HELP WHATS THE ANSWER PLEASE

Answer:

First of all, what is acceleration? — Acceleration is the rate of change of velocity per unit of time.

Now, we know that velocity is a vector quantity i.e we need both magnitude and direction to define it and so is acceleration. We can now say that in acceleration, the direction of motion is very important or to define acceleration we need both the magnitude of motion (here it is the speed) and its direction.

Now coming to your question. There are two possible answers to this question.

more

,Case 2 — When the body is not moving in a straight line or is constantly changing its direction. In this cas the speed still is constant but the direction is constantly changing, for example in the case of a circular motion the direction of motion constantly changes (the direction of a moving body in a circular path at any point is the direction of the tangent of the circle at that point). Hence the velocity changes as the body move along the circular or curved path.

Now, as  I earlier mentioned to define acceleration we need to know it's magnitude and it's direction, and acceleration is the rate of change of velocity per unit of time — the speed remaining constant the direction constantly changing, and the velocity changes at different time intervals or rate of change of velocity is ≠ 0 unlike in case 1. Since there is the of and a change in velocity (speed constant but the direction is changing) there is some acceleration.

To sum everything up — in the case of linear motion i.e motion in a straight line when the speed is constant and direction is not changing, velocity will be zero and hence acceleration would be zero. In case of a non-linear motion i.e motion not in a straight line, in a circle or any path where the speed is constant but the direction is constantly changing, velocity will not be zero and hence the acceleration would not be equal to zero. Either it would be greater or less than zero.

The average speed of the particles in terms of the speed of light is 0.976c. Given that, The particle-X has a lifetime of 256.2.A particle track detector is used to measure the speed of particles. On average, the particles leave 10.6 cm long tracks before they decay into other particles that are not observable by the detector.

The formula to calculate the average speed of the particles is given as;v = d / t Where,v = velocity of the particles, d = distance traveled by the particles, and t = time taken by the particles. The distance traveled by the particles before they decay is 10.6 cm = 0.106 m. The lifetime of the particle is given as 256.2 s. Therefore, time taken by the particle to decay, t = 256.2 s.

The speed of the particles can be calculated as follows; v = d / tv = 0.106 / 256.2v = 4.135 × 10^-4 m/s The speed of the particles in terms of the speed of light can be calculated as follows; Speed of light = 3 × 10^8 m/s Average speed of the particles in terms of the speed of light, v/c= (4.135 × 10^-4) / (3 × 10^8)= 0.976 × 10^-8= 0.976cTherefore, the average speed of the particles in terms of the speed of light is 0.976c.

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4.266 m is the radius of the circular path the electron follows

Electron's speed = 7.50 × 10⁶ m/s

Magnetic field, B = 1 × 10⁻⁵ T

Electron's mass. m = 9.11 × 10⁻³¹

Charge of electron, q = 1.6 × 10⁻¹⁹

We know the relation of radius of curvature, = 4.266 m

Every point on a circle has a curvature that is equal to the reciprocal of the radius; for other curves (and straight lines, which can be thought of as circles of infinite radius), the curvature is equal to the reciprocal of the radius of the circle that at that point most closely approximates the curve.

The curvature's reciprocal, R, is the radius of curvature in differential geometry. It is equal to the radius of the circular arc that, at that moment, most closely resembles the curve for a curve. The radius of curvature for surfaces is the diameter of a circle that, individually or in combination, best fits a normal section.

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Answer:

Explanation:

Here we are given sound moving in air at 43.2 m/s and that has a frequency of 2.11 hz and we need o calculate the Wavelength.

Using formula:

\( \\ \: \: \longrightarrow \: \: \:{ \underline{ \boxed{ \sf Frequency = \dfrac{Wave \: speed}{Wave \: length}}}} \\ \)

Where,

On Substituting the values, we get:

\(\\ \sf \: \: \: \longrightarrow \: \: \: 2.11 = \dfrac{43.2}{Wave \: Length} \\ \\ \\ \sf \: \: \: \longrightarrow \: \: \:Wave\: Length = \frac{43.2}{2.11} \\ \\ \\ \sf \: \: \: \longrightarrow \: \: \:{ \pink{ \underline{Wave \:Length = 20.47 m}} }\\ \\ \)

Hence,

\(\large\boxed{\bold{Formula: λ= \frac{v}{f}}}\)

In this question all the values are given so we'll simply have to substitute the values and solve.

Let's solve!

We'll have to divide the velocity or speed by the frequency.

Substitute the values according to the formula.

\( λ= \frac{43.2}{2.11}\)

Calculator answer:

\(\bold{λ= 20.47393365 \: m}\)

Now, we can round off to the nearest hundredth.

The value in the thousandths place is smaller than 5 so we won't have to round up.

Final answer:

\(\large\boxed{\bold{λ= 20.47 \:m}}\)

Therefore, the wavelength is 20.47 meter.

Answer: Option A

Answer:

D.20 W

Explanation:

P=W/t

P=2000 J / 10 sec

p=200 Watts

Answer:

6,740,663.84 N

Explanation:

Coulombs Law states that \(F = k\frac{q_{1} q_{2}}{r^{2}}\), where k = coulombs law, q1 and q2 are charge one and charge 2 respectively, and r is distance

Substitute for q1 and q2, multiply .05 and .06 together

\(f= k \frac{.003}{r2}\)

Substitute for r, simplify \(2^{2}\)

\(f= k \frac{.003}{4}\)

Divide .003 by 4

\(f=k*.00075\\\)

Substitute in k

\(f=(8.9875517873681764 * 109 N.m2.C-2)*.00075\)

\(force = 6740663.8405261\)

Answer: It reduces the activation energy.

Explanation:

A catalyst is a material that, without being consumed by the process, speeds up a chemical reaction or decreases the temperature or pressure required to initiate one. The addition of a catalyst to a reaction is known as catalysis.

The bonds holding together the atoms in molecules are ruptured, altered, and repaired during a chemical reaction, recombining the atoms to form new molecules. By decreasing the activation energy, the energy hurdle that must be cleared for a chemical reaction to take place, catalysts improve the efficiency of this process. As a result, catalysts facilitate the formation of chemical bonds between atoms to create novel combinations and new compounds. Chemical processes are accelerated and become more energy-efficient when catalysts are used.

The computation of the work done is gotten by multiplying the force and distance whish will be A. 30J.

It should be noted that the formula for calculating work done is given as:

Work = Force × Distance

where,

Force = 15N

Distance = 2m

Therefore, work done will be:

= Force × Distance

= 15N × 2m

= 30 Joules.

In conclusion, the work done is 30 Joules.

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The reason only seven supernovae have been observed by humans in the Milky Way galaxy, despite it being ten billion years old and a supernova going off about every fifty years in a typical galaxy, is because supernovae are relatively rare events and are often obscured by dust and gas in the galaxy.

Additionally, many supernovae occur in areas of the galaxy that are not easily visible to us, such as behind other stars or in the galactic center. Finally, the frequency of supernovae in a galaxy can vary based on factors such as the age and size of the galaxy, as well as its environment and history of star formation. Therefore, while it may seem surprising that only seven supernovae have been seen in our Milky Way galaxy, this is actually consistent with the natural variation and rarity of these explosive events.

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when you’re trying to ollie higher, your front foot will be slightly farther back than it normally is. this lets you drag more on the board, helping you get the height you need. hope this helped :)

Answer: I had the same problem if I was you I would use my phone and record a slowdown of your ollie. Also pop hard and focus on how much  you jump, your ollie is only going to go as high as you jump so try to get some Hight also do moving first it helps in the long run trust if you dont its just as hard as learning how to ollie in the first place.

Explanation: keep riding I hope the best

Answer:

Explanation:

The collision between the 93kg fullback and the 127kg defensive tackle is an example of an inelastic collision. In an inelastic collision, the total kinetic energy of the system is not conserved as some of the energy is transformed into other forms such as heat or sound. The resulting final speed of both players would be 0m/s, indicating that they have come to a stop after the collision.

Answer:

0.833m/s

Explanation:

1hr=60min

=30min

{1×30)÷60=1/2

4.5/1.5=3km/hr

3×5/18=5/6or0.833m/s

Answer:

Decrease

Explanation:

If you were on the Moon, which has significantly less mass than the Earth, your weight would: decrease

The point that seemed to be giving me a complicated time was being able to distinguish the difference and meaning of weight and mass and being able to apply that to a problem. I kept mixing up the definitions. For example in homework 3.1, one question asked:

If you were on the moon, which has significantly less mass than the earth, your mass would:

a. increase

b. decrease

c. stay the same

d. become zero

The definition of mass is the amount of matter in an object. The definition of weight is the amount or unit of force. For me, I just had to remember that when it asked about weight, it wasn’t referring how heavy an object is. After I was able to recognize that when it came to weight, questions became easier.

The final and correct answer was decreasing. The answer is because the Moon’s mass is less. This means the gravitational force is less on your body, therefore, your mass is going to be lighter

The spring's force constant is 9.87 N/m.

In the given question, you are asked to find the spring's force constant.

To find the force constant, you can use the formula for the period of oscillation, T, of a mass-spring system:

T = 2π√(m/k)

where T is the period, m is the mass of the glider, and k is the force constant.

In the question, it is mentioned that the elapsed time from when the glider first moves through the equilibrium point to the second time it moves through that point is 2.00 s. This time is equal to the period of oscillation, T.

Substituting the given values into the formula, we can solve for the force constant:

2.00 s = 2π√(0.500 kg/k)

To find k, we can rearrange the equation:

k = (4π²m) / T²

Plugging in the given values, we get:

k = (4π² * 0.500 kg) / (2.00 s)²

k = 9.87 N/m

So, the spring's force constant is 9.87 N/m.

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Answer:

a system is a set of some things which helps the good happenings in ousr day to day life. It also helps the astrophysisists to find the planets with a system

Answer:

thermal energy

Explanation:

Answer:

-2.5 m/s²

Explanation:

The acceleration of a body is the change in it's velocity with time.

The change in velocity with time can be obtained as the slope of a velocity time graph ;

Acceleration = (change in velocity / change in time)

Taking the slope :

Change in Velocity = △y = y2 - y1

Change in time = △x = x2 - x1

(10, 15) ; (0, 40)

△y / △x = y2 - y1 / x2 - x1 = (40 - 15) / (0 - 10)

△y / △x = 25 / - 10 = - 2.5 m/s²

Given a circular window with a diameter of 2.85 cm, the force can be calculated using the equation F = P * A, where F is the force, P is the pressure, and A is the area of the circular window.

The force exerted by the fluid on the window of an instrument probe is a result of the pressure exerted by the fluid at a certain depth. The pressure exerted by a fluid is given by the equation P = ρ * g * h, where ρ is the density of the fluid, g is the acceleration due to gravity, and h is the depth.

To find the force exerted by only the fluid on the window, we first need to calculate the pressure exerted by the fluid at the given depth. We can use the equation P = ρ * g * h, where ρ is the density of the fluid, g is approximately 9.8 m/s², and h is the depth. The pressure obtained will be in Pascals (Pa).

Next, we calculate the area of the circular window using the given diameter. The area of a circle is given by the equation A = π * (r²), where r is the radius. We divide the diameter by 2 to obtain the radius, and then substitute the value into the equation to find the area.

Finally, we can calculate the force exerted by the fluid on the window using the equation F = P * A. Substituting the values for pressure and area, we can calculate the force in Newtons (N).

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Answer:

A

Explanation:

to simplify let's make it apart the denominator into three part

\( \frac{ {3xy}^{2} }{ {x}^{2} {y}^{2} } - \frac{ {8x}^{2} y}{ {x}^{2} {y}^{2} } + \frac{ {5x}^{2} {y}^{2} }{ {x}^{2} {y}^{2} } \)

now let's simplify

\( \frac{3}{x} - \frac{8}{y} + 5\)

so the answer is A

hope it helps

for any question comment me ❤❤

The concave mirror is a spherical-shaped mirror that has an inner curved surface. Hence, option (4) is correct.

What is a concave mirror?

The concave mirrors are spherical-shaped mirrors that are painted on the outward surface. It is also known as the converging mirror, having the recessed inner reflecting surface.

Thus, we can conclude that the surface of the concave mirror is curved inward. Hence, option (4) is correct.

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Answer:

D. It curves inward

Explanation:

The drift velocity v will give us the answer.

\(v = (5 V) / ((2x10^20 electrons/m³) * (2x10^-6 m²) * (1.6x10^-19 C))\)

To find the drift velocity of charges in the wire, we can use Ohm's Law, which states that the current flowing through a conductor is directly proportional to the applied voltage and inversely proportional to the resistance. The equation for Ohm's Law is:

I = V / R

Where:

I is the current flowing through the wire,

V is the applied voltage (in this case, 5 Volts),

R is the resistance of the wire (given as 10^2 Ohms).

Now, we need to calculate the current flowing through the wire using Ohm's Law. The current is the rate at which charges (electrons) move through the wire. The equation for current is:

I = n * A * v * q

Where:

n is the number of charges per unit volume (given as 2x10^20 electrons),

A is the cross-sectional area of the wire (given as 2 mm² or 2x10^-6 m²),

v is the drift velocity of the charges (what we need to find),

q is the charge of each electron (1.6x10^-19 C).

Rearranging the equation and solving for v, we have:

v = I / (n * A * q)

Substituting the given values:

v = (5 V) / ((2x10^20 electrons/m³) * (2x10^-6 m²) * (1.6x10^-19 C))

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Answer:

9828 coulombs

Explanation:

z = \(\sqrt{3x^2 + 3y^2}\)

Relation between the cartesian and polar coordinates

x = r cos ∅

y = r sin ∅

z = \(\sqrt{3x^2 + 3y^2}\) = \(\sqrt{3r}\)

next we calculate the surface charge density of the cone

б ( r, ∅ ) = xyz^2 = 3r^4 sin∅ cos∅

Charge given as

Q = ∫ б(r,∅ )ds

   = ∫ б(r,∅ ) \(\sqrt{1 +( \frac{dz}{dx})^2 + (\frac{dz}{dx} )^2 } dA\)

after integration

Q  = ∫ б(r,∅ ) 2dA

Attached below is the remaining part of the solution

Answer:

blue

Explanation:

blue is the only color being reflected, meaning it's the only one that will be visible

Answer:

The acceleration of the object decreases I think

Explanation:

Answer:

a

Explanation:

bc i said so its right lol

Light rays first pass through the transparent layer called the cornea and then refracted again as they pass through the transparent lens.

How do light rays flow in the eyes?

The first factor in the journey of light via the eye is the objects being seen and how they produce, reflect, or change the light in various ways.

The visual cortex of the brain's occipital lobe serves as the destination of the light pathway, which starts with photoreceptors in the retina. Rod and cone cells are two different types of photoreceptors. When it comes to eyesight in low light and in peripheral vision, rods can be especially helpful.

The cornea is where most of the refraction occurs as light enters the eye's curved, transparent front surface. The natural or crystalline lens of the eye also distorts light rays. When an item passes in front of the eye, its rays pass through the transparent cornea and enter the eye.

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The mass m of the block on the left is 16 Kg , correct answer.

What is friction?

Friction is a force that prevents two solid objects from rolling or sliding over one another. Although frictional forces, such the traction required to walk without slipping, may be advantageous, they can provide a significant amount of resistance to motion.

Think about how a 100 kilogramme block would move.

beginning speed (Vi) = 0 m/s

a stands for speed.

d=displacement=1 m

Time taken is t = 0.53 seconds.

Using the formula:

d=Vi t+(0.5)a t2

1 = (0) (0.53) + (0.5) a (0.53) (0.53)

2

a = 7.12 m/s2

Acceleration for an at wood machine is expressed as

7.12 = (100 - m) (9.8)/ (100 + m)

m = 15.84 kg

m = 16 kg

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