A 1.0 metre wooden ruler is damaged and no longer uniform. The mass of the ruler is 11.5 G the ruler is balanced on a pivot with a 50 gram mass as shown.

Where is the centre of gravity of the ruler?

A: At the 13cm mark
B: At the 42cm mark
C: At the 60cm mark
D: At the 68cm mark​

Answer: Snowy and rainy

Explanation:

The distance travelled by the athlete given the play lasted for 5.0 seconds is 21.25 m

We'll begin by listing out the parameters given from the question. This is given below:

From the given parameters, we can determine the distance as follow:

s = ut + ½at²

s = (0 × 5) + (½ × 1.7 × 5²)

s = 0 + 21.25

s = 21.25 m

From the above calculation, we conclude that the athlete ran 21.25 m during the 5 seconds play.

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The purpose of this experiment is to understand series and parallel circuits, how to calculate their equivalent resistance, and how to construct the laboratory.

There are two or more paths that current to travel through in a parallel circuit. Each element of the parallel circuit has the same voltage applied to that too. The total current flowing from the source is equal to the sum of a currents through each path.

When one route is blocked, electricity continues to flow thanks to a parallel circuit. Numerous lighting fixtures are a great example. Even if just one light in the fixture fails, led light stays on.

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Answer: acceleration of the train = 7 m/s^2

Explanation: We are going to use the formula for acceleration,

acceleration of a moving body is the change in speed per unit of time, hence the formula for finding acceleration is

a = (v-u)/t
here, a = acceleration
         v = final speed
         u = initial speed
         t = total time taken

here (v-u) will give the change in velocity since it's the difference between the final and initial velocity of the train

Given, v = 17 m/s

           u = 3 m/s

            t = 2 s

∴ a = (17-3)/2
     = 14/2
     = 7 m/s^2

The relative velocity with respect to the dock is 6.5j + 1.1 i m/s m/s.

We need to know about relative velocity to solve this problem. The relative velocity depends on the object and observer velocity. It can be written as

v = vo ± v'

where v is relative velocity, vo is object velocity and v' is observer velocity.

From the question above, we know that

vo = 6.5 j m/s

v' = 1.1 i m/s

The velocity will be added each other because the direction of the observer is different from the object.

v = vo + v'

v = 6.5j + 1.1 i

v = 6.5j + 1.1 i m/s

Thus, the relative velocity is in vector form.

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According to the given statement The total work done on the crate in 17.57 J.

When a force is applied to an item, it is deemed to have "done work" if the object travels a distance in the direction of the force. The result of force and displacement are the same. Displacement times Force equals work.

Mass of the crate, m = 66kg

Force applied by the worker, F = 3.9 N

Angle to the horizontal, θ = 39°,

Distance moved by crate, d=5.8m

Work = Force * Displacement

Total work done on the crate

W = Fcosθ × d

W = 3.9× cos 39 × 5.8

W = 17.57 J

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When the Sun passes through the nodal eclipse zones, the eclipses would last approximately 6 hours, with there being a chance of two solar eclipses every 34.5 days.

Each year, there are two to five solar eclipses, with a total eclipse occurring roughly every 18 months. You might be able to see that eclipse, depending on where you are in the world. The view of the eclipse and the Moon's shadow on Earth move from west to east as the Earth rotates.

This is due to the fact that there are roughly 15 days (or a fortnight) between a full moon and a new moon, and vice versa. There are enough days (30 days) for two more eclipses if one occurs at the start of the season.

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Answer:

????

Explanation:

The average speed for the remainder of the journey is 15km/h.

Average speed of a moving body can be calculated by dividing the distance moved by the object by the time taken to complete the distance as follows;

Average speed = distance/time

According to this question, a car must be driven a distance of 120 km in 2.5 h, however, during the first 1.5 h, the average speed was 70 km/h.

First, the initial distance moved must be calculated as follows:

Distance = 1.5 hours × 70km/h = 105km

The remaining distance = 120km - 105km = 15km

Average speed for this remaining distance = 15km ÷ 1hr = 15km/h.

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Self-confirmation bias is looking for information the support a personal perception while hindsight bias is a past predictions.

An illusory correlation is the type of correlation that is perceived to exist between two variables even when there is actually no relationship existing between them.

There are two types of illusory correlation that includes the following:

Therefore, looking for the information that supports personal perception and the ability to generate past predictions helps in illusory correlation.

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The equipment that are usually involved in the production of electricity are generators.

The most commonly used electricity generation equipment are Turbines. Different types of turbines are used such as:

An electrical generator is used along with the turbine to convert the mechanical energy produced by the turbine into electricity.

Some of the other equipment used to generate electricity are

Therefore, the equipment that are usually involved in the production of electricity are generators.

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Answer:

Non-electric appliances you might already own

Coffee percolator. They make delicious coffee and are convenient for camping trips. ...

French press: This is another coffee maker that is as easy to use as a percolator. ...

Manual mixer. ...

Hand flour mill. ...

Dough maker. ...

Food strainer. ...

Manual food processor. ...

Zeer clay pot fridge.

Explanation:

non-electric equipment are use in the production of a work piece that does not involve the use of electrical equipment

The centripetal force acting on the car is 4500 N

The force that acts on the body to make it follow a circle is known as centripetal Force.

Mass m = 900 kg

speed v = 30 m/s

radius r = diameter/2 =  m

To calculate Centripetal force:

[tex]F_{c}[/tex] = mv^2/r

[tex]F_{c}[/tex] = 900×30^2/180

[tex]F_{c}[/tex] = 4500 N

The centripetal force of the car is 4500 N.

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Make us of equation of motion formulas.

a.) the total time of flight = 8.16 s

b.) the maximum height reached = 81.6 m

c.) the velocity at t = 5s = 9 m/s

Motion of any object under gravity is the vertical motion of the object under the influence of acceleration due to gravity.

Given that a ball is projected with 40 m/s vertically upward.

A. the total time of flight of the ball will be T = 2t

At maximum height, v = 0.

v = u - gt

0 = 40 - 9.8t

9.8t = 40

t = 40 / 9.8

t = 4.08 s

T = 2 × 4.08

T = 8.16 s

B. the maximum height H can be found by using the formula

v² = u² - 2gH

At maximum height, v = 0

0 = u² - 2 × 9.8 × H

40² = 19.6H

H = 1600/19.6

H = 81.6 m

C. the velocity at t = 5s will be v

v = u - gt

v = 40 - 9.8 × 5

v = 40 - 49

v = - 9 m/s

That is, 9 m/s in the opposite direction ( coming downward )

Therefore, the total time of flight of the ball is 8.16 s, the maximum height reached is 81.6 m and the velocity at t = 5s is 9 m/s

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Answer:

give the main question as I can not see the information

The Distance Travels after 5s is 50 m.

First equation of motion: v = u + at.

Second equation of motion: s = ut + 12 at2

Third equation of motion: v2 = u2 + 2as.

A physical system's behavior in terms of how its mobility varies over time is described by equations of motion.

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Answer:

Current doesn't surge or travel like water through the body, instead it is the electrons that move and make current. The signals sent inside our body are also in the form of electric current but meager to what is 20,000v means. In this case, the body couldn't survive and the 'current' formed inside the body met with the resistance of flesh, and as result gave heat burns. But above all the electricity doesn't flow, it's the electrons that move and make current inside the body.

Explanation:

Hope this helps.

The relative velocity is obtained as 5.3 m/s from the calculation as shown below.

We know that motion refers to the change in the position of an object with time. Give that we know that motion is relative and the position of the two objects that are in motion must always be taken into consideration. In this case, we have the situation in which Timmy and his friends are moving backwards and the runway is moving forward thus they are actually moving in opposite directions as seen.

Let us note that velocity is a vector quantity hence we have to assign the forward direction as positive and the backwards direction as negative. Thus we can then take the relative motion between Timmy and his friend and the walk way can be obtained quite conveniently by the use of;

6.9 m/s - 1.6 m/s  = 5.3 m/s

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The weight of a 179 kg of football player is 1755.99N.

Weight is the force on an object due to the gravitational attraction between it and the Earth.

Weight is a function of an object's mass and acceleration due to gravity, hence, can be calculated by multiplying the mass of the object by its acceleration.

According to this question, the mass of a football player is 179 kg is given. The acceleration due to gravity on Earth is 9.81m/s². The weight can be calculated as follows:

Weight = 179kg × 9.81m/s²

Weight = 1755.99N

Therefore, 1755.99N is the weight of the player.

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Explanation:

A moving object always has kinetic energy store

The ratio of friction force to normal force is expressed by the coefficient of friction, a dimensionless number. The platform and button have a friction coefficient of 0.329.

Given that the button's diameter is 0.520 m and its rotational speed is 35.0 rev/min, its distance from the axis is no greater than 0.240 m. This indicates that the button's placement circle's radius R is this.

The calculation for the angular velocity is shown below.

ω=2πf

where f is the revolution's speed.

ω=2*3.14*35/60

ω=3.67 rad/s

The friction coefficient is determined in the manner shown below.

μmg= mω²R

μ=0.329

The friction force between the button and the platform will be equal to the centripetal force acting on the button.

Hence we can conclude that the friction coefficient between the button and the platform is 0.329.

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The total mechanical energy of the spring is 4.275 x 10⁻⁶ J.

The total mechanical energy of the system if no energy is lost from the system is calculated as follows;

U = ¹/₂kx²

where;

The extension of the spring is calculated as follows;

F = kx

x = F/k

x = mg/k

x = (0.006 x 9.8) / 380

x = 0.00015 m

The mechanical energy of the spring is calculated as follows;

U = ¹/₂(380)(0.00015)²

U = 4.275 x 10⁻⁶ J

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The complete question is below:

A student building a game wants to launch a 0.0060kg using a spring. The spring constant is 380N/m. Assume no mechanical energy is lost from the system. find the total mechanical energy of the system

Answer:

B

Explanation:

i hope it hleps

The final velocity of the 2000 kg car with a net force of 500 N being applied to the left for 10 sec is - 2.5 m / s

a = ( v - u ) / t

F = Force

m = Mass

a = Acceleration

v = Final velocity

u = Initial velocity

t = Time

t = 10 s

u = 0

a = ( v - 0 ) / 10

a = v / 10

According to Newton's second law of motion,

F = m a

F = Force

m = Mass

m = 2000 kg

F = - 500 N

- 500 = 2000 * ( v / 10 )

v = - 2.5 m / s ( Negative sign indicate the object is moving towards left )

Therefore, the final velocity of the car is - 2.5 m / s

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In this case, anaerobic metabolism is utilized.

The process of producing ATP anaerobically, also known as without oxygen or in the absence of oxygen, involves the direct phosphate transfer from phosphorylated intermediates like creatine phosphate or glycolytic intermediates to ADP, which in turn produces ATP.

Lactic acid builds up as a result of the anaerobic metabolism of glucose, which causes metabolic acidosis. A base deficit results from the reaction between lactic acid and bicarbonate, which lowers serum bicarbonate levels.

Anaerobic metabolism only produces two ATP molecules for every glucose molecule while aerobic metabolism produces more ATP and depends on oxygen.

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Answer:

The effective mass at the 50 cm mark will be 1.5 kg because the meter stick is uniform and .5 kg can be considered to be acting at 50 cm

3 * (50 - x) = 1.5 * x

Balancing torques where x is the distance from the 50 cm mark

150 - 3 x = 1.5 x

x = 150 / 4.5 = 33.3

x would be at 50 - 33.3 = 16.7

Check:     3 * 16.7 = 1.5 * 33.3

50.1 = 50      within rounding

The final velocity of Krystal who accelerated at 0.36m/s² for the final 15.0 s, having an initial velocity of 11.0m/s is 16.4m/s.

Velocity is simply the speed at which an object moves in a particular direction.

Acceleration is the rate of change of the velocity of a particle or object with respect to time.

From the first equation of motion;

v = u + at

Where v is final velocity, u is initial velocity, a is acceleration and t is time elapsed.

Given the data in the question;

To determine Krystal's final velocity, plug the given values into the equation of motion above and solve for v.

v = u + at

v = 11.0m/s + ( 0.36m/s² × 15.0s )

v = 11.0m/s + ( 0.36ms/s² × 15.0 )

v = 11.0m/s + ( 0.36m/s × 15.0 )

v = 11.0m/s + 5.4m/s

Final velocity v = 16.4m/s

Therefore,  Krystal's final velocity for the final 15.0 seconds is 16.4m/s.

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The average speed and average velocity of the car is 68 km/h and 28 km/h respectively.

The change in position or displacement divided by the time periods during which the displacement occurs is known as average velocity. Based on the direction of the displacement, the average velocity might either be positive or negative. Average speed is the total distance travelled by an object to the total time taken.

The car travels 12 km then 5.0 km north in 0.25 h. The average speed and average velocity is given below.

Average speed = total distance/time

Average speed = (12+5)/0.25 = 68 km/h

Average velocity = displacement/time

Average velocity = (12-5)/0.25 = 28 km/h

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The ball land back on the ground at the distance of 37.75 meters from the point it was kicked after completing the projectile.

What is projectile?

The term "projectile" refers to an item that is pushed by the application of an external force, then moves freely while being influenced by gravity and air resistance. Even though everything that travels through space is a projectile, they are widely used in both sports and conflict (for example, a thrown baseball, kicked football, fired bullet, shot arrow, stone released from catapult)

the ball is kicked at the speed of 15.7 m/s with degree 51.6° angle.

Vertical velocity = 15.7 sin51.6 = 15.7(0.783) = 12.3 m/s

Horizontal velocity = 15.7 cos51.6 = 15.7(0.962) = 15.1 m/s

Lets calculate the time of flight:

v = u + at

Here, v = final vertical velocity, a = gravitational acceleration, u = initial vertical velocity, t = time

putting the values

0 = 12.3 + 9.8(t)

t = -1.25 s

times cant be negative so we consider it as 1.25 seconds

This is half time, IN the compete projectile the ball will reach at the top and then again come to land taking the same time. so,

T = 2t = 2(1.25) = 2.5 seconds

Calculating the range:

Distance = speed(time)

Speed = Horizontal velocity = 15.1 m/s

time = 2.5 s

putting the values

Distance = 15.1(2.5) = 37.75 m

Therefore, the ball land back on the ground at the distance of 37.75 after full projectile.

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