A ball is thrown so that its initial vertical and horizontal components of velocity are 30 m/s and 15 m/s, respectively. Estimate the maximum height the ball reaches. (Use 10 m/s2 as the acceleration of gravity.) 101 Incorrect: Your answer is incorrect.

The impact speed of the mouse is 23.3 m/s as per the data given in the question.

Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is travelling along a path. In other words, velocity is a vector, whereas speed is a scalar value.

To solve for the impact speed, we can use the following equation:

\(v^2 = u^2 + 2as\)

Where:

v = impact speed,

u = initial speed (which is the horizontal speed of the owl),

a = acceleration due to gravity (9.8 m/\(s^2\)), and

s = vertical distance fallen (15.0 m).

Substituting the known values, we get:

\(v^2 = 16.0^2 + 2 X 9.8 X 15.0\)

\(v^2\) = 256 + 294

\(v^2\) = 550

v = sqrt(550 )

v = 23.3 m/s

Thus, the impact speed of the mouse is 23.3 m/s.

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Answer:

B. Thermal energy

Explanation:

Answer:

general steps of performing an autopsy:

1. The body is identified and the relevant information about the deceased is collected.

2. A visual examination of the body is performed to look for any abnormalities or signs of injury.

3. The external examination is followed by an internal examination. The body is opened up to examine the organs, including the brain, heart, lungs, liver, and kidneys, for any signs of disease or injury.

4. The organs are weighed, measured and dissected.

5. Tissue samples are taken and sent for laboratory analysis.

6. The cause of death is determined based on the autopsy findings, and a report is generated.

7. The body is then closed and prepared for release to the family for funeral arrangements.

It is important to note that the specific steps involved may vary depending on the type of autopsy being conducted and the circumstances surrounding the death.

Explanation:

The angle  made with the ceiling by the tension force of the two wires is determined as 50⁰.

The angle  made by the two tensions is calculated by applying cosine rule as follows;

the force opposite the angle = weight of the block = mg

W = 7.75 kg x 9.8 m/s²

W = 75.95 N

The angle  made by the two tensions is calculated as follows;

cos θ = (38 N ) / ( 59 N)

cos θ = 0.6441

θ = arc cos (0.6441)

θ = 50⁰

Thus, the angle  made by the two tensions is determined as 50 degrees.

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The figure is in the image attached

The diameter of the column of the water as it hits the bucket is 4.04 cm

The equation of continuity occurs in the fluid system and it asserts that the inflow and the outflow of the volume rate at the inlet and at the outlet of the system are equal.

By using the kinematics equation to determine the speed of the water in the bucket and applying the equation of continuity to estimate the diameter of the column, we have the following;

Using the kinematics equation:

\(\mathbf{v_f ^2 = v_i^2 + 2gh}\)

\(\mathbf{v_f ^2 =(2.0)^2 + 2\times 9.8 \times 7.5}\)

\(\mathbf{v_f ^2 =151 m/s}\)

\(\mathbf{v_f =\sqrt{151 m/s}}\)

\(\mathbf{v_f =12.29 \ m/s}\)  

From the equation of continuity:

\(\mathbf{A_iV_i = A_fV_f}\)

\(\mathbf{\pi r^2_iV_i = \pi r^2_fV_f}\)

\(\mathbf{ r^2_iV_i = r^2_fV_f}\)

\(\mathbf{ (\dfrac{10}{2})^2\times 2.0 = r_f^2 \times 12.29}\)

\(\mathbf{ 50 = 12.29 \times r_f^2}\)

\(\mathbf{ r_f= \sqrt{\dfrac{50}{12.29} }}\)

\(\mathbf{ V_f= 2.02 \ cm }\)

Since diameter = 2r;

∴

The diameter of the column of the water is:

= 2(2.02) cm

= 4.04 cm

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The number of food particles in an hour will be 7200.

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication and division.

Given that the sediment-water interface pumps approximately 5ml of water each minute and filters out of it its nutritious particles. Assuming a concentration of food particles of 40 per cm³,

The number of particles will be calculated below,

Number = ( 40 x 5 ) Per minute

Number o particles = 120 x 60 particles.

Number of particles = 7200 particles

Therefore, the number of food particles in an hour will be 7200.

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Answer:

What is the definition of power.

Explanation:

ability to do or act; capability of doing or accomplishing something.

Answer:

Hey buddy you are in college and I am in 8th standard so, There must be a difference between your level and mine. (:

Explanation:

Power is energy to exert force on objects, machinery use etc.

Sorry if not helpful  ):

The acceleration of the object in the inclined plane is g sinθ.

The velocity of the object on the inclined plane is √(2gL sinθ).

Given that the inclined surface is a frictionless surface. So, the force of friction is zero. Hence the components of the weight of the object provides the necessary forces to slide the object over the inclined plane.

a) Newton's second law is applied to masses on inclination.

Acceleration due to multiplied by the sine of the angle of inclination provides the acceleration for a frictionless slope of angle in degrees.

The acceleration of the object in the inclined plane is,

a = g sinθ

b) Applying the third equation of motion,

v²- u² = 2as

v² = 2as

v² = 2 x g sinθ x L

Therefore, the velocity of the object on the inclined plane is given by,

v = √(2gL sinθ)

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Sound waves are a type of mechanical wave that propagate through a medium, typically air but also other materials such as water or solids.

Frequency: the frequency of a sound wave refers to the number of cycles or vibrations it completes per second and is measured in Hertz (Hz).

Amplitude: the amplitude of a sound wave refers to the maximum displacement or intensity of the wave from its equilibrium position. It represents the loudness or volume of the sound, with larger amplitudes corresponding to louder sounds and smaller amplitudes corresponding to softer sounds.

Wavelength: the wavelength of a sound wave is the distance between two consecutive points in the wave that are in phase, such as from one peak to the next or one trough to the next. It is inversely related to the frequency of the wave.

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Answer:

20 Yards

Explanation:

|---20----|

|            |

| 50       |50

|---D--->|

Start      End

Total displacement(D)  20 yards (East).

Answer:

T' = 2T

Explanation:

The time period of a simple pendulum is given by the relation as follows :

\(T=2\pi \sqrt{\dfrac{l}{g}}\)

l is length of the pendulum

g is acceleration due to gravity

If the length is increased four time, new length is l' = 4l

So,

New time period is :

\(T'=2\pi \sqrt{\dfrac{l'}{g}}\\\\T'=2\pi \sqrt{\dfrac{4l}{g}}\\\\T'=2\times 2\pi \sqrt{\dfrac{l}{g}}\\\\T'=2\times T\)

So, the new time period is 2 times of the initial time period.

Answer:

The orbital velocity \(v = 16.4 \ km/s\)

The period is  \(T = 14.8 \ hours\)

Explanation:

Generally centripetal force acting ring particle is equal to the gravitational  force between the ring particle and the planet , this is mathematically represented as

       \(\frac{GM_s * m }{r^2 } = m w^2 r\)

=>    \(w = \sqrt{ \frac{GM}{r^3} }\)

Here G is the gravitational constant with value  \(G = 6.67*10^{-11}\)

        \(M_s\)  is the mass of with value  \(M_s =5.683*10^{26} \ kg\)

        r is the is distance from the center of the  to the  outer edge of the  A ring

i.e r = R  + D  

Here R  is the radius of the planet   with value  \(R = 60300 \ km\)

         D  is the distance from the  equator to the outer edge of the  A ring with value  \(D = 80000 \ kg\)

So  

       \(r =80000 + 60300\)

=>    \(r =140300 \ km = 1.4*10^{8} \ m\)

So

    =>    \(w = \sqrt{ \frac{ 6.67*10^{-11}* 5.683*10^{26}}{[1.4*10^{8}]^3} }\)

    =>    \(w = 1.175*10^{-4} \ rad/s\)

Generally the orbital velocity is mathematically represented as

       \(v = w * r\)

=>     \(v = 1.175*10^{-4} * 1.4*10^{8}\)

=>     \(v = 1.64*10^{4} \ m /s = 16.4 \ km/s\)

Generally the period is mathematically represented as

     \(T = \frac{2 \pi }{w }\)

=> \(T = \frac{2 * 3.142 }{ 1.175 *10^{-4} }\)

=> \(T = 53473 \ second = 14.8 \ hours\)

Answer:

The orbital velocity \(v = 16.4 \ km/s\)

The period is  \(T = 14.8 \ hours\)

Explanation:

Generally centripetal force acting ring particle is equal to the gravitational  force between the ring particle and the , this is mathematically represented as

       \(\frac{GM_s * m }{r^2 } = m w^2 r\)

The boat must have moved, despite not being seen to move, because its relative position to the dock has changed. This phenomenon is known as relative motion .

Everything is always in motion, but the way we perceive it depends on our frame of reference.

In this scenario, the dock was the frame of reference for the initial position of the boat. When the boat moved to the cove, its position relative to the dock changed, and the dock was no longer an appropriate frame of reference. The boat's motion is now relative to the cove instead.

It is important to note that relative motion depends on the chosen frame of reference. If we were to choose the boat as the frame of reference, then it would be the dock that appears to move, not the boat. This is because motion is always relative to a chosen frame of reference.

In conclusion, the boat must have moved because its position relative to the dock changed. The concept of relative motion reminds us that motion is always relative to a chosen frame of reference, and that the way we perceive motion depends on our chosen frame of reference.

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Answer:

\(\boxed {\boxed {\sf 36 \ meters}}\)

Explanation:

We are asked to find the distance a body covers. We know the initial velocity, acceleration, and time, so we will use the following kinematic equation.

\(d= v_i t+ \frac {1}{2} \ at^2\)

The body starts at rest with an initial velocity of 0 meters per second. The acceleration is 8 meters per second squared. The time is 3.0 seconds.

Substitute the values into the formula.

\(d= (0 \ m/s)(3 \ s) + \frac{1}{2} (8 \ m/s^2)(3 \ s)^2\)

Multiply the first set of parentheses.

\(d= ( 0 \ m/s * 3 \ s) + \frac{1}{2} ( 8 \ m/s^2)(3 \ s)^2\)

\(d=0 \ m + \frac{1}{2} ( 8 \ m/s^2)(3 \ s)^2\)

Solve the exponent.

\(d= 0 \ m + \frac{1}{2}( 8 \ m/s^2)(9 \ s^2)\)

Multiply again.

\(d= 0 \ m + \frac{1}{2} ( 72 \ m)\)

\(d= 36 \ m\)

The body will cover a distance of 36 meters.

Answer:

875 Watts

Explanation:

P = W/t = mgh/t = 700(10)/8 = 875 Watts

Answer:

Why does it take sometimes to be brighter again after eclipse? The moon looks dimmer before lunar eclipse because the moon enters into shadow of penumbra region of earth. As a result, the brightness of moon decreases and looks dimmer.

Explanation:

Answer: The moon looks dimmer before lunar eclipse because the moon enters into shadow of penumbra region of earth. As a result, the brightness of moon decreases and looks dimmer.

Explanation:

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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1) The force acting on the object during the time interval 0-3 seconds is 1/3 N.

2) The force acting on the object during the time interval 6-10 seconds is -0.5 N.

3) There is no time interval in which no force acts on the object.

(i) Force acting on the object in time interval 0-3 seconds. Force acting on the object is equal to the product of its mass and acceleration, i.e.,F = ma.

In the given velocity-time graph, the acceleration of the object can be determined by determining the slope of the velocity-time graph from 0 to 3 seconds.

Slope = (change in velocity) / (change in time)= (20-0) / (3-0) = 20/3 m/s^2

Acceleration, a = slope= 20/3 m/s^2

Mass of the object, m = 50 g = 0.05 kg

∴ Force acting on the object, F = ma= 0.05 × 20/3= 1/3 N.

Therefore, the force acting on the object during the time interval 0-3 seconds is 1/3 N.

(ii) Force acting on the object in time interval 6-10 seconds. Similar to the first question, the force acting on the object in time interval 6-10 seconds can be determined by determining the acceleration of the object during this time interval.

The slope of the velocity-time graph from 6 seconds to 10 seconds can be determined as follows:

Slope = (change in velocity) / (change in time)= (-20-20) / (10-6) = -40/4= -10 m/s^2 (negative sign indicates that the object is decelerating)

Mass of the object, m = 50 g = 0.05 kg

∴ Force acting on the object, F = ma= 0.05 × (-10)= -0.5 N.

Therefore, the force acting on the object during the time interval 6-10 seconds is -0.5 N.

(iii) Time interval in which no force acts on the object. There is no time interval in which no force acts on the object. This is because, as per Newton's first law of motion, an object will continue to remain in a state of rest or uniform motion along a straight line unless acted upon by an external unbalanced force.In other words, if the object is moving with a constant velocity, there must be a force acting on the object to maintain its motion.

Therefore, there is no time interval in which no force acts on the object.

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The correct answer is A. It is subjective

Explanation:

In 1943, the recognized psychologist Abraham Maslow proposed a theory to understand and classify human needs. The work of Maslow included five different categories to classify all basic needs, psychological needs, and self-esteem needs; additionally, in this, Maslow proposed individuals need to satisfy the needs of previous levels to satisfy more complex needs. For example, the first level includes physiological needs such as hunger and these are necessary to get to more complex needs such as the need for safety or self-satisfaction.

This hierarchy is still used all around the world to understand human needs; however, it was been widely criticized because the classification itself is related to Maslow's perspective as this was mainly based on Maslow's ideas about needs, which makes the hierarchy subjective. Also, due to its subjectivity,  the hierarchy may apply only in some individuals or societies.

Answer:

Explanation:

Too much information.

At 60° the cord tension must have a vertical component to support the weight and a horizontal component to provide the required centripetal force

tan60 = (mv²/R) / mg = v²/Rg

tan60 = v² / (Lsin60)g

v² = Lgsin60tan60

v² = 2(9.8)sin60tan60

v² = 29.4

v = 5.42 m/s

The ball MUST be moving at 5.42 m/s for the string to make a 60° angle with the vertical.

Let's see if the string is strong enough to do the task

Vertical force requirement

Fy = mg = 0.400(9.8) = 3.92 N

Horizontal force requirement

Fx = mv²/R = 0.400(29.4)/(2sin60) = 6.7896 N

total tension in the cord

F = √(3.92² + 6.7896²) = 7.84 N

so the cord is strong enough and has a safety factor of 60 / 7.84 = 7.7

But the question is asking what is the highest speed the ball can achieve without breaking.

For this we MUST ignore the 60° limit. The cord will be much closer to 90° from the vertical.

We already know the tension must supply 3.92 N vertically.

So the cord on the verge of breaking is at an angle of

θ = arccos(3.92/60) = 86.25°

and has a centripetal force of

Fx = 60sin86.25 = 59.8715 N

Fx = mv²/R

v² = RFx/m = (Lsinθ)Fx / m

v = √(2sin86.25)(59.8715) / 0.400)

v = 17.28342...

v = 17 m/s

Answer: x=14

Explanation:

there is 90° in a right angle so

(4x)+(2x+6) =90

collect like terms

6x+6=90

 -6 from both sides

6x=84

 ÷6

x=14

The time for which the ball remains in air and finally lands back on the ground will be 1.2 m/s.

Velocity is the directional speed of an object which is in motion as an indication of the rate of change in position of the object as observed from a particular frame of reference and as measured by a particular standard of time.

Vf = Vi + at

where, Vf is the final velocity,

Vi is the initial velocity,

a is the acceleration,

t is the time taken

Since, the object lands back on the ground. The final velocity of the object will be zero.

Vf = 0 m/s

12 = 0 + (-10)t

12 = -10t

t = -12/ 10

t = -1.2 sec

Therefore, the time taken will be 1.2 seconds.

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there is weak attraction between particles when the matter is a LIQUID.

Answer:

They are perpendicular.

Explanation:

Answer:

here is explanation

Explanation:

Proxima Centauri The closest star to our own Is still 40,208,000,000,000 km away.

(OR ABOUT 268,770 AU)

In the winter, an animals fur provides warmth through Conduction.

What is conduction?
One of the three main ways that heat energy moves from one place to another is conduction. The other two ways heat moves are through radiation and convection. Thermal energy is transferred through conduction when nearby atoms or molecules collide. Because the particles in solids and liquids are closer together than they are in gases, conduction occurs more readily. The rate of energy transfer besides conduction is faster when there is a significant temperature difference between the materials in contact. Thermal energy is transferred from a lower kinetic energy area to a higher kinetic energy area. The kinetic energy of slow-moving particles increases when they collide with fast-moving particles. This is a typical instance of heat transfer through physical contact.

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Each of the five friends needs to pay £12 to cover the cost of their own meals and contribute towards the birthday person's meal. Using mean allows us to distribute the cost equally among the friends, ensuring a fair division of expenses for the meal.

To determine how much each of the five friends needs to pay, we can use the concept of averages (mean) and divide the total cost by the number of people paying.

In this scenario, the total cost of the meal for 6 people is £12 per person. Since the other 5 friends have decided to pay for the birthday person's meal, they will collectively cover the cost of their own meals plus the birthday person's meal.

To calculate the total cost covered by the five friends, we can subtract the cost of one person's meal (since the birthday person's meal is being paid by the group) from the total cost. The cost of one person's meal is £12.

Total cost covered by the five friends = Total cost - Cost of one person's meal

= (£12 x 6) - £12

= £72 - £12

= £60

Now, to find out how much each of the five friends needs to pay, we divide the total cost covered by the five friends (£60) by the number of friends (5).

Amount each friend needs to pay = Total cost covered by the five friends / Number of friends

= £60 / 5

= £12

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Answer:

Language -English plz I cant understand