Please help
No spam and links
Track and field champion changed his sport career not once but twice during his young life.
OA. Larry Bird
O B. Dwain Chambers
Oc. Bob Wiley
OD Darren Bornstop​

Since this is a circular motion, we know that the we have a centripetal acceleration; we know that this type of acceleration always points towards the center of the circle. This means that the acceleration is represented by the vectors that point towards the center. Looking at them we notice that at point Z the acceleration is pointing to the right.

Therefore, the object is accelerating to the right at Z

Answer: Noise above 70 dB can cause hearing damage

Explanation:

Answer:

The decibel level that starts to have hearing damage is 120 dB.

Explanation:

Answer:

i guess u could pick "B" :)

Explanation:

Answer:

v = -5 m/s

Explanation:

It is given that,

The initial velocity of the ball, u = 25 m/s

We need to find its velocity after 2 seconds in the air.

Let v is the velocity of the ball after 2 seconds. Using equation of motion to find it.

v = u + at

Here, a = -g

v = u -gt

Putting all the values,

v = 25 - (10)(3)

= 25-30

= -5 m/s

So, the velocity of the ball after 3 seconds is 5 m/s and it is in downward direction.

Answer:

The correct option is;

Raymond: I think the skateboarder has the same total energy at all points on the ramp

Explanation:

The total energy, also known as the total mechanical energy, is the sum of the kinetic and potential energies of the skateboarder

Given that the potential energy is the energy gained due to elevation, the maximum potential energy is obtained at the top of the ramp, while the maximum kinetic energy, which is the energy due to motion, is at the bottom of the ramp where the skateboarder moves fastest.

However, by the energy conservation principle, the kinetic energy of he skateboarder comes from the conversion of the potential energy, such that the total energy is the same at any particular point on the ramp.

Answer:

the answer is equal to the microwave gamma rays visible light x-rays.

Answer:

on Pluto or earth go witH u guts mine is always right hope this helps

If the coil is rotated about its axis which is perpendicular to its plane in counterclockwise direction by a 90° angle, the flux that penetrates the coil (a) increases.

When a circular coil is rotated about its axis which is perpendicular to its plane in counterclockwise direction by a 90° angle, the flux that penetrates the coil changes.

This is because the area of the coil that is perpendicular to the magnetic field increases while the area that is parallel to the magnetic field decreases. Therefore, the flux that penetrates the coil increases.

Find out more on circular coil here: https://brainly.com/question/28941185

#SPJ1

Answer:

the answer is B

Explanation:

edg 2020

Final speed of the combined child, sled, and snowman system is given by:  v_final = (m1 * sqrt(2 * g * H)) / (m1 + m2)

Explanation:

To find the final speed of the combined child, sled, and snowman system, follow these steps:

step1: Calculate the gravitational potential energy (PE) of the child and sled at the top of the hill: PE = m1 * g * H, where   g is the acceleration due to gravity.

step2: Since there is no friction, the potential energy will convert into kinetic energy (KE) at the bottom of the hill: KE = 0.5 * m1 * v1^2, where v1 is the speed of the child and sled at the bottom of the hill.

step3: Equate the potential and kinetic energies: m1 * g * H = 0.5 * m1 * v1^2. Solve for v1: v1 = sqrt(2 * g * H).

step4: Use the conservation of momentum principle for the collision between the sled and the snowman: m1 * v1 = (m1 + m2) * v_final, where v_final is the final speed of the combined system.

step5: Substitute the expression for v1 from step 3 into the momentum equation and solve for v_final: v_final = (m1 * sqrt(2 * g * H)) / (m1 + m2).

Thus, the final speed of the combined child, sled, and snowman system is given by: v_final = (m1 * sqrt(2 * g * H)) / (m1 + m2).

To known more about speed visit:

https://brainly.com/question/30462853

#SPJ11

The correct unit used to measure the electric potential difference is Volts.

Joules is used to measure energy.

Newtons is used to measure forces.

Centimeters is used to measure distance.

Therefore the correct option is the first one.

Answer:

E = 16 J

Explanation:

Given that,

Mass of a book, m = 2 kg

Velocity of the book from the backpack, v = 4 m/s

We need to find the kinetic energy of the book falling out of the backpack. Due to the motion of the object, kinetic energy is possessed by it. It can be given by :

\(E=\dfrac{1}{2}mv^2\\\\=\dfrac{1}{2}\times 2\ kg\times (4\ m/s)^2\\\\=16\ J\)

So, the kinetic energy of the book is 16 J.

Answer:

162 should be the answer because 18x3x3=162.

For the diffraction grating, the slits spacing should be comparable to the wavelength of length incident on the grating to observe the phenomenon of diffraction.

The wavelength of light considered for the for diffraction ranges from,

By simplifying the given value in meters,

As the value of 1000 nm fall in this range and thus, considered as most reasonable slit spacing.

Hence, option 2 (1000 nm) is the correct answer.

The correct answer for how the albedo of polar regions affect insolation is: Low temperatures are maintained because of the high amount of reflection.

The albedo of a surface refers to its ability to reflect sunlight. Higher albedo means more sunlight is reflected, while lower albedo means more sunlight is absorbed. Polar regions, such as the Arctic and Antarctic, have high albedo due to the presence of ice and snow, which reflect a significant portion of incoming sunlight.

When sunlight hits the polar regions with high albedo, a large portion of it is reflected back into space rather than being absorbed by the surface. As a result, less solar energy is available to heat the surface, leading to lower temperatures in these regions.

Therefore, low temperatures are maintained in polar regions because of the high amount of reflection caused by their high albedo.

Learn more about insolation at: https://brainly.com/question/28716552

#SPJ11

A) the direction of the magnetic field is directed to the west

B) the magnitude of the magnetic field is around 1.67 × 10⁻⁵T.

A) The direction of the magnetic field can be found using the right-hand rule. Since the electron is moving northward and experiences an upward force, the magnetic field must be directed to the west.

B) To find the magnitude of the magnetic field, we can use the formula for the magnetic force on a moving charge:

F = qvBsinθ

where F is the force, q is the charge, v is the velocity, B is the magnetic field strength, and θ is the angle between the velocity and the magnetic field.

For an electron, q = -1.6 × 10⁻¹⁹

C. Since the force is perpendicular to the velocity, θ = 90° and sinθ = 1

Now, we can rearrange the formula to solve for B:

B = F / (qv) B = (8.0 × 10⁻¹³ N) / [(-1.6 × 10⁻¹⁹ C)(3.1 × 10⁶ m/s)] B ≈ 1.67 × 10⁻⁵ T

So, the magnitude of the magnetic field is approximately 1.67 × 10⁻⁵ T.

Learn more about magnetic field at

https://brainly.com/question/31969907

#SPJ11

Answer:

Traveled = 6 steps     displacement = 0    

Explanation:

see attached 'sketch'

Answer: A. Digital images can be easily removed from a storage device or lost

Explanation:

I solved it in study island ( sometimes you need to have trust)

Answer:The difference between air temperature and dew point is less than 4.5 degrees Fahrenheit when fog can form.

Explanation:This can occur because of added moisture or falling air temperatures. The difference between air temperature and dew point is less than 4.5 degrees Fahrenheit when fog forms.

Answer:

heyyyyyyy

Explanation:

The required speed of the water as it exits the hole is most nearly 17.9m/s. Given that a tank with a diameter of 10m is open at the top and contains water that is 12m deep. There is a hole 1.0m from the bottom of the tank with a diameter of 0.02m. We have to determine the speed of the water as it exits the hole.

Step 1: Calculate the volume of the water in the tank. We know, the volume of the water in the tank=πr²h, where r is the radius of the tank and h is the height of the tank. r = d/2 = 10/2 = 5m

Volume of the water in the tank= π(5)²(12)= 942m³

Step 2: Calculate the volume of the water below the hole.  We know the volume of the water below the hole= πr²h, where r is the radius of the tank and h is the height of the water below the hole.r = d/2 = 0.02/2 = 0.01m

Volume of the water below the hole= π(0.01)²(11)= 0.0038m³

Step 3: Calculate the time taken for the water to exit from the hole using Torricelli's Theorem.The formula of Torricelli's Theorem is given asv = √(2gh), where g = 9.8 m/s² and h = 11m

Now, time, t = √(2h/g) = √(2 × 11/9.8) = 1.47s

Step 4: Calculate the speed of water as it exits the hole. We know,Volume of water that exits the hole = area of the hole × speed × timev = Q/A × twhere A is the area of the hole and Q is the volume of the water that exits the hole, A = πr² = π(0.01)² = 0.000314m²

Q = volume of water below the hole = 0.0038m³⇒v = Q/A × tv = 0.0038/0.000314 × 1.47v = 17.9m/s. Therefore, the speed of the water as it exits the hole is most nearly 17.9m/s.

Learn more about Torricelli's Theorem: https://brainly.com/question/13258304

#SPJ11

Answer: 1 degree

Explanation:  I looked it up.

Answer:

Protista

Explanation:

Taxonomy can be defined as the process of naming, classification and description of living organisms such as plants and animals. Thus, the biological classification of living organisms based on similarities or characteristics such as eyes, number of legs, etc., is generally referred to as taxonomy.

Basically, taxonomy helps scientist to have a good understanding and knowledge when studying various organisms.

Furthermore, the eight (8) biological classification (taxonomy) used for grouping and organizing organisms are; kingdom, domain, phylum, family, order, class, species and genus.

An organism that has only one cell, big and has a nucleus is most likely a member of Protista. Thus, a Protista such as euglena, paramecium, amoeba, etc., have a nucleus and are unicellular.

A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.

The S.I. unit of E is NC^-1 and that of B is NA^-1 m^-1, then unit of E/B is A m/C (ampere meter per coulomb). This unit represents the ratio between the electric field and the magnetic field, indicating the strength and direction of the electromagnetic field.

The SI unit of electric field (E) is NC^(-1) (newton per coulomb) and the SI unit of magnetic field (B) is NA^(-1) m^(-1) (tesla). To determine the unit of E/B, we need to divide the unit of E by the unit of B.

Dividing the unit of E (NC^(-1)) by the unit of B (NA^(-1) m^(-1)), we can simplify the expression:

E/B = (NC^(-1))/(NA^(-1) m^(-1))

To simplify this expression, we can cancel out the common units in the numerator and denominator:

E/B = (N/C)/(N/(A m))

Now, let's simplify further by dividing the numerator and denominator:

E/B = (N/C) * (A m/N)

Canceling out the common units:

E/B = (A m)/(C)

Therefore, the unit of E/B is A m/C (ampere meter per coulomb).

For more such questions on SI unit, click on:

https://brainly.com/question/16393390

#SPJ8

The heating curve could be describing processes such as boiling and endothermic reactions.A heating curve is a graphical representation that shows the changes in temperature as a substance is heated.

It typically consists of two distinct segments: heating and phase change. Boiling is a process where a substance changes from its liquid phase to its gaseous phase. During the heating phase, the temperature of the substance gradually increases until it reaches its boiling point. At this point, the substance undergoes a phase change, and the temperature remains constant until all the liquid has vaporized. Therefore, the heating curve could be describing the process of boiling.

Endothermic reactions are chemical reactions that absorb heat from their surroundings, resulting in a decrease in temperature. If the heating curve represents the temperature changes during an endothermic reaction, we would observe a decrease or plateau in temperature during the reaction, followed by a subsequent increase. Thus, the heating curve could also be describing an endothermic reaction.

Condensation, on the other hand, is the process by which a substance changes from its gaseous phase to its liquid phase. It typically occurs when a gas is cooled down, and the temperature decreases. However, the heating curve represents temperature changes during the heating process, not cooling. Therefore, condensation is not applicable to the heating curve.

Learn more about heating curves here:

https://brainly.com/question/29592874

#SPJ11

The required speed at which chameleon's tongue grabs the insect is calculated to be 3.96 m/s.

Acceleration of chameleon's tongue is given as 33 m/s².

Time is given as 0.12 s.

We know that, the rate of change of velocity is acceleration.

Mathematically, a = (v - u)/t

where,

v is velocity

t is time

a is acceleration

Putting the values in the equation,

a = (v - u)/t

Making v as subject,

v = a t = 33 × 0.12 = 3.96 m/s

Thus, the speed at which chameleon's tongue grabs the insect is calculated to be 3.96 m/s.

To know more about chameleon:

https://brainly.com/question/30534993

#SPJ4

The wavelength in meters for an X-ray photon with an energy of 64.5 keV is approximately 1.91 x 10^-11 meters.

To determine the wavelength in meters for an X-ray photon with an energy of 64.5 keV, we can use the equation:

E = hc/λ

where E is the energy of the photon, h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon.

First, we need to convert the energy from keV to joules:

1 keV = 1.602 x 10^-16 J
64.5 keV = 64.5 x 1.602 x 10^-16 J = 1.034 x 10^-14 J

Now we can rearrange the equation to solve for λ:

λ = hc/E

λ = (6.626 x 10^-34 J s) x (3.00 x 10^8 m/s) / (1.034 x 10^-14 J)
λ = 1.91 x 10^-11 meters

Therefore, the wavelength in meters for an X-ray photon with an energy of 64.5 keV is approximately 1.91 x 10^-11 meters.

To know more about energy refer https://brainly.com/question/15946945

#SPJ11

Explanation:

I think the total resistance of the resistors is 1 ohm . it is also known as equivalent resistance.

hope it helps.