n which phase of the throwing motion is maximum external rotation achieved? wind-up cocking acceleration deceleration

If a catcher stops a 92 mph (41. 1 m/s) pitch in his glove and slows it to rest in 0. 15 m with a force of 803 N, the ball's mass is 0.14 kg.

According to Newton's Second Law of Motion, when a force acts on a mass, acceleration (or gaining speed) occurs (object). A good illustration of this law of motion in action is when you are riding a bicycle. The mass is represented by your bicycle. The force is generated by your leg muscles as they push against the bicycle pedals.

a = (Vf²- Vi²)/2.d

The distance is 0.15 meters, the initial velocity is 92 miles per hour, or 41 m/s, and the final velocity is 0 (rest).

a= -5603 m/s²

use the second Newton law,

F= m.a

m= F/a

m= 803N/5603 m/s²

m= 0.14kg.

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The linear speed of the bicycle is approximately 14145.1 in./min if a bicycle with 19-in.-diameter wheels has its gears set so that the chain has a 6-in. radius on the front sprocket and 4-in. radius on the rear sprocket.

We can use the principle of similar triangles to find the linear speed of the bicycle.

Let's consider a single revolution of the front sprocket. During this revolution, the chain moves through an arc of 6 inches on the front sprocket and 4 inches on the rear sprocket. These two arcs form similar right triangles with the radius of the sprocket as the hypotenuse and half of the circumference of the sprocket as the other two sides.

So, the ratio of the length of the arcs is equal to the ratio of the radii of the sprockets:

Arc length on front sprocket / Arc length on rear sprocket = 6 in. / 4 in. = 3/2

Next, we can find the linear speed of the bicycle. We can start by finding the circumference of each wheel and then the linear speed of one revolution of the front sprocket.

Circumference of the front wheel = pi * 19 in. = 59.08 in.

Circumference of the rear wheel = pi * 19 in. = 59.08 in.

Linear speed of one revolution of the front sprocket = Circumference of the front wheel * Arc length on front sprocket / (2 * pi) = 59.08 in. * 6 in. / (2 * pi) = 74.49 in.

Finally, we can find the linear speed of the bicycle by multiplying the linear speed of one revolution of the front sprocket by the number of revolutions per minute made by the cyclist.

Linear speed of the bicycle = Linear speed of one revolution of the front sprocket * Cyclist's pedal rate (RPM) = 74.49 in. * 190 RPM = 14145.1 in./min

So, the linear speed of the bicycle is approximately 14145.1 in./min.

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Capacity of the gas tank . . . Liters

Distance to the next town . . . Kilometers

Smaller units would produce bigger numbers.

It's best to use the units that produce the handiest, most convenient numbers.  That way, it's easier to remember the number, write it down without mistakes, and tell other people about it.

Since the unit we will use to measure the volume of gas tank is litre, because its volume is large so it is very difficult to say or learn such big quantity in small units.

Measurement is to find a number that shows the amount of something. A measurement unit is a standard quantity used to express a physical quantity.

measurement, the process of associating numbers with physical quantities and phenomena. Measurement is fundamental to the sciences; to engineering, construction, and other technical fields; and to almost all everyday activities.

So, the metric unit we would use to measure the distance to the next town is kilometer.

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Answer:

735 N

Explanation:

Total mass (m) = mass of the student + mass of the bag

= 65 kg + 10 kg = 75 kg

\(Weight = mg \\ = 75 \times 9.8 \\ = 735 \: N\)

Answer:

Oxygen and nutrients from the mother's blood are transferred across the placenta to the fetus through the umbilical cord. This enriched blood flows through the umbilical vein toward the baby's liver. There it moves through a shunt called the ductus venosus. This allows some of the blood to go to the liver.

For a projectile thrown with an initial speed v at an angle θ above the horizontal, the maximum height h_max reached and the range R (horizontal distance) it travels are given by: h_max = (v^2 * sin^2 θ) / 2g and R = (v^2 * sin 2θ) / g

where g is the gravitational acceleration 9.8 m/s^2. Given that a rock is thrown with a speed of 12.0 m/s and angle 30° above the horizontal, it travels 17.0 m before hitting the ground. We can find the height it was thrown from using the equation: R = (v^2 * sin 2θ) / g

Rearranging for v^2 gives: v^2 = R * g / sin 2θ

Substituting the given values of R, g, and θ: v^2 = (17.0 m) * (9.8 m/s^2) / sin(2 * 30°)v^2 = 166.71 m^2/s^2

Taking the square root of both sides: v = 12.91 m/s

Now using the equation for maximum height: h_max = (v^2 * sin^2 θ) / 2g

h_max = (12.91 m/s)^2 * sin^2 (30°) / (2 * 9.8 m/s^2)

h_max = 8.92 m

Therefore, the rock was thrown from a height of 8.92 m.

For the second part, the rock is thrown straight upward with a speed of 6.00 m/s. It takes 1.636 s to fall back to the ground. Using the equation h_max = v^2 / 2g, the maximum height reached by the rock is:

h_max = (6.00 m/s)^2 / (2 * 9.8 m/s^2) = 1.83 m

Therefore, the rock was released from a height of 1.83 m.

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Answer:

1080000

Explanation:

300 x 60s=18000m/minute

18000 x 60min=1080000m/h

Explanation:

Answer:

50 km/h

Explanation:

d = 100km

t = 2 hours

average speed = total distance/total time

= 100/2  = 50 km/h

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Answer:

3.75 hours

Explanation:

Take 150 divided by 40 = 3.75 hours

Answer:

3.75 hours

Explanation:

The formula for finding time (how long) is t = s/v where s is distance, v is speed and t is time.

We know that the distance that a bus wants to travel is 150 km with an average speed of 40 km/h. Therefore, substitute s = 150 km and v = 40 km/h in the formula:

\(\displaystyle{t=\dfrac{150 \, \text {km}}{40 \, \text {km/h}}}\\\\\displaystyle{t=3.75 \, \text{hours}}\)

Therefore, it’ll take about 3.75 hours for a bus to travel 150 km distance.

In a capacitor, the peak current and peak voltage are related by the capacitance of the capacitor and the frequency of the alternating current passing through it. This relationship is given by the formula Ipeak = C x Vpeak x 2πf, where Ipeak is the peak current, Vpeak is the peak voltage, C is the capacitance, f is the frequency of the alternating current, and 2π is a constant.

In a capacitor, the peak current and peak voltage are related by the capacitive reactance (Xc). The capacitive reactance is given by the formula Xc = 1/(2πfC), where f is the frequency of the alternating current (AC) signal, and C is the capacitance of the capacitor.

The peak current (Ip) can be calculated using Ohm's Law: Ip = Vp/Xc, where Vp is the peak voltage. So, the peak current and peak voltage are related through the capacitive reactance in a capacitor.

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The magnitude of the centripetal acceleration of the child is F = 160 N.

We can solve this problem using the concept of centripetal force. The centripetal force is the force that keeps an object moving in a circular path, and is given by:

\(F = mv^2/r\)

where F is the centripetal force, m is the mass of the object, v is its velocity, and r is the radius of the circle.

In this problem, the 30-kg child is sitting 3 m from the center of the merry-go-round, which is moving with a speed of 4 m/s. We can calculate the centripetal force acting on the child as follows:

\(F = mv^2/r\)

F = (30 kg)(4 m/s)^2/(3 m)

F = 160 N

Therefore, the centripetal force acting on the child is 160 N. This force is provided by the frictional force between the child and the merry-go-round, which allows the child to move in a circular path with the merry-go-round.

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The following question may be like this:

A child (30 kg) sits 4m from the center of a merry-go-round moving at an angular velocity of 2.3 rad/s. What is the magnitude of the centripetal acceleration of the child.

Answer:

more turns in a coil will make stronger magnet field and reversed direction of the current will change the pole of the magnet

Explanation:

by winding a coil , it concentrates magnetic field of the current in smaller space so more turns of coil mean stonger magnetic field.

explanation for change of direction of current is in pic.

i hope it helps.

More turns in a coil will make stronger magnet field and reversed direction of the current will change the pole of the magnet.

By winding a coil , it concentrates magnetic field of the current in smaller space so more turns of coil mean stonger magnetic field.

In a full electrical circuit, current is the rate at which electrons move past a certain point. Current = flow, at its most fundamental level.

The international unit for measuring current is an ampere (AM-pir), sometimes known as an amp. It describes how many electrons.

In a circuit, a current of 1 ampere corresponds to the movement of 1 coulomb of electrons, or 6.24 billion billion (6.24 x 1018) electrons, through a single location in a second.

Therefore, More turns in a coil will make stronger magnet field and reversed direction of the current will change the pole of the magnet.

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Answer:

1467 atoms

Explanation:

5730 yrs = carbon 14 half life

10 740 / 5730 = 1.87 half lives

400 = C (1/2)^1.87

C = original = ~1467 atoms

Answer:The first spacecraft which did not merely fly by a jovian (or giant) planet, but actually went into orbit around it for an extended period of time was option a, Galileo. The Galileo spacecraft was launched in 1989 and orbited Jupiter for almost eight years, from 1995 to 2003.

Explanation:

The force on the bullet of mass 21 g  is 14795.12 N.

Force is the product of mass and acceleration.

To calculate the force exerted on the bullet while it is being accelerated, we use the work energy relation below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the force on the bullet is 14795.12 N.

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Answer:

your answer should be c

Answer:

D.the branch that deals with the relations of organisms to one another and to their physical surroundings

Answer:

\(\leq 40\)

Explanation:

So if you’re going 40mph, your speedometer may read up to 50.25mph - but it can never read less than 40mph. In order to stay within the law, carmakers calibrate their speedometers to slightly overreport their vehicles' speeds.

Answer: Volcanoes and ridges are landforms that are created by the movement of tectonic plates.

Explanation:

Answer:

Volcanoes and ridges

Explanation: As the bottom plate is heated up by the Earth's hot mantle, a material called magma forms. It rises. Over time magma erupts through the plates. Many such volcanoes are found on "the Pacific Ring of Fire."

Answer: double helix

Explanation: Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups.

Hope this helps

Plz mark brainleist

The twisted ladder shape of the DNA called double helix.

A polymer made of two polynucleotide chains that coil around one another to form a double helix is called deoxyribonucleic acid. All known organisms and many viruses have genetic information in the polymer that is necessary for their development, operation, growth, and reproduction.

Nucleic acids include DNA and ribonucleic acid (RNA). Nucleic acids are one of the four main categories of macromolecules that are necessary for all known forms of life, along with proteins, lipids, and complex carbohydrates (polysaccharides).

Because the two DNA strands are made up of simpler monomeric units termed nucleotides, they are referred to as polynucleotides.

Each nucleotide is made up of a phosphate group, a deoxyribose sugar, and one of the four nitrogen-containing nucleobases (cytosine [C], guanine [G], adenine [A], or thymine [T]).

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To find a coterminal angle, we need to add or subtract multiples of 360° from the given angle, Measures of angles can be given by 95° – (1,450n)°, for any integer n, 95° – (1,080n)°, for any integer n, 95° – (780n)°, for any integer n, 95° – (340n)°, for any integer n

The question asks about an angle that is coterminal with a 95° angle. Coterminal angles are angles that have the same initial and terminal sides but differ by a multiple of 360°.

In this case, 95°, we can use any of the options to find coterminal angles.For example, if we choose the option 95° – (1,080n)°, the resulting angles will be coterminal with 95°. By substituting different values of n, we can obtain different coterminal angles such as 985°, -95°, -1,175°, etc

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When heating an ice bucket of water for several hours, the temperature of the water will rise to the melting point of ice, which is 0 degrees Celsius (32 degrees Fahrenheit).

Once all the ice has melted, the temperature of the water will not increase significantly, even with continued heating.

Instead, the energy provided by the heat source will be used to convert the remaining ice into water rather than increasing the water's temperature.

This is because the energy is being absorbed by the phase change from solid (ice) to liquid (water), known as latent heat, rather than increasing the kinetic energy of the water molecules.

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The tension required to provide the necessary upward force is 74.0 N assuming an angle of 30 degrees between the strap and the vertical axis of the pulley system.

The necessary upward force is 64 N. To determine the tension required to provide this upward force, use the equation for tension:

Tension = force / cos(θ)where θ is the angle between the strap and the vertical axis of the pulley system.

Since the angle is not given, assume it is 30 degrees, which is common for pulley systems.Tension = 64 N / cos(30°)Tension = 74.0 N

In conclusion, the tension required to provide the necessary upward force is 74.0 N assuming an angle of 30 degrees between the strap and the vertical axis of the pulley system.

The equation used to determine the tension is Tension = force / cos(θ), where θ is the angle between the strap and the vertical axis of the pulley system.

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(a) The moment of inertia of the system about the axis can be calculated using the formula for the moment of inertia of a point mass rotating about an axis.

(b) The angular momentum of the system about the axis can be determined by multiplying the moment of inertia by the angular speed.

(c) If the masses are pulled into a smaller radius, the moment of inertia will change, resulting in a new angular momentum for the system.

(d) The new angular speed of each mass can be calculated using the principle of conservation of angular momentum.

(e) The change in energy of the masses can be determined by comparing the initial and final kinetic energies of the system.

(a) To calculate the moment of inertia of the system about the axis, we consider the two point masses rotating at a given radius. The moment of inertia for each point mass is given by the formula I = m * r², where m is the mass and r is the radius.

Since there are two masses, we can calculate the total moment of inertia by summing the individual moments of inertia.

(b) The angular momentum of the system is determined by multiplying the moment of inertia by the angular speed. Using the formula L = I * ω, where L is the angular momentum, I is the moment of inertia, and ω is the angular speed, we can find the angular momentum of the system.

(c) If the masses are pulled into a smaller radius, the moment of inertia will change. We can calculate the new moment of inertia using the same formula as in (a) but with the new radius. With the new moment of inertia, we can determine the new angular momentum of the system.

(d) To find the new angular speed of each mass, we apply the principle of conservation of angular momentum. The initial angular momentum of the system is equal to the final angular momentum. By rearranging the equation L = I * ω and solving for ω, we can calculate the new angular speed.

(e) The change in energy of the masses can be determined by comparing the initial and final kinetic energies of the system. The initial kinetic energy is given by (1/2) * I * ω², where I is the initial moment of inertia and ω is the initial angular speed.

Similarly, the final kinetic energy can be calculated using the new moment of inertia and angular speed. The difference between the initial and final kinetic energies represents the change in energy of the masses.

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This is not a gamma radiation because there is a change in the atomic number of the daughter nucleus. It is rather a beta decay.

We have to note that when we talk about a decay we are talking about the manner that we can be able to break up the atom of a radioactive substance so that we can be able to produce a new substance.

We can see now that what we have here is the loss of a beta ray or an electron from the specie that is shown. This is evidenced by the change in the atomic number of the daughters nucleus.

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Answer:

1. An autotroph

2. Domain

3. Reproduction

4. Kingdom

5. Multicellular Organism

6. Genetic trait

Explanation: Took Bio honors 1 & 2

a. The ring pushes on the rider with a force of 4.13 × 10^3 N at the top of the ride.

b. The ring pushes on the rider with a force of 5.81 × 10^3 N at the bottom of the ride.

c. The longest rotation period of the wheel that will prevent the riders from falling off at the top is 6.02 s.

A) At the top of the ride, the rider is in circular motion due to the normal force provided by the ring. The force of gravity acts downwards and the normal force acts upwards. The net force acting on the rider at the top is equal to the centripetal force required for circular motion.

The centripetal force is given by:

Fc = mv²/r

where m is the mass of the rider, v is the velocity of the rider in circular motion, and r is the radius of circular motion.

The velocity of the rider can be found from the period of rotation:

T = 2πr/v

v = 2πr/T

Substituting this expression for v into the expression for Fc, we get:

Fc = m(2πr/T)²/r = 4π²mr/T²

At the top of the ride, the normal force is equal to the centripetal force:

Fn = Fc = 4π²mr/T²

Substituting the given values, we get:

Fn = 4π²(59.0 kg)(9.81 m/s²)(9.00 m)/(4.40 s)² = 4.13 × 10³ N

B) At the bottom of the ride, the rider is still in circular motion due to the normal force provided by the ring. The force of gravity acts downwards and the normal force acts upwards. The net force acting on the rider at the bottom is equal to the sum of the centripetal force required for circular motion and the force of gravity:

Fnet = mv²/r + mg

where m is the mass of the rider, v is the velocity of the rider in circular motion, r is the radius of circular motion, and g is the acceleration due to gravity.

Using the same expressions for v and Fc as in part A, we can rewrite the above equation as:

Fnet = Fc + mg = 4π²mr/T² + mg

At the bottom of the ride, the normal force is equal to the net force:

Fn = Fnet = 4π²mr/T² + mg

Substituting the given values, we get:

Fn = 4π²(59.0 kg)(9.81 m/s²)(9.00 m)/(4.40 s)² + (59.0 kg)(9.81 m/s²) = 5.81 × 10³ N

C) The condition for the rider to not fall off at the top of the ride is that the centripetal force required for circular motion is greater than or equal to the force of gravity:

Fc ≥ mg

Substituting the expression for Fc from part A and solving for T, we get:

T ≤ 2π√(r/g)

Substituting the given values, we get:

T ≤ 2π√(9.00 m/9.81 m/s²) = 6.02 s

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Explanation:

Density=mass/volume

mass=x

10.49=X/12.99

X=10.49 X12.99

X=136.29657

mass=136.3g/cm^3

I hope it helped.

A -4.30 μC charge is moving at a constant speed of 7.80×105m/s in the +x-direction relative to a reference frame. At the instant when the point charge is at the origin, the magnetic field vector it produces at point x = 0.500 m, y = 0, z = 0 is approximately -3.460 × 10^(-5) T, pointing in the negative x-direction.

To determine the magnetic field vector produced by a moving charge at a specific point, we can use the Biot-Savart law. The Biot-Savart law states that the magnetic field at a point due to a current-carrying element is directly proportional to the magnitude of the current and inversely proportional to the distance from the element.

The formula for the magnetic field produced by a moving charge is given by:

B = (μ₀ / 4π) × (q × v × sin(θ)) / r²

Where:

B is the magnetic field

μ₀ is the permeability of free space (4π × 1\(0^(^-^7\)) T·m/A)

q is the charge of the moving particle (in this case, -4.30 μC)

v is the velocity of the charge (7.80 × 1\(0^5\) m/s)

θ is the angle between the velocity vector and the line connecting the charge and the point of interest (in this case, 90 degrees since it is at the origin)

r is the distance between the charge and the point of interest (in this case, 0.500 m)

Plugging in the values:

B = (4π × 1\(0^(^-^7\) T·m/A) × (-4.30 × 1\(0^(^-^6\) C) × (7.80 × 1\(0^5\) m/s) ×sin(90°) / (0.500 m)²

Since sin(90°) equals 1, the equation simplifies to:

B = (4π × 1\(0^(^-^7\)) T·m/A) × (-4.30 × 1\(0^(^-^6\) C) × (7.80 × 1\(0^5\) m/s) / (0.500 m)²

Calculating the expression:

B ≈ -3.460 × 1\(0^(^-^5^)\)T

Therefore, at the instant when the point charge is at the origin, the magnetic field vector it produces at point x = 0.500 m, y = 0, z = 0 is approximately -3.460 × 1\(0^(^-^5^)\) T, pointing in the negative x-direction.

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