True or False: Some ultraviolet radiation is absorbed by (clouds) in the upper stratosphere.

Answer:

that is true

Explanation:

Answer:

True.

Explanation:

Energy can be given off by heat, a lot of heat can be a sign of a lot of energy. And a shorter wavelength the more energy, which I've learned in school.

Answer: 11

Explanation:

Answer:

Part A:

The other two ways we can rewrite F = m·a are;

1) F = dp/dt

2) F = m × d(v)/dt

Part B:

The mass of the wheelbarrow is 60 kg

Explanation:

Part A:

The other two ways of rewriting the equation are;

1) Force as the rate of change of momentum, F = dp/dt = d(m·v)/dt and

2) From the above equation, where, m is constant, we have;

F = d(m·v)/dt  = m × d(v)/dt

∴ F = m × d(v)/dt

Part B:

The force with which we push the wheelbarrow = 240 N

The acceleration, a, given to the wheelbarrow (by the applied force) = 4 m/s²

From F = m × a

Where;

m = The mass of the wheelbarrow

m = F/a = 240 N/(4 m/s²) = 60 kg

The mass of the wheelbarrow = m = 60 kg.

Answer:

25 m/s²

Explanation:

F = m × a

50 N = 2 kg × a

a = 50 N : 2 kg

a = 25 N/kg

a = 25 m/s²

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When a ball is thrown up in the air, the acceleration of the ball changes throughout its flight. Initially, when the ball is thrown upwards, it experiences a gravitational force pulling it downwards, which causes it to decelerate.

The acceleration of the ball at this point is negative, with a magnitude equal to the acceleration due to gravity (9.81 m/s² near the Earth's surface. As the ball rises higher, the force of gravity acting on it decreases due to the increase in distance from the Earth's center. However, the velocity of the ball is still decreasing, so the ball continues to experience a negative acceleration.

At the highest point of the ball's trajectory (known as the apex), the velocity of the ball becomes zero. At this point, the acceleration of the ball is equal to the acceleration due to gravity, but with a positive sign (since the ball is now moving in the opposite direction to the gravitational force).

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Answer:

10km/h describe its velocity

Explanation:

Velocity =distance /time

It defined as the rate of change of the object's position with respect to a frame of reference and time.

If you travel a distance of 10 Km in 1 hour then 10 km/h is your velocity.

Velocity can be explained as a vector measurement of the direction and rate of motion of an object. The velocity of an object can be specified as the rate of change in the object’s position w.r.t. time.

Velocity can be defined as a vector parameter as it consists of both magnitude and direction. The velocity can be determined from the formula mentioned below:

v = d / t

where v is the velocity, d represents the distance covered, and t is the time.

Although the S.I. unit for the measurement of velocity is m/s or, miles per hour (mph), and kilometers per hour (kph).

Given, the distance traveled, d = 10  km

The time is taken, t = 1 hr

The velocity, v = d/t = 10 km/1 h = 10 km/h

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(a) The free body diagram for representing all the forces acting on an object.

(b) The force Mr. Seifert is applying to the box to move it forward to the RIGHT is 105 N.

A free body diagram is a graphical illustration of all the forces acting on an object.

The force applied by Mr Seifert is calculated by applying Newton's second law of motion as follows;

F - Ff = ma

where;

The given parameters include;

mass of the cardboard = 40 kg

force of friction = 25 N

acceleration of the cardboard = 2 m/s²

The force applied by Mr Seifert is calculated as follows;

F = Ff + ma

F = 25 N  +    (40 kg x 2 m/s²)

F = 105 N

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laws of reflection

I = r

angle of incident = angle of reflection

35 = 35

Answer:Answer:

They are inhaled or eaten

Explanation:

Radioactivity can be defined as the process in which an unstable atomic nucleus spontaneously emits ionizing radiation and charge particles. This eventually results in the formation of an energetically stable atomic nucleus.

Examples of radioactive elements are Uranium, Polonium, Thorium, Radon, etc. The radiation emitted during this process is classified as;

1. Alpha radiation (α).

2. Beta radiation (β).

3. Gamma radiation (G).

Alpha-emitting substances, such as radon gas, can be a serious health hazard only if they are inhaled or eaten. Alpha-emitting substances compared to other radiation has very short-range particle and as such cannot penetrate the human skin or body.

Answer:

B

Explanation:

i worked it out on a diffrent sheet so its hard to explain

The current, according to Ohm's law if, if The voltage between two points in a circuit is 5 V and the resistance between the points is 80 ohms, is 0.063 A so, option B is correct.

Electric currents can be created by the movement of any electric charge carriers, including ions (atoms that have gained or lost one or more electrons), holes, or subatomic charged particles (such electrons with a negative charge or protons with a positive charge) (electron deficiencies that may be thought of as positive particles).

Given:

The voltage between two points in a circuit is 5 V,

If the resistance between the points is 80 ohms,

Calculate the current using Ohm's law as shown below,

Current = The voltage between two points / the resistance between the points

Current = 5 / 80

Current = 0.0625

Current = 0.063 A,

Thus, the current according to Ohm's law is 0.063 A.

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A 13 m-diameter Ferris wheel revolving at a speed of one rotation every two minutes. The rider is moving downwards at a rate of 23.1 m/minute when he is 18 m above ground level.

To solve this problem, we need to use the concepts of circular motion and related rates. Let's first draw a diagram to understand the situation better.

We have a Ferris wheel with a radius of 13 m, and it is rotating at a rate of one revolution every 2 minutes. This means that the time taken for one complete revolution is 2 minutes. We want to find the rate at which a rider is rising when the rider is 18 m above ground level.

Let's assume that the Ferris wheel is initially at the horizontal level, and the rider is at the highest point at this moment. After a time t, the Ferris wheel has rotated through an angle θ, and the rider has moved down to a point where he is 18 m above ground level. Let's call this point P.

We know that the radius of the Ferris wheel is 13 m, and the distance from the center of the Ferris wheel to the point P is (13 - 18) = 5 m. Therefore, we can use the Pythagorean theorem to find the distance between the center of the Ferris wheel and the point P:

sqrt((13)^2 - (5)^2) = sqrt(144) = 12 m

Now, we need to find the angular velocity of the Ferris wheel. We know that the Ferris wheel completes one revolution every 2 minutes, which means that it completes 1/2 revolution in 1 minute. Therefore, the angular velocity of the Ferris wheel is:

ω = (1/2) * 2π radians/minute = π radians/minute

We can now use the formula for related rates to find the rate at which the rider is moving downwards:

dP/dt = -rω sinθ

where dP/dt is the rate at which the rider is moving downwards, r is the distance between the center of the Ferris wheel and the point P (which we have already found to be 12 m), ω is the angular velocity of the Ferris wheel (which we have found to be π radians/minute), and sinθ is the sine of the angle between the radius of the Ferris wheel and the line joining the center of the Ferris wheel to the point P.

To find sinθ, we can use the fact that the point P is on a circle with a radius of 13 m. Therefore, we can use the following equation:

sinθ = opposite/hypotenuse = 5/13

Substituting the values in the formula for related rates, we get:

dP/dt = -12 * π * 5/13 = -23.1 m/minute

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The total energy that can be stored in the spring bumpers is 43.8 J, or KE = 43.8.

The battery's power capacity is the amount of energy it can hold. Its power is commonly stated in Watt-hours (the symbol Wh) (the symbol Wh). A Watt-hour is equal to the voltage (V) and current (Amps) that a battery can produce for a specific period of time (generally in hours). Voltage * Amps * hours = Wh.

Block A's momentum before to the impact can be calculated using the formula p1 = m1v1 = (3.50 kg)(9.00 m/s) = 31.5 kgm/s.

Block B's initial momentum is p2 = m2v2 = 0, indicating that it is at rest.

Prior to the collision, the system's total momentum was equal to 31.5 kgm/p1 + p2.

\(p1 + p2 = (m1 + m2)v\)

\(31.5 kgm/s = (3.50 kg + 10.00 kg) * v\)

\(31.5 kgm/s = 13.50 kg * v\)

\(v = 31.5 kg*m/s / 13.50 kg = 2.33 m/s\)

The kinetic energy of block A before the collision is given by KE1 = (\(1/2)m1v1^2 = (1/2)(3.50 kg)(9.00 m/s)^2 = 141.8\) J

The kinetic energy of block B before the collision is KE2 = \((1/2)m2v2^2 = 0\)

The total kinetic energy before the collision is KE1 + KE2 = 141.8 J

\(ΔKE = KEf - KEi = (1/2)(m1 + m2)v^2 - KE1 - KE2\)

\(ΔKE = (1/2)(3.50 kg + 10.00 kg)(2.33 m/s)^2 - 141.8 J - 0\)

ΔKE = 43.8 J\(31.5 kgm/s = 13.50 kg * v\)

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Answer:

C

Explanation:

Answer:

C

Region B, the corpus callosum, is composed of several lobes while region D, the cerebellum, only has one lobe.

Explanation:

Answer:

3.038 m/s^2

Explanation:

What we have

m = 6.0 kg

\(\mu_{k}\) = 0.20

\(\mu_{s}\) = 0.40

\(F_{applied}\) = 30 N

Since the situation is that the box has already been pushed, lets get the total net force of both components.

∑Fy = \(ma_{y}\) = 0 (bc the normal and weight cancel out each other)

∑Fx = \(F_{applied}\) - \(f_{k}\) = \(ma_{x}\) (We are going to use this equation to find acceleration)

To find the friction force

\(f_{k}\) = \(\mu_{k}\) * N

\(f_{k}\) = .20 * 6.0 kg * 9.81 m/s^2 = 11.772 N

Now we can use ∑Fx equation to actually find the acceleration of the box!

∑Fx = \(F_{applied}\) - \(f_{k}\) = \(ma_{x}\)

Plug it in

30 N - 11.772 N = 6 kg * a

Do the algebra...

a = \(\frac{30 N - 11.772 N}{6 kg}\) = 3.038 m/s^2

If after the collision, the direction of the ball's velocity is reversed, and the bar has both rotational and translational motion, if the collision is elastic, both momentum and kinetic energy is conserved.

According to law of conservation of momentum,

m1 u1 + m2 u2 = m1 v1 + m2 v2

m1 u1 = Initial momentum of object A

m2 u2 = Initial momentum of object B

m1 v1 = Final momentum of object A

m2 v2 = Final momentum of object B

According to law of conservation of energy,

1 / 2 m1 u1² + 1 / 2 m2 u2² = 1 / 2 m1 v1² + 1 / 2 m2 v2²

1 / 2 m1 u1² = Initial kinetic energy of object A

1 / 2 m2 u2² = Initial kinetic energy of object B

1 / 2 m1 v1² = Final kinetic energy of object A

1 / 2 m2 v2² = Final kinetic energy of object B

Therefore, if the collision is elastic, both momentum and kinetic energy is conserved.

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The current flowing through a resistor at a constant temperature is directly proportional to the potential difference across it. This is called Ohm's law

Answer:

Vf = 23 m/s

Explanation:

First we need to find the distance covered by the motorcycle 2 when it passes motorcycle 1. Using the uniform speed equation for motorcycle 1:

s₁ = v₁t₁

where,

s₁ = distance covered by motorcycle 1 = ?

v₁ = speed of motorcycle 1 = 6.5 m/s

t₁ = time = 10 s

Therefore,

s₁ = (6.5 m/s)(10 s)

s₁ = 65 m

Now, for the distance covered by motorcycle 2 at the meeting point. Since, the motorcycle started 50 m ahead of motorcycle 2. Therefore,

s₂ = s₁ + 50 m

s₂ = 65 m + 50 m

s₂ = 115 m

Now, using second equation of motion for motorcycle 2:

s₂ = Vi t + (1/2)at²

where,

Vi = initial velocity of motorcycle 2 = 0 m/s

Therefore,

115 m = (0 m/s)(10 s) + (1/2)(a)(10 s)²

a = 230 m/100 s²

a = 2.3 m/s²

Now, using 1st equation of motion:

Vf = Vi + at

Vf = 0 m/s + (2.3 m/s²)(10 s)

Vf = 23 m/s

Answer:

third law

option 3

Explanation:

because it states "every action has an equal and opposite reaction"

Answer:

a- the answer is 60J

apologies if its wrong

Answer: A) 60

Explanation:

Answer:

48 Newtons

Explanation:

The force of friction between the sled and the snow is 48 newtons.

Given that,

Based on the above information, the calculation is as follows:

\(= 8\times 10x^{-1}N cos(53)\)

= 48 newtons

Therefore we can conclude that the force of friction between the sled and the snow is 48 newtons.

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The kinetic energy of the electron is the difference between its final energy and its potential energy is  -9.312 x \(10^{-19\) J.

\(E_1\) = (h²/8mL²)

where h is Planck's constant, m is the mass of the electron, and L is the width of the well. Substituting the given values, we get:

\(E_1\) = (h²/8mL²) = (6.626 x \(10^{-34\) J s)²/(8 x 9.109 x \(10^{-31\)kg x (4.00 x \(10^{-10\) m)²) = 2.364 x \(10^{-19\) J

The depth of the well is six times this energy, so the potential energy of the electron in the well is:

V = 6\(E_1\) = 6 x 2.364 x \(10^{-19\) J = 1.4184 x \(10^{-18\) J

E = hc/λ

where h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon. Substituting the given values, we get:

E = (6.626 x \(10^{-34\) J s)(2.998 x \(10^8\) m/s)/(79 x \(10^-9\) m) = 2.508 x \(10^{-19\) J

The final energy of the electron is the sum of its initial energy and the energy of the absorbed photon:

\(E_final\) = \(E_1\) + E = 2.364 x \(10^{-19\) J + 2.508 x \(10^{-19\) J = 4.872 x \(10^{-19\)J

The kinetic energy of the electron is the difference between its final energy and its potential energy:

K = \(E_final\) - V = 4.872 x \(10^{-19\) J - 1.4184 x \(10^{-18\) J = -9.312 x \(10^{-19\) J

Kinetic energy is a form of energy that an object possesses due to its motion. Any object that is in motion has kinetic energy, which is dependent on its mass and velocity. The formula for kinetic energy is KE = 1/2 * m * v², where m is the mass of the object and v is its velocity. This formula shows that as the mass or velocity of an object increases, so does its kinetic energy.

Kinetic energy is a scalar quantity, which means it has magnitude but not direction. It is measured in joules (J) in the SI unit system. The concept of kinetic energy is important in many areas of physics, including mechanics and thermodynamics. The practical applications of kinetic energy are numerous, ranging from sports to transportation.

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Answer:

Yes.

Explanation:

Food provides units of energy in the form of calories that give our bodies fuel to perform all functions from the most basic like breathing to more complicated activities. We need a minimum amount of calories from food to sustain basic metabolic functions and more to carry out physical activities. The more active we are, the more food we need.

Answer:

yes

Explanation:

because Our body uses energy for all of its functions and food is the main source of energy. Food contains nutrients that when broken down in the gastrointestinal tract release energy that can be used by the body's cells, tissues and organs for normal function, growth and repair.

Answer:

To calculate the linear expansion of a brass rod due to a temperature change of 100K, we can use the formula:

ΔL = α * L * ΔT

where:

α = linear expansivity of brass (1.8 x 10^-5K^-1)

L = original length of the rod (2m)

ΔT = change in temperature (100K)

Plugging in the values:

ΔL = 1.8 x 10^-5K^-1 * 2m * 100K = 0.036m

So the linear expansion of the brass rod due to a temperature change of 100K is 0.036 meters.

The diagram shows that there has been an increase in the speed of the car as the ramp is raised. But when we check on the 4th ramp, we would see that there was a decrease in the speed after the third bar

Speed can be defined as the rate at which an object covers a certain distance in a given amount of time. It is a measure of how fast an object is moving relative to a reference point. The standard unit of speed in the International System of Units (SI) is meters per second (m/s), although other units such as miles per hour (mph) and kilometers per hour (km/h) are also commonly used.

In physics, speed is a scalar quantity, meaning that it only has magnitude and no direction. However, when speed is combined with a direction, it becomes velocity, which is a vector quantity. It is important to note that the speed of an object can vary depending on its direction, but its average speed over a distance is always positive.

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Answer:

the answer is Jupiter....

Main Asteroid Belt: The majority of known asteroids orbit within the asteroid belt between Mars and Jupiter, generally with not very elongated orbits. The belt is estimated to contain between 1.1 and 1.9 million asteroids larger than 1 kilometer (0.6 miles) in diameter, and millions of smaller ones

Answer:

The answer is Jupiter.

Explanation:

Answer:

ANION is the answer

Answer:

105.6 KJ

Answer

3.7/5

4

hope this will help you friend.

Among the option which is not transverse wave is earthquake because it constitute longitudinal wave.

The orderly, planned transfer of disturbances from one location to another is known as a wave. There are waves in sound, light, and the movement of subatomic particles in addition to the waves that move across the water's surface, which are the most well-known waves. The disturbance oscillates periodically (see periodic motion) with a set frequency and wavelength in the simplest waves. In contrast to electromagnetic waves, which do not require a medium to move and can do so in a vacuum, mechanical waves, like sound, require one (see electromagnetic radiation). The characteristics of a medium determine how a wave travels through it.

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