What is. the speed of 525-kg giraffe galloping with kinetic energy of 4200 J?

Gerard's average velocity for the ride is 6 meters per second.

To find Gerard's average velocity for the ride, we can use the formula:

Average velocity = Total displacement / Total time

First, we need to convert the distance traveled from kilometers to meters:

7.20 kilometers * 1000 = 7200 meters

Next, we convert the time from minutes to seconds:

20.0 minutes * 60 = 1200 seconds

Now, we can calculate the total displacement by subtracting the initial position from the final position. Since Gerard is riding directly east, there is no change in the east-west direction, so the displacement is equal to the distance traveled:

Total displacement = 7200 meters

Finally, we substitute the values into the average velocity formula:

Average velocity = 7200 meters / 1200 seconds

Average velocity = 6 meters per second

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Answer:

False

Explanation:

The wave-particle duality says that every particle can act sometimes like a wave and sometimes like a particle. This applies to all particles, so the statement: wave-particle duality describes how some small particles act as both waves and particles is False.

Two objects are held close together. When they are released, they move toward one another. The conclusion is supported by this evidence is  the objects have opposite charges.

An electric charge is a physical property that causes matter to experience a force when in close proximity to other electrically charged matter. There are two types of electric charges: positive and negative. Protons, which are positively charged, and electrons, which are negatively charged, are subatomic particles that make up matter.

In general, the protons and neutrons in the nucleus of an atom have a net positive charge, while electrons, which orbit the nucleus, have a net negative charge. The charges of these subatomic particles are indicated by the symbols "p" for proton, "n" for neutron, and "e" for electron.

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Answer:

Explanation:

The density of water at STP, which is \(997 kg/m^3\), we can see that Saturn is less dense than water.

To determine whether Saturn is less dense than water, we must compute its density and compare it to the density of water at standard temperature and pressure (STP), which is \(997 kg/m^3\).

Saturn's density can be computed using the following formula:

density equals mass divided by volume

Saturn's mass and volume may be computed given its mass and radius.

The volume of Saturn can be determined using the sphere volume formula:

volume =\((4/3) \pi (r^3)\)

where r is Saturn's radius.

Filling in the blanks:

volume = \((4/3) \pi (5.6 \times 107) m^3\)

8.27 x 1023 \(m^3\)volume

Saturn's mass is given as \(5.68 \times 10^{26} kg.\)

We can now compute Saturn's density:

density equals mass divided by volume

density= \((5.68 x 10^{26 }kg\)) /\((8.27 \times 10^{23 }\)m³) a density of\(687 kg/m^3\)

This is due to the fact that Saturn is mostly made up of hydrogen and helium, which are far less dense than water. In reality, Saturn is the least dense planet in the Solar System, and it would float in a large enough body of water.

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Answer:

because research has been done. and many tests are conducted with other scientists to compare

Answer: Option A. Many Different scientists have added data from their own experiments to build the theory.

Explanation:

I took the test :))

Answer: 1 cal is 4.186 J, 1 kcal = 4186 J   A : 1014 m , B  200 m

Explanation:   A) Work done by climber is change in potential energy.

W = ΔEp = mgh = 67.0 kg· 9.81 m/s²· h = 160 kcal · 4186 J / kcal.

Solve h  =  160 kcal · 4186 J / kcal /67.0 kg· 9.81 m/s² = 1014 m

B  Energy is only 20 %  :   Then  h  =  0.20 ·160 kcal · 4186 J / kcal /67.0 kg· 9.81 m/s² = 200 m.

Actually, muscles also produce heat from most of the energy provided by food.

Answer:

We can use the formula for the period of a pendulum:

T = (2 * pi * sqrt(L/g))

where:

T = period (in seconds)

pi = 3.14159...

L = length of the pendulum (in meters)

g = acceleration due to gravity (9.81 m/s^2)

We can solve for L by rearranging the formula:

L = (T^2 * g) / (4 * pi^2)

We are given that the pendulum swings 20 times in 25 seconds. The period of one swing is the time it takes to complete one full cycle, so the period of 20 swings is 25 seconds divided by 20 swings, or 1.25 seconds.

Using this value for T and plugging in g, we get:

L = (1.25^2 * 9.81) / (4 * 3.14159^2)

L ≈ 0.153 meters or 15.3 centimeters

Therefore, the length of the pendulum is approximately 15.3 centimeters.

Answer:

The horizontal range of the cannonball is 9180.4 meters.

Explanation:

The horizontal range of a cannonball can be calculated using the following formula:

range = (speed * speed * sin (2 * angle)) / acceleration due to gravity

In this case, we are given that the cannon is fired at an angle of 45 degrees and that the speed of the ball is 300 m/s. We can plug these values into the formula to calculate the horizontal range of the ball:

range = (300 * 300 * sin (2 * 45)) / 9.8

= (90000 * sin (90)) / 9.8

= (90000 * 1) / 9.8

= 9180.4 m

The two strings are taut. When the system is released from rest, it accelerates at 2 m/s2 then, Mass of A = 8m/5 kg.

Let the mass of the body A be ‘m’.

The two strings are taut so they exert a tension ‘T’ on body A.

Let ‘a’ be the acceleration produced in the system.

The free body diagram of body A is given below: mA + 2T = mA + ma = mA + m(2)mA + 10T = mA + ma = mA + m(2)

As the two strings are taut, we can say that tension in both strings is equal.

Therefore 2T = 10T or T = 5T As the body A is resting on a smooth horizontal table, there is no friction force acting on the body A.

The net force acting on body A is the force due to tension in the strings. ma = 2T – mg …(1)

As per the given problem, the system is released from rest.

Hence the initial velocity is zero.

Also, we are given that the system accelerates at 2 m/s2.

Therefore a = 2 m/s2 …(2)

From the equations (1) and (2), we get, m(2) = 2T – mg …(3)⇒ m(2) = 2×5m – mg⇒ 2m = 10m – g⇒ g = 8m/5

Thus, the mass of A is 8m/5 kg.

Answer: Mass of A = 8m/5 kg.

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The proof that the maximum kinetic energy that a recoiling electron can carry away from a Compton scattering is shown below.

In Compton scattering, a photon of energy E collides with a stationary electron, transferring some of its energy to the electron and causing it to recoil. The scattered photon has energy E' and angle θ with respect to the incident photon. The energy of the recoiling electron is given by:

Ee = E - E'

where E is the energy of the incident photon, and E' is the energy of the scattered photon.

The maximum kinetic energy that the recoiling electron can carry away occurs when the scattered photon has minimum energy. This occurs when the scattered photon is emitted at an angle of 180 degrees (backscatter). At this angle, the energy of the scattered photon is given by:

E' = E/(1 + (mc^2/E)(1 - cosθ))

where m is the mass of the electron, c is the speed of light, and θ is the scattering angle.

For backscatter (θ = 180 degrees), the energy of the scattered photon is:

E' = E/(1 + 2mc^2/E)

The maximum kinetic energy of the electron is obtained when all the energy of the scattered photon is transferred to the electron:

Ee = E' = E/(1 + 2mc^2/E)

Solving for E and substituting into the expression for Ee, we obtain:

Ee = (E^2)/(2mc^2 + E)

The mass of a photon is given by:

m = E/c^2

Substituting this into the expression for Ee, we obtain:

Ee = (hc/λ)^2/(2mec^2 + hc/λ)

Finally, we can write the expression for Ee in terms of the frequency of the incident photon, f = c/λ:

Ee = hf/(1 + mec^2/hf)

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Answer: c the last one

Explanation:

Answer:

25N/s or 25kg*m/s^2

Explanation:

It is written wrong because the unit of momentum is kgm/s^2 or N/s

Answer:

E. converging surface winds

Explanation:

For the formation of tropical cyclones to occur in the northeast of the tropical Pacific Ocean, it is necessary to have converging surface winds that present a strong convection. This allows for the formation of vertical movements of an ascending nature that have great strength and are intense and violent. This also allows closed cyclonic circulation to occur at the lower levels which together with a low frontal pressure system over the waters of the Pacific Ocean can form the tropical cyclone.

Answer:

A. Heat flowing from cold to hot

Explanation:

The second law of thermodynamics speaks about entropy and directions of processes. These directions go only in one direction, just as time moves only in one direction, as we know it. It is impossible to see time moving forward in a different sense. In the same way, the processes associated with heat transfer, go in a single direction this direction is associated with bodies at different temperatures. Where heat is transferred from a higher temperature body to a lower temperature body.

Heat transfer processes from a cold body to a hot body, do not exist and can not be achieved in a natural way.

Answer:

C

Explanation:

The efficiency of the ramp is 80% and the mechanical advantage is 2.

To solve this problem, we can use the formulas for efficiency and mechanical advantage:

Efficiency = (output work / input work) x 100%

Mechanical Advantage = output force / input force

First, we need to find the output force and output work of the ramp.

The output force is the weight of the box, which is 1200 N.

The output work is the force applied by the output force over the distance it moves. Since the box moves a distance of 1.0 m up the ramp,

the output work is:

Output work = output force x output distance

Output work = 1200 N x 1.0 m

Output work = 1200 J

Next, we need to find the input force and input work of the ramp.

The input force is the force applied by the man, which is 600 N.

The input work is the force applied by the input force over the distance it moves. Since the man moves a distance of 2.5 m along the ramp,

the input work is:

Input work = input force x input distance

Input work = 600 N x 2.5 m

Input work = 1500 J

Now we can calculate the efficiency and mechanical advantage:

Efficiency = (output work / input work) x 100%

Efficiency = (1200 J / 1500 J) x 100%

Efficiency = 80%

Mechanical Advantage = output force / input force

Mechanical Advantage = 1200 N / 600 N

Mechanical Advantage = 2

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Answer:

asdasd dsa dasdasd sadas dasd asdasd asd asd dsa asdd 223 aasd ada dasd sa dasd dsaa sd adsd asasd

Explanation:

Answer:

at the end of its first second of fall

Explanation:

Can I have brainliest

Answer:

7.2 m

Explanation:

In this scenario, the man possesses kinetic energy as he is in motion.

⇒ KE = 1/2mv²

His potential energy will be equal to the kinetic energy as per the law of conservation of energy.

So, 1/2mv² = mgh [potential energy]

⇒ v²/2 = gh

⇒ h = v²/2g

⇒ h = (12)²/2(10)

⇒ h = 144/20

⇒ h = 7.2 m

The radius of the Rigel bright blue star and the procyan B is found to be   5.4x10¹⁰m and 5.4x10⁶m

Using the surface radiation formula P (energy per second in Watt) = emissivity constant * surface area * Stefan-boltzmann constant * temperature in kelvin4*.

2.7x10³¹ = 1x5.67x10⁻⁸xAx11000⁴

Making A Formula Subject = 2.7x10³¹/ (5.67*10⁻⁸x1.46x10¹⁶) = 0.3261x10²³m²

The surface area = 4R² since the form is a spherical (radius of the Rigel)

R = √ (0.3261x10²³/ 4π) = 5.1 x 10¹⁰m

The radius of the Rigel star is 5.1 x 10¹⁰m.

B) repeating the previous step

2.1x10²³ = 1xAx5.67x10⁻⁸x1000⁴, where A is the Procyon's surface area.

Creating a formula topic,

A = 2.1x10²³/(5.67x10⁻⁸x10¹⁶)

A = 0.37x10¹⁵

The star is thought to be a spherical;

A = 4R², where R is Procyon's radius.

R = √(0.37x10¹⁵/4π) = 5.4x10⁶m

The radius of the Procyan B is  5.4x10⁶m.

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Answer:

The parent cell

Explanation:

Answer

Mitosis phase - The DNA in the parent cell nucleus makes a copy of itself and is then split between the two daughter cells during mitosis

Explanation

This is biology, not really physics.

Answer:

When the air pressure in the mattress is EQUAL to atmospheric pressure.

Explanation:

I looked it up, and it is kind of obvious so I don't know why no one has answered this yet

Answer:

6.45

Explanation:

Equation: E= Q/A(8.85*10^-12)

A= Q/E / (8.85*10^-12)

A= (4.98*10^-7)/8720 / (8.85*10^-12)

A=6.45

Got it right on acellus

Big truzz  

Answer:

6.45

Explanation:

acellus

Answer:

48 m/s - 16 m/s = 32 m/s

(32 m/s )/ (8 s) = 4 m/s²

Answer:  1. The function of a lightning rod is to protect buildings, structures, and people from lightning strikes by providing a path of least resistance for the electrical current to follow, directing it safely into the ground instead of through the structure or people.

2. Charge build-up is reduced on airplanes through various methods, such as using conductive materials in the airplane's structure, applying anti-static coatings on the airplane's surface, and installing static discharge wicks or similar devices on the airplane's trailing edges, which provide a way for any accumulated charge to safely dissipate into the air.

3. A ground strap is a necessary safety feature when transferring fuel because it provides an electrical connection between the fuel container and the receiving container, allowing any static charge to safely dissipate into the ground. Without a ground strap, the static charge could build up and potentially ignite the fuel.

4. Three different methods for reducing charge build-up in clothes dryers are: (1) using dryer sheets or fabric softeners, which can help neutralize static charges on the clothes, (2) adding a damp cloth to the dryer, which can help dissipate static charges, and (3) using metal dryer balls, which can physically separate clothes and prevent them from rubbing against each other and creating static charges.

5. Four different methods for reducing charge build-up in a computer room with a carpet are: (1) using conductive flooring or carpet tiles that can help dissipate static charges, (2) using anti-static mats or wrist straps for personnel who work in the room, (3) using air ionizers or humidifiers, which can help neutralize static charges in the air, and (4) grounding all equipment and devices in the room to prevent the buildup of static charges.

Explanation:

I hope this helps!

The rock's altitude y at time t, thrown with initial velocity v, is given by

\(y=74\,\mathrm m+vt-\dfrac12gt^2\)

where \(g=9.80\frac{\rm m}{\mathrm s^2}\) is the acceleration due to gravity.

After t = 2.7 s, the rock reaches the water (0 altitude), so

\(0=74\,\mathrm m+v(2.7\,\mathrm s)-\dfrac12g(2.7\,\mathrm s)^2\)

\(\implies v=-\dfrac{74\,\mathrm m-\frac g2(2.7\,\mathrm s)^2}{2.7\,\mathrm s}\approx-14.177\dfrac{\rm m}{\rm s}\)

so the rock was thrown with a velocity with magnitude 14 m/s and downward direction.

Its velocity at time t is \(v-gt\) (with no horizontal component), so that at the moment it hits the water, its velocity is

\(v-g(2.7\,\mathrm s)\approx-40.637\dfrac{\rm m}{\rm s}\)

That is, its final velocity has an approximate magnitude of 41 m/s, also directed downward.

In general, option c - warming it up on the stove - is often an effective method to increase the reaction rate.

Increasing the temperature of a reaction generally leads to faster reaction rates. This is because higher temperatures provide more thermal energy to the reactant particles, causing them to move faster and collide more frequently. The increased collision frequency and energy lead to more successful collisions and a higher likelihood of effective molecular interactions, which speeds up the reaction. On the other hand, options a and b - putting it in the fridge where it is cold or covering it with a blanket to make it dark - are unlikely to have a significant effect on the reaction rate. While temperature can influence reaction rates, cooling the reaction or making it dark typically reduces the kinetic energy of the particles, resulting in slower reaction rates. Option d - there is nothing you can do to change the speed of the reaction - is not accurate. The reaction rate can be influenced by various factors such as temperature, concentration, catalysts, and surface area, among others. By manipulating these factors, it is often possible to control and change the speed of a reaction. Hence option c, is correct

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Answer:

67500

Explanation:

F=ma

F = 1500 × 45

F = 67500