The soccer player is running at a speed of 4m/s when he slides on the ground, coming to a stop distance of 2m. What is the acceleration?

The magnitude of the force the object applies back is 10 N in the opposite direction.

Newton's third law of motion states that for every action, there is an equal and opposite reaction.

This means that if an object applies a force on another object, the second object will apply an opposite force back. The magnitude of the force applied back is equal to the magnitude of the applied force.

Thus, if you push a wall with a force of 10 N, the wall will apply an equal and opposite force of 10 N back on you.

\(F_{applied}=-10 N\), when the minus (-) signifies the direction of force applied by the object is opposite to the direction of force applied to it.

This law is the foundation of many phenomena of physics, including the motion of objects and the behavior of fluids.

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Changes to temperature or pH can change enzyme activity due to the fact that enzymes are sensitive to their environment. As the temperature or pH of the environment is altered, the structure of the enzyme molecule can be affected, leading to changes in enzyme activity.

Changes to temperature or pH can affect enzyme activity because they can alter the structure of the enzyme. Enzymes are proteins, and their structure is crucial to their function. Changes to temperature can cause enzymes to denature, or lose their structure, which in turn affects their ability to catalyze reactions. Similarly, changes to pH can also affect the structure of the enzyme, as it can change the charges on the amino acids that make up the enzyme. This can also lead to a loss of function. Therefore, it is important for enzymes to be in an environment with the optimal temperature and pH for them to function properly.

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Work = Force x distance

Force = 250 N

distance = 2 m

Replacing with the values given:

W = 250 N x 2 m = 250 kg m / s^2 x 2m = 500 kgm^2/s^2 = 500 J

1 N = 1 kgm/s^2

1J= 1 kg m^2 /s^2

Answer:

PE = 44.1 J

Explanation:

Ok, to have the specific data, the first thing we must do is convert from grams to kilograms. Since mass must always be in kilograms (kg)

We have:

We convert it using a rule of 3, replacing, simplifying units and solving:

==================================================================

Earth's gravity is known to be 9.8 m/s², so we have:

Data:

Use formula of potencial energy:

Replace and solve:

Since the decimal number, that is, the number after the comma is less than 5, it cannot be rounded, then we have this result.

The potential energy of the volleyball is 44.1 Joules.

Greetings.

For this use the formula:

d = Vo * t - (at^2) / 2

Clearing t:

t = d/(v + 0.5*a)

Replacing:

t = 5 m / (7.2 m/s + 0.5 * (-1.1 m/s²)

Resolving:

t = 5 m / (7.2 m/s + (-0.55 m/s²)

t = 5 m / 6.65 m/s

t = 0.75 s

Result:

The time will be 0.75 seconds.

Two streets are about to be paved. The first street is 394 m long and the second street is 2.2 km long. The total distance to be paved is 2594 m or 2.594 km.

Distance is a numerical or now and again qualitative size of ways far aside objects or points are. In physics or normal usage, distance can also refer to a physical period or an estimation based on different standards.

Distance is the full motion of an item without any regard for the path. we are able to outline distance as to how a whole lot of ground an item has included in spite of its beginning or ending point.

1 km = 1000 m

According to the question,

the first street is 394 m long = 0.394 km

second street is 2.2 km long = 2.2 × 1000

                                                = 2200 m.

Total distance in km = 2.2 + 0.394 = 2.594 km

Total distance in m = 2200 m +  394 m = 2594 m

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The angular acceleration of the disk is 6 rad/s^2. The angular speed of the disk at t = 10 sec is 60 rad/s. The disk has turned through an angle of 1200 radians at t = 20 sec.

To determine the angular acceleration, the angular speed at t = 10 sec, and the angle turned at t = 20 sec, we can analyze the torques acting on the disk.

The net torque acting on the disk can be calculated using the equation:

Στ = Iα

Where Στ is the net torque, I is the moment of inertia of the disk, and α is the angular acceleration.

The moment of inertia of a uniform disk rotating about its center can be given as:

I = (1/2) * m * r^2

Where m is the mass of the disk and r is the radius.

In this case, the mass of the disk is 20 kg, and the radius is 50 cm (0.5 m). Substituting these values into the moment of inertia equation, we get:

I = (1/2) * 20 kg * (0.5 m)^2 = 2.5 kg·m^2

Now let's calculate the net torque by considering the torques due to each force:

Στ = (F_1 * r) - (F_2 * r) + (F_3 * r) - (F_4 * r)

Substituting the values, we get:

Στ = (10 N * 0.5 m) - (3 N * 0.5 m) + (50 N * 0.5 m) - (5 N * 0.5 m) = 15 N·m

Since the net torque is equal to the moment of inertia multiplied by the angular acceleration (Στ = Iα), we can rearrange the equation to solve for α:

α = Στ / I = 15 N·m / 2.5 kg·m^2 = 6 rad/s^2

So the angular acceleration of the disk is 6 rad/s^2.

To find the angular speed at t = 10 sec, we can use the equation:

ω = ω_0 + αt

At t = 0 sec, the disk is at rest, so the initial angular speed ω_0 is 0. Plugging in the values, we get:

ω = 0 + 6 rad/s^2 * 10 sec = 60 rad/s

Therefore, the angular speed of the disk at t = 10 sec is 60 rad/s.

To determine the angle turned at t = 20 sec, we can use the equation:

θ = ω_0t + (1/2)αt^2

Again, at t = 0 sec, the disk is at rest, so the initial angle θ_0 is 0. Plugging in the values, we get:

θ = 0 + (1/2) * 6 rad/s^2 * (20 sec)^2 = 1200 rad

Therefore, the disk has turned through an angle of 1200 radians at t = 20 sec.

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(a) This is because the lowest three standing wave vibration frequencies for a closed-open pipe correspond to odd harmonics (1st, 3rd, and 5th).

As for the length of the pipe, we can use the formula L = (n/4) * wavelength, where n is the harmonic number and wavelength is the distance between two adjacent nodes. For the first harmonic (n=1) with a frequency of 120 Hz, the wavelength is four times the length of the pipe. Thus, L = (1/4) * wavelength = (1/4) * (4L) = L. Solving for L, we get L = wavelength/4 = (speed of sound)/(4 * frequency) = 0.71 meters (assuming the speed of sound in air is 343 m/s).

(b), the frequencies of the first two harmonic vibrations on a pipe of the same length but of the other type (open-closed) can be found using the formula f = (n * v)/(2L), where v is the speed of sound in air and n is the harmonic number. For the first harmonic (n=1), we have f = v/(2L) = (343 m/s)/(2 * 0.71 m) = 242 Hz. For the second harmonic (n=2), we have f = 2v/(2L) = (2 * 343 m/s)/(2 * 0.71 m) = 485 Hz.

Therefore, the frequencies of the first two harmonic vibrations on an open-closed pipe of the same length are 242 Hz and 485 Hz, respectively.

Hence, The formula for the frequency of a standing wave in a pipe depends on the speed of sound, the length of the pipe, and the harmonic number.

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1. Risk-free rate 5%

2. Time until the option expires 4 yrs.

3. Strike price: $ 45mn.

4. For calculating project value & standard deviation, we need to fill in the inputs in the below table. For calculating the PV of cash flows, use discounting rate of 13%. Standard deviation: stdev(5.85,4.55,2.6) = 1.64%

5. Sum of expected cash flows at t = 0: 37.61+18.28+4.18 = $ 60.07

The above-numbered figures are the inputs for the Black Scholes model.

The Black-Scholes model is used to determine the fair value of options contracts. This formula can estimate how the price of financial instruments such as futures and stocks change over time. Black-Scholes is used to determine the fair or theoretical value of a call or put option based on six variables including volatility option type underlying price time strike price and the risk-free rate pricing model.

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Answer:

The Artemis program is a U.S. government-funded international human spaceflight program that has the goal of landing the first woman and the next man on the Moon, specifically at the lunar south pole region, by 2024.

Follow me please

Mark brainliest

Answer:

17m/s

Explanation:

v=u+at

v=5+3*4

v=17m/s

Answer:

Explanation:

The area of the floor covered by his both feet can be found by using the formula

\(a = \frac{f}{p} \\ \)

f is the force

p is the pressure

From the question we have

\(a = \frac{400}{400} = 1 \\ \)

We have the final answer as

Hope this helps you

Answer:

when he threw the baseball high up into the air

Answer:

5

Explanation:

From the attachement,

M.A =  Load(L)/Effort(E)

M.A = L/E...................... Equation 1

Where M.A = .Mechanical Advantage, L = Load, E = Effort.

Given: L = 500 N, E = 100 N

Substitute these values into equation 1

M.A = 500/100

M.A = 5.

Hence the actual mechanical advantage of the pulley is 5

Answer:

a)   y = y₀ - 4.9, v = -9.8 m / s, b)  y =y₀ - 19.6,  v = - 19 m / s

c)  y =y₀ - 44.1, v = - 29.4 m / s

Explanation:

To solve this exercise let us use the kinematic relations

          y =y₀ + v₀ t - ½ g t²

          v = v₀ - g t

They indicate that the body is released therefore the initial velocity is zero v₀ = 0

          y = y₀ - ½ g t²

          v = - gt

a) the position and velocity for t = 1s

         y = y₀ - ½ 9.8 12

         y = y₀ - 4.9

         v = - 9.8 1

         v = -9.8 m / s

the negative sign indicates that the velocity is directed downwards

b) t = 2 s

         y =y₀ - ½ 9.8 2 2

         y =y₀ - 19.6

         v = - 9.8 2

         v = - 19 m / s

c) t = 3 s

        y = y₀ - ½ 9.8 3 2

        y =y₀ - 44.1

        v = - 9.8 3

        v = - 29.4 m / s

The formula for calculating the force is to multiply the mass of the body by the acceleration of the body.

When we move a body, we apply a force on it and the force that we apply on the body can be calculated by using the standard relation derived from the Newton's second law of motion.

F = dp/dt

P = Mass x Velocity

If the mass of the body is constant.

F = Mass x d(velocity)/dt

F = Mass x Acceleration

So, the formula for calculating the force applied on the body is the product of the mass and acceleration acting on the body.

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Moving from the element with atomic number 10 to atomic number 11 on the periodic table changes observed are :

Reactivity increases,

Sodium has more shell,

Valence electrons in sodium are farther from the nucleus,

Atomic number 11 does not have a full electron shell

In increasing order of atomic number, the elements are listed. The amount of protons in an atom's nucleus is indicated by its atomic number. An element's identity is determined by its proton count. The number of protons determines an element's identity.

The indirect relativistic effect amplifies the decreases in the binding energies of the valence d and f electrons as they move down the periodic table. As a result, the d electrons in the heavier coinage metals become more chemically active, leading to higher oxidation states in these elements.

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Answer:

The distance traveled!

Explanation:

This is a velocity time graph of an object moving in a straight line due North.

Answer:

R = 4.77 ohms

Explanation:

Four resistors are given such that,

R₁ = 2 ohms

R₂ = 3 ohms

R₃ = 5 ohms

R₄ = 10 ohms

Here, R₁ and R₂ in series. The equivalent is given by :

R₁₂ = R₁ + R₂

= 2 + 5

R₁₂ = 7 ohms

Similarly, R₃ and R₄ are in series. so,

R₃₄ = R₃ + R₄

= 10+5

R₃₄ = 15 ohms

Now, R₁₂ and R₃₄ are in parallel. So,

\(\dfrac{1}{R}=\dfrac{1}{R_{12}}+\dfrac{1}{R_{34}}\\\\\dfrac{1}{R}=\dfrac{1}{7}+\dfrac{1}{15}\\\\R=4.77\ \Omega\)

So, the equivalent resistance s 4.77 ohms.

Answer:

2

Explanation:

To find force it's force = mass times acceleration so to find mass you would divide force by acceleration

Answer:

parallel circuit with switch closed

Explanation:

The two circles with X's ( the load) are wired side-by-side ...in parallel.

The switch ( between the two dots  at the top) is CLOSED

Answer:

See below

Explanation:

F = ma

F / a = m

4000 / 65 = 61.5 kg    (pretty light car.....did you forget a decimal point in 'a')

Wanda can reply to her friend by saying that she is using a telephoto lens for their photography outing.

A telephoto lens is a type of camera lens that is designed to capture distant subjects by using a longer focal length than a standard lens. Telephoto lenses typically have a focal length of 60mm or longer, which allows them to see and record a very narrow view. This makes them ideal for capturing subjects that are far away, such as wildlife, sports events, and landscapes. Telephoto lenses are also popular for portrait photography because they can create a shallow depth of field, which helps to isolate the subject from the background.

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Answer:

Aesthetic sports

Explanation:

Aesthetic sports are the one's that need well-developed physical qualities such as strength, agility, stamina, flexibility, and technical knowledge and artistry, in addition to technical ability and artistry. Elite athletes in these sports generally have a low abdominal fat , and the ranking is subjective.

In aesthetic sports like gymnastics, swimming, and figure skaters, dynamic and proactive flexibility is required.

The efficiency of the machine is determined as 83.3 %.

M.A = load/Effort

M.A = 4500/900 = 5

V.R = distance moved by effort/distance moved by load

V.R = 6/1 = 6

E = M.A/V.R x 100%

E = (5/6) x 100%

E = 83.3 %

Thus, the efficiency of the machine is determined as 83.3 %.

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Answer:

It ran at an average of 2 meters per second.

Explanation:

Answer:

Fnet = 16.98204316 N will point right

Explanation:

q₁ and q₂ both positive ⇒ F₁₂ will point right, repel

q₂ pos and q₃ neg        ⇒ F₂₃ will point right, attract

Fnet = F₁₂ + F₂₃

Fnet = k.q₁.q₂/r₁₂² + k.q₂.q₃/r₂₃²

Fnet = 9x10⁹x 9.33x10⁻⁶x4.22x10⁻⁶/(0.18)² +  9x10⁹x 4.22x10⁻⁶x8.42x10⁻⁶/(0.23)²

Fnet = 0.3543534/(0.18)² +  0.3197916/(0.23)²

Fnet = 10.93683333 + 6.04520983

Fnet = 16.98204316 N

Answer:

The Gravitational Attraction of Tom and Sally is 28.4631292 N.

Explanation:

The gravitational force formula is

gravitational force =  (gravitationalconstant)(massofobject1)(massofobject2)/(distancebetweenobjects)^2

So if you plug in the values given, you get 28.4631292.