = 94.74 m

The distance travelled by the car when it skids is 94.74 m.

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Answer:

C

Explanation:

a=change in velocity/ change in time

a=( 60m/s)-(20m/s)/10s

a=(40m/s)/10s

a= 4m/s

If a moped is going 20 m/s, and speeds up to 60 m/s in 10s, the acceleration will be \(4m/s^2\). So, the correct option is C.

Acceleration is defined as the rate of change of velocity of an object with respect to time. Acceleration is a vector quantity which has both magnitude and direction. When an object moves in a circular path with uniform speed, it will be still accelerating as the direction of its velocity is changing.

It is given by the formula formula:

\(\overline{a} = \frac{v - v_0}{t} = \frac{\Delta v}{\Delta t}\)

where,

\(\overline{a}\) = average acceleration

v = final velocity

\(v_0\) = starting velocity

t = elapsed time

Given , Initial velocity= 20m/s

Final velocity= 60m/s

Time elapsed= 10s

So, acceleration= (60-20)/10= 40/10= \(4m/s^2\)

Thus, if a moped is going 20 m/s, and speeds up to 60 m/s in 10s, the acceleration will be \(4m/s^2\). So, the correct option is C.

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The electric field intensity at the given point is 1112.86 N/C.

Solution:

Step 1: Recall the formula for electric field intensity (E) in terms of charge (Q) and force (F): E = F / Q.

2: Substitute the given values into the formula: E = 0.870 N / 0.0007821 C.

3: Calculate the value of E using a calculator: E ≈ 1112.86 N/C.

Given:

Charge (Q) = 0.0007821 C

Force (F) = 0.870 N

Step 1: Recall the formula for electric field intensity (E) in terms of charge (Q) and force (F): E = F / Q.

Step 2: Substitute the given values into the formula: E = 0.870 N / 0.0007821 C.

Step 3: Calculate the value of E using a calculator: E ≈ 1112.86 N/C.

Therefore, the electric field intensity at the given point is approximately 1112.86 N/C.

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The Weight of an object is more at pole and less at equator of the earth because the distance of the pole is less than the distance of the equator from the centre of the earth.

Answer: in the Newton concluded that objects fall because they are pulled by Earth's gravity. Einstein's interpretation was that these objects do not fall.

Explanation: These objects and Earth just freely move in a curved spacetime and this curvature is induced by mass and energy of these objects. - I HOPE THAT HELPED!!

300 meters = 0.186411 miles, 65 minutes = 1.08333 hours, 35 yards = 32.004 meters

1. To convert 300 meters to miles, you can use the conversion factor 1 mile = 1609.344 meters. So, 300 meters = 300/1609.344 miles = 0.186411 miles.
2. To convert 65 minutes to hours, you can use the conversion factor 1 hour = 60 minutes. So, 65 minutes = 65/60 hours = 1.08333 hours.
3. To convert 35 yards to meters, you can use the conversion factor 1 yard = 0.9144 meters. So, 35 yards = 35*0.9144 meters = 32.004 meters.
In summary:
300 meters = 0.186411 miles
65 minutes = 1.08333 hours
35 yards = 32.004 meters

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Answer:

36 ml

Explanation:

The volume of the water was 50 ml without anything in it. When you put something in water, the amount of volume that it rises is the volume of the object put into it. It rose up to 86 ml.

86-50=36

36 ml

Answer:

See below

Explanation:

vf = vo + at      subtract vo from both sides

vf - vo = at       now divide both sides by t

(vf-vo) / t = a

The magnitude of the force exerted on the wall by the water from the fire hose is 2150.41 Newtons.

To calculate the magnitude of the force exerted on the wall is by using the equation for force:

force = rate of change of momentum

In this case, the rate of change of momentum is equal to the mass flow rate multiplied by the change in velocity. Since the water's horizontal momentum is reduced to zero, the change in velocity is equal to the initial velocity of the water.

So we have:

force = rate of change of momentum = mass flow rate * change in velocity

Plugging in the given values:

force = 55.1 kg/s * 39.1 m/s

Calculating this expression:

force = 2150.41 N

Therefore, the magnitude of the force exerted on the wall by the water from the fire hose is approximately 2150.41 Newtons.

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An electron jump refers to the transition of an electron between different energy levels in an atom. Energy levels represent the specific amounts of energy that an electron can have within an atom.

When an electron transitions from a higher energy level to a lower one, it emits a photon, which is a particle of light. In the given question, an electron is currently in energy level 3. To emit the lowest energy photon, the electron must make a jump to the closest lower energy level. Among the provided options, the electron jump from energy level 3 to energy level 2 (3 → 2) is the transition that would emit the lowest energy photon.

This is because the energy of a photon is directly proportional to the difference in energy levels between the initial and final states of the electron. A smaller difference in energy levels results in a lower energy photon being emitted. In this case, the transition from energy level 3 to energy level 2 has the smallest difference, resulting in the emission of the lowest energy photon.

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c) average fixed cost.This implies that in the case of ATC and AVC first both the cost decreases reaches the lowest point and then increases. AFC (average fixed cost) curve is always decreasing, because the average cost remains constant.

Why does the vertical gap shrink as output rises between ATC and AVC?

As output rises, the separation between the AC and AVC curves tends to decrease. This is due to the fact that as output rises, the AC's AVC component tends to grow while its AFC component tends to shrink.

What does the vertical distance between ATC and AVC curve represent?

AFC = ATC - AVC where AFC = Average fixed cost, ATC = Average total cost and AVC = Average variable cost. Therefore, the vertical distance between ATC and AVC is the AFC.

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The horizontal distance (d_forearm) between the elbow and the point where the weight of the forearm acts is known as the center of mass of the forearm.

The center of mass represents the average position of the weight distribution of an object. In the case of the forearm, this point is important in biomechanics as it helps determine the force exerted by the muscles and the stability of the arm during various movements. To find the center of mass, one can use various techniques including mathematical calculations, experimental measurements, and observation of the anatomy.

Generally, the center of mass for the human forearm is located approximately at the midpoint between the elbow and the wrist, making it roughly 50% of the total length of the forearm. However, this location may vary among individuals due to differences in body proportions, muscle mass, and bone density. In summary, the horizontal distance (d_forearm) between the elbow and the point where the weight of the forearm acts is the center of mass, typically located around the midpoint of the forearm, this point plays a significant role in the biomechanics and stability of the arm during various movements.

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Answer:

90 mAmps

Explanation:

V=IR

V/R = I

9 v / 100 ohm = .09 amps = 90 mAmps

Answer:

Temperature of the mixture=8 °C

Explanation:

Let, Temperature of the mixture=t °C

Q₁ = Q₂

=> m₁SΔΘ₁ = m₂SΔΘ₂

=> 39 × (20+t) = 21 × (60-t)

∴ t = 8 °C

hope you have understood this

pls mark it as the brainliest

Answer:

Explanation:

Let us calculate the time of flight first using the formula;

Velocity = Displacement/Time

Time = Displacement/speed

Time = 10.0/3

Time = 3.33secs

Next is to calculate how far out from the edge of the cliff it will hit the water. To get that, we will use the equation of motion;

S= ut+1/2gt²

u is the initial velocity = 0m/s

g is the acceleration due to gravity = 9.81m/s

S = 0 + 1/2(9.81)(3.33)²

S = 4.905*3.33*3.33

S = 54.39m

Hence it will hit the water at 54.39m from the edge of the cliff

Answer:

Explanation:

Applying kinematic relations along vertical direction

\(y = V_0t + \frac{1}{2}a_yt^2\)

where,

\(a_y = g\)

therefore,

\(y = 0 + \frac{1}{2}gt^2\)

The time taken

\(t = \sqrt{\frac{2y}{g}}\\\\t = \sqrt{\frac{2*10}{9.8}}\\\\t = 1.428s\)

The horizontal distance

\(x = V_yt\\\\x = 3*1.428\\\\x = 4.28m\\\\\)

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A force of 15 Newton stretches a spring to a total length of 30 cm and an additional force of 10 Newton's stretches to a Spring of 5 cm, the natural length of the spring is 58.5 cm

To find the natural length of the spring, we can use Hooke's law, which states that the force applied to a spring is directly proportional to the displacement of the spring from its natural length.

Let's denote the natural length of the spring as L.

According to the problem, a force of 15 Newton stretches the spring to a total length of 30 cm. This means that the displacement of the spring is 30 cm - L.

Using Hooke's law, we can set up the following equation:

Force = k * Displacement

where k is the spring constant.

For the first scenario, we have:
15 N = k * (30 cm - L)

Next, we are given that an additional force of 10 Newton's stretches the spring to a length of 5 cm. This implies that the displacement of the spring is 5 cm - L.

Using Hooke's law again, we can set up the following equation:

10 N = k * (5 cm - L)

Now we have two equations:

15 N = k * (30 cm - L)
10 N = k * (5 cm - L)

We can solve this system of equations to find the value of L, the natural length of the spring.

By dividing the second equation by 10, we get:

1 N = k * (0.5 cm - 0.1L)

Rearranging the equation, we have:

1 N = 0.5 k - 0.1kL

Now, let's substitute the value of k from the first equation into this equation:

1 N = 0.5 (15 N / (30 cm - L)) - 0.1 (15 N / (30 cm - L)) * L

Simplifying the equation, we get:

1 = 0.75 / (30 cm - L) - 1.5L / (30 cm - L)

Combining the terms on the right side of the equation, we have:

1 = (0.75 - 1.5L) / (30 cm - L)

Cross-multiplying, we get:

30 cm - L = 0.75 - 1.5L

Simplifying the equation, we have:

L - 1.5L = 0.75 - 30 cm

Combining like terms, we get:

-0.5L = -29.25 cm

Dividing both sides of the equation by -0.5, we get:

L = 58.5 cm

Therefore, the natural length of the spring is 58.5 cm.

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planets

Explanation:

Answer:

Original fundamental frequency = 311.111 Hz (Approx)

Explanation:

Given:

Frequency (f) = 560 Hz

3rd harmonic

Used length = 60%

Find:

Original fundamental frequency.

Computation:

Fundamental frequency = Frequency (f) / 3rd harmonic

Fundamental frequency = 560 / 3

Original fundamental frequency = 560 / 3(60%)

Original fundamental frequency = 560 / 1.8

Original fundamental frequency = 311.111 Hz (Approx)

9 × 10²¹ electrons flow through a cross section of the wire in one hour.

= 1440 C

= 9 × 10²¹ electrons

Thus, we can conclude that the 9 × 10²¹ electrons flow through a cross section of the wire in one hour.

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Answer:

E-Community

Explanation:

edge 2021

Answer:

The answer would be option E- community

Explanation:

Hope this helped :)

edg 2022

A pilot on an IFR (Instrument Flight Rules) flight plan is responsible for avoiding other aircraft at all times, especially when not in radar contact with ATC (Air Traffic Control). So. the correct option is A.

This responsibility is not solely dependent on whether they are operating under IFR or VFR (Visual Flight Rules). When weather conditions permit, pilots should maintain a proper lookout and take necessary action to avoid collisions with other aircraft, regardless of the flight rules they are following.

It's important to note that ATC provides assistance in aircraft separation, but the ultimate responsibility for safe flight lies with the pilot. ATC will advise pilots of any potential traffic conflicts, but pilots should always be vigilant and ready to respond to any situation. In cases where ATC radar coverage is limited or unavailable, pilots must rely on their skills, instruments, and communication with ATC to ensure a safe flight.

In summary, a pilot on an IFR flight plan is responsible for avoiding other aircraft at all times, even when in radar contact with ATC, and should maintain a proper lookout and take necessary action to avoid collisions when weather conditions permit, irrespective of operating under IFR or VFR. Hence, A is the correct option.

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Only NH3 remains after the reaction is finished. A 4.0 L volume is occupied by the product under these circumstances. N2 and H2 mix at a 1:3 ratio.

The volume occupied within an object's borders in three dimensions is referred to as its volume. It is sometimes referred to as the object's capacity. Three distinct methods will be used to determine volumes in order to demonstrate how precision affects data: motion of water in geometry.

Water has a size of one cubic centimeter per milliliter (1 mL) (1cm3). The dimensions and weights of certain atoms differ. The atomic mass in an atom's nucleus determines the sequence in which certain atoms appear on the periodic table.

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The force applied to a can when it is whirled aloft by a string in a circle is in the direction of the circle's centre. The can is kept moving in a circular motion by a force known as the centripetal force.

A force that operates on a moving item in a circular motion and is directed toward the centre of the circle is called a centripetal force. It is the force that prevents an object from travelling in a straight line and prohibits it from moving on a curved route.

The following formula can be used to determine the amount of the centripetal force:

\(F = m \times a\)

where:

F is the centripetal force,

The object's mass is m, and

The centripetal acceleration, abbreviated a, is the acceleration that points in the direction of the circle's center and may be calculated using the following formula:

\(a = v^2 / r\)

where:

v is the velocity of the object, and

r is the radius of the circular path.

The centripetal force always points in the direction of the circle's centre and is inversely proportional to the mass and speed of the item; an object with a higher mass and speed will exert a greater centripetal force.

Therefore, The centripetal force always acts in a radial direction, since its direction is perpendicular to the object's motion.

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An electron (charge -e) is at rest in a region of electric potential that varies as a function of position. When released it will move A. into a region of lower potential.

Since the electric potential varies as a function of position, there will be regions of higher and lower potential energy. The electron will move from a region of higher potential energy to a region of lower potential energy. Therefore, the electron will move into a region of lower potential The direction of the electric field is perpendicular to the equipotential lines. Therefore, the electron will move in the direction of the electric field if the equipotential lines are not parallel to the electric field.

If the equipotential lines are parallel to the electric field, the electron will move perpendicular to the electric field. In summary, the electron will move into a region of lower potential while following the direction of the electric field or moving perpendicular to it depending on the orientation of the equipotential lines. So therefore the correct answer is An electron (charge -e) is at rest in a region of electric potential that varies as a function of position. When released it will move A. into a region of lower potential.

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a) Circuit b represents a circuit where the ammeter correctly measures the current in the headlight.

b) The current flowing in the ammeter for Circuit a would be 6.67 A.

c) The current flowing in the ammeter for Circuit b would be 6 A.

To ensure that the ammeter correctly measures the current in the headlight, it should be placed in series with the headlight, as shown in Circuit b.

To calculate the current flowing through the ammeter in Circuit a, we can use Ohm's Law, which states that I = V/R, where I is the current, V is the voltage, and R is the resistance. In this case, the voltage across the headlight and the ammeter is 12 V, and the resistance of the ammeter is 0.1 ohms. Therefore, the current flowing through the ammeter would be I = V/R = 12/1.8 = 6.67 A.

To calculate the current flowing through the ammeter in Circuit b, we can use the same formula. Since the ammeter and the headlight are in series, they have the same current flowing through them. Therefore, the current flowing through the ammeter would be 6 A, which is the same as the current specified by the manufacturer.

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Rigel is a blue supergiant star located in the constellation Orion, which is visible in the night sky from Earth.

It is one of the brightest stars in the sky, and it has a visual magnitude of approximately 0.18, making it the seventh brightest star in the sky. Rigel is also known by its Bayer designation, Beta Orionis (β Ori).

Rigel has a radius that is estimated to be around 73 times that of the Sun, and it is thought to be around 120,000 times as luminous as the Sun. It has a surface temperature of approximately 11,000 Kelvin, which is much hotter than the Sun's surface temperature of around 5,500 Kelvin. Rigel is also a binary star system, meaning that it consists of two stars orbiting around a common center of mass.

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This means that the probability of getting less than 80% heads is at least 0.75.

To solve this problem, we can use Markov's inequality which states that for any non-negative random variable X and any a>0, the probability that X is at least a is bounded by E(X)/a.
In this case, our random variable X is the number of heads that come up in n tosses of the biased coin. Since the probability of getting a head is 0.2, we know that the expected number of heads is 0.2n.
To bound the probability of getting at least 80% heads, we want to find the probability that X is at least 0.8n. Using Markov's inequality, we have:
P(X >= 0.8n) <= E(X) / (0.8n)
Substituting in our values, we get:
P(X >= 0.8n) <= 0.2n / (0.8n)
P(X >= 0.8n) <= 0.25
So the probability of getting at least 80% heads on n tosses of a biased coin that comes up with heads with probability 0.2 is bounded by 0.25.

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Answer:

the particles that heat up the gas become more active (vibrating around)