A car accelerates from 2.6 to 14 m/sec in 11.2 seconds. Calculate its acceleration.
m/se

Answer:

hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9

The displacement of the penguin is 500 m East and the velocity is 41.67 m/s.

Your question is not complete, it seems to be missing the following information;

find the penguin's displacement and velocity when it returned to the fishing spot

The given parameters;

The displacement of the penguin when it returned to the fishing spot is calculated as;

Displacement is the change in position of an object.

Penguin's displacement = 500 m East

The velocity of the penguin is calculated as;

Velocity is the change in displacement per change in time of motion.

\(v = \frac{\Delta \ displacement}{time} \\\\v = \frac{500}{12} \\\\v = 41.67 \ m/s\)

Thus, the displacement of the penguin is 500 m East and the velocity is 41.67 m/s.

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Answer:

False

Explanation:

Electrons

The hare can afford to nap for a maximum time of 6.67 seconds without losing the race if his speed is 15 m/s.

After running for 7 seconds, the hare has covered a distance of:

\(d_h = v_h * t = 15 m/s * 7 s = 105 m\)

The hare is now 895 m away from the starting line and 100 m away from the finish line. The tortoise is 895 m away from the starting line and moving towards the finish line at a speed of 0.27 m/s.

The hare needs to cover a distance of 100 m to reach the finish line, while the tortoise needs to cover a distance of 895 m. If the hare takes a nap for a certain amount of time, the tortoise will continue to move towards the finish line and may eventually cross the finish line before the hare wakes up.

We can calculate the time it would take the tortoise to reach the finish line by dividing the distance by its speed:

\(t_t = d_t / v_t = 895 m / 0.27 m/s = 3314 s\)

The hare needs to wake up and cover the remaining distance to the finish line before the tortoise does. The distance the hare needs to cover is:

\(d_h = 100 m\)

The maximum speed of the hare is 15 m/s, which means the time it would take the hare to cover the distance is:

\(t_h = d_h / v_h = 100 m / 15 m/s = 6.67 s\)

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Answer:

do you have a picture we can see?

Among the given options, the statement that is true is: "Ice is denser than water." Tidewater glaciers are not mentioned in the question stem so we can't choose option C as the correct answer to the question.

Similarly, option B talks about the definition of icebergs, it doesn't really add to the question of which statement is true, hence can be eliminated. Now, talking about option A, it's a common misconception that roughly half of a floating block of ice lies below the surface of the water but in reality, only about one-tenth of the volume of an iceberg is above water. Therefore, option A is false. Now, coming to option C, ice is less dense than water, which is why ice floats on water. In fact, the density of ice is around 917 kg/m³ while the density of water is around 1000 kg/m³. Therefore, option C is false as well. Thus, the correct answer to the given question is: "Ice is denser than water."

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Answer:

The functionality of a body can be restored with the help of appropriate flexibility and strengthening. Once everything is in place, you can exercise those muscles specifically for balance to put them to the test. Your body may then adjust, improving your general stability as you get better at completing those activities.

Answer:

The stability of an object is increased when the lower the centre of gravity is.

So we should try to lower the centre of gravity.

Answer:

a

Explanation:

the river over time will eroded the rock

In this scenario, the 1000-kg car and 2000-kg truck are colliding and the resulting wreckage has a combined mass of 3000 kg, the velocity of the wreckage just after impact is 11.67 m/s.  

The combined velocity of the two vehicles after the collision can be calculated by applying the law of conservation of momentum.

The law of conservation of momentum states that the momentum of a system remains constant if there are no external forces acting upon it.

Momentum (p) is equal to the mass (m) multiplied by velocity (v), so p = mv.

The momentum of the 1000-kg car traveling north at 15 m/s is 15000 kg m/s, and the momentum of the 2000-kg truck traveling east at 10 m/s is 20000 kg m/s.

After the collision, the momentum of the combined wreckage is the sum of the two vehicles' momentums, or 35000 kg m/s.

As the combined mass of the wreckage is 3000 kg, the velocity of the wreckage just after impact is

35000/3000

= 11.67 m/s.

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The potential difference is 0.063 V.

The potential difference is defined as the work done in moving a charge of 1 coulomb from one point to another.

An electron microscope is a microscope that uses an accelerated beam of electrons.

The formula given by De Broglie for the wavelength is as follows:

λ is the wavelength.

λ = h / p

 = h / mv

 = h / √2×m×q×V

where h is planks constant

q is the charge

m is the mass

4.5 * 10⁻⁹  = 6.63 * 10⁻³⁴ / √(2×9.31×10⁻³¹×1.6×10⁻¹⁹×V)

On solving for V we get

V = 0.063 V

Hence, the potential difference is 0.063 V.

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Answer:

the first one

Explanation:

an atoms ability to attract other electrons and form a chemical bond

since other one got deleted :(

Electronegativity is an atom's ability to attract other electrons and form a chemical bond.

The tendency of an atom of a given chemical element to attract shared electrons (or electron density) when forming a chemical bond is known as electronegativity.

The electronegativity of an atom is affected by its atomic number as well as the distance between its valence electrons and the charged nucleus. The higher the associated electronegativity, the more an atom or substituent group attracts electrons.

Electronegativity is a simple way to quantify bond energy as well as the sign and magnitude of a bond's chemical polarity, which characterizes a bond along a continuous scale from covalent to ionic bonding.

Hence, electronegativity is an atom's ability to attract other electrons and form a chemical bond.

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The correct answer is b) never true. When capacitors are connected in series, the equivalent capacitance of the combination decreases. This is because the total charge on the combination is equal to the charge on each individual capacitor, but the voltage across the combination is the sum of the voltages across each capacitor.

The formula for capacitance is C = Q/V, so if the charge is the same but the voltage is higher, the capacitance will be lower.

Therefore, as more and more capacitors are connected in series, the equivalent capacitance of the combination decreases.

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Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

Answer:

I say its true

Explanation:

(a) The magnitude of the tangential acceleration of a point on the edge of the turntable is 0.290 m/s².

(b) The time it takes the turntable to come to rest is 48.3 s.

(c) The number of revolutions the turntable makes before stopping is 4.79 revolutions.

(d) The magnitude of the torque exerted on the turntable is 0.116 Nm.

(e) The magnitude of the frictional force is 0.116 N.

(f) The magnitude of the initial angular momentum of the turntable is 0.056 kg m²/s.

(a) The tangential acceleration can be calculated using the formula a = α × r, where α is the angular acceleration and r is the radius of the turntable. Given α = -0.580 rad/s² and r = 0.20 m (half of the diameter), we find a = 0.290 m/s².

(b) The time it takes for the turntable to come to rest can be determined using the equation vf = vi + at, where vf is the final velocity (zero in this case), vi is the initial velocity (28.0 rad/s), a is the acceleration (-0.580 rad/s²), and t is the time. Rearranging the equation, we have t = (vf - vi) / a = -28.0 rad/s / (-0.580 rad/s²) = 48.3 s.

(c) The number of revolutions the turntable makes before stopping can be found using the equation θ = ωi × t + 0.5 × α × t², where θ is the angle in radians, ωi is the initial angular velocity, t is the time, and α is the angular acceleration. Since ωi = 28.0 rad/s, α = -0.580 rad/s², and t = 48.3 s, we can calculate θ = 4.79 revolutions.

(d) The magnitude of the torque exerted on the turntable can be determined using the equation τ = I × α, where τ is the torque, I is the moment of inertia, and α is the angular acceleration. The moment of inertia for a disk rotating about its axis is given by I = (1/2) × m × r², where m is the mass of the disk and r is its radius. Substituting the given values, we find τ = 0.116 Nm.

(e) The magnitude of the frictional force can be calculated using the equation f = m × a, where f is the force, m is the mass, and a is the acceleration. Substituting the given values, we find f = 0.116 N.

(f) The magnitude of the initial angular momentum of the turntable can be calculated using the equation L = I × ω, where L is the angular momentum, I is the moment of inertia, and ω is the angular velocity. Substituting the given values, we find L = 0.056 kg m²/s.

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The correct option is A, The energy is converted to generating sound and heating the floor, rock, and surrounding air.

Energy refers to the property of an object or system that allows it to do work. Work is defined as the application of a force over a distance, and energy is required to accomplish this. Energy can exist in many forms, such as mechanical, thermal, electromagnetic, chemical, and nuclear.

The two main types of energy are kinetic energy and potential energy. Kinetic energy is the energy that an object possesses due to its motion, while potential energy is the energy that an object possesses due to its position or configuration. Energy is conserved, meaning that it cannot be created or destroyed but can only be transformed from one form to another. This is known as the law of conservation of energy,

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Complete Question;

A rock held above the ground has capacity power. because the rock falls, this capacity energy is transformed into kinetic power. eventually, the rock hits the floor and stays there. what has come about with electricity? organization of solution picks

A). The power is going to generate sound and heat the floor, rock, and surrounding air.

B). it is transformed lower back into a gravitational potential strength.

C). The rock maintains the power inner it in the form of mass energy.

D). The power is going into the ground, and as a result, the orbit of the Earth across the sun is slightly modified.

Yes, the official is correct. Basket interference occurs when a player touches the ball or the net while it is in the cylinder above the basket.

What is interference?
Interference in physics is a phenomenon where two waves combine besides adding their displacements at each and every point in space and time to produce a new wave that has a higher, lower, or identical amplitude. The interaction of waves that are coherent or correlated with one another, either because they originate from the same source or because their frequencies are similar or almost identical, leads to both constructive and destructive interference. All types of waves, including light, radio, acoustic, groundwater waves, gravity waves, and matter waves, can exhibit interference effects.

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Answer: 11

Explanation:

The net external force on Andrea is 264.6 N. The body's acceleration is inversely related to its mass and directly proportional to the net force acting on it.

In contrast to the first law of motion, the second law of motion deals with the behavior of objects for which all external forces are in balance. The more precise second rule of motion is frequently employed to determine what happens when a force is present.

Given, Mass of a sprinter, m = 63.0 kg

Acceleration, a = 4.200 m/s²

Using Newton's second law of motion:

F = ma

Substituting the values of mass and acceleration, we get:

F = 63.0 kg × 4.200 m/s²

F = 264.6 N

Therefore, the net external force on Andrea is 264.6 N.

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Answer:

2500 and kg its is very easy do with method

A book of unknown mass was dropped from 6 m then the speed of the book just before it hits the ground will be equal to 10.84 m/s.

The direction speed of an item in motion, as determined by a specific unit of time & viewed from a certain reference point, is what is referred to as velocity. In kinematics, the area of classical physics that deals with the motion of bodies, speed is a fundamental idea.

A scientific vector quantity called velocity must have both a magnitude and direction in order to be described.

The height from which the book was dropped, s = 6 m

Use the equation of motion,

v² - u² = 2as

The initial speed must be equal to zero.

v² = 2 × (9.8) × (6)

v² = 117.6

v = 10.84 m/s.

Then the speed of the book just before hitting the ground is 10.84 m/s.

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Answer:

Enzymes

Explanation:

Enzymes are biological catalysts, which regulate various chemical reactions in the body.

The biochemical reactions involved in the digestion of food are regulated by enzymes. These biochemical reaction converts food into nutrients that are useful to the body.

For instance, the enzyme amylase catalyses the hydrolysis of starch into sugars.

Answer:

C)constant velocity

Explanation:

it is probably corrected

Answer:

The answer is below

Explanation:

It has been observed that the strength of electromagnets is based on the electrical current passing through their wires.

However, the number of batteries can affect the strength of electromagnets if only the electromagnet's resistance is what's hindering the current.

This can be observed when multiple batteries are connected thereby increasing the degrees of voltage across the electromagnet.

Answer: True? since it has a small hole it would depend on how far away the camera is to the object.

The other pancakes are at various temperatures and Conduction refers to the mode of transfer of thermal energy that arise when the two bodies are in close contact.

The other pancakes are presumably at different temperatures in this scenario. If this is the case, then due to the thermal energy transfer, the pancake with the highest temperature should be the warmest at the bottom. Conduction is the process through which thermal energy is transferred when two bodies are in close proximity to one another.

Thermometers are used to measure the air's temperature. Common thermometers have a glass rod inside of which is a very thin tube. A liquid is delivered to the tube from a reservoir, or "bulb," at the thermometer's base. Sometimes the liquid is reddish alcohol, and other times it is mercury.

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When a nucleus of 235u undergoes fission, it breaks into two smaller, more tightly bound fragments. The binding energy per nucleon for 235-U is 7.6 MeV and 137-Cs is 8.39 MeV.

In experimental physics, nuclear binding energy is the minimal amount of energy needed to separate an atom's nucleus into its component protons and neutrons, also known as nucleons.

The following equation provides the binding energy of a nucleus:

BE = Δmc² in which;

BE = Energy bound

Mass defect = m.

c = the speed of light = 931.49 MeV/u

For 235U:

A = 235

Δm = 1.9150664

BE = 1.9150664 x 931.49 MeV/u.

= BE = 1783.8648 MeV

The formula  of the nucleon's binding energy is BE/A

= BE/A = 235 x 1738.648 MeV

= BE/A = 7.6 MeV

The binding energy for 137-Cs will be:

Mass defect m = 1.23383 unit

= BE=1.123383 u x 31.49 MeV/u = 1149.3003 MeV

Additionally, the binding energy per nucleon, BE/A =

= A = 137

= BE/A = 137 x 1149.3003 MeV

= BE/A = 8.39 MeV

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