What if a solid cylinder of mass M = 2.50 kg, radius R = 2.18 cm, and length L = 2.7 cm, is rolling down from rest instead? With h = 79.60 m and x = 4.64 m, what is the center of mass velocity when the cylinder reaches the bottom?

Please i have asked a.question please help.me

Explanation:

Please i have asked a question in math please help me

Answer:

Hazards during late childhood

Answer:

Which feature is created when a block of rock dropped down in relation to the block of rock beside it?

Explanation:

Grabens drop down relative to adjacent blocks and create valleys. Horsts rise up relative to adjacent down-dropped blocks and become areas of higher topography.

Answer:

920000

Explanation:

Each kg contains 1,000 grams

Answer:

Volume measures liquid

Explanation:

Volume can be measured in meters and centimeters

Satellites don't fall from the sky because they orbit Earth. Actually, Earth's gravity field combined with satellite's momentum is the reason why they don't fall into Earth.

The bowling ball requires more force to roll than the basketball. This is because the bowling ball has more mass than the basketball, and therefore more resistance to motion.

Force is related to mass because the force required to move an object is proportional to its mass. This relationship is described by Newton's second law of motion, which states that the acceleration of an object is directly proportional to the force applied and inversely proportional to its mass. In mathematical form, this relationship is expressed as:

F = ma

The amount of force required to move an object is proportional to its mass and its velocity. Since the bowling ball has more mass, it requires more force to be applied in order to get it moving, and to keep it moving at a constant velocity. Additionally, because the bowling ball is inside a white box, its rolling friction is higher, further increasing the amount of force required to move it.

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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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The impulse the gravity imparts on the stone from the instant it was dropped until it hits the ground is 72.66 Ns

This is defined as the change in momentum of an object.

Impulse = change in momentum

Impulse = final moment – Initial momentum

Impulse = force × time

h = ½gt²

6.02 = ½ × 9.8 × t²

6.02 = 4.9 × t²

Divide both side by 4.9

t² = 6.02 / 4.9

Take the square root of both side

t = √(6.02 / 4.9)

t = 1.1 s

Impulse = Force × time

Impulse = 66.052 × 1.1

Impulse = 72.66 Ns

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The projectile's impulse is equal to the bowling pin's impulse in the negative, which in turn is equal to the projectile's change in momentum in the negative.

Impulse is commonly denoted by the letter J and is equivalent to the change in momentum ( p Delta p p). According to the impulse-momentum theorem, an object will experience an impulse that is equal to the change in its momentum. An object's impulse during a collision is always equal to the change in momentum. If a collision does not cause the system to lose any net kinetic energy, it is referred to as elastic. In elastic collisions, momentum and kinetic energy are both conserved.

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Answer:

The answer is 15. Step by step is you times 80 by 65 and then you divided by 2 and you call your teacher

A photon is a tiny energy packet of electromagnetic radiation, also referred to as a light quantum.

1) Ultraviolet radiation is commonly used in sanitizing hospitals because, viruses, methicillin-resistant Staphylococcus aureus, and vancomycin-resistant enterococci are all susceptible to the germicidal effects of UV-C.

2) According to the photon theory, electrons that have been stimulated return to the ground state to create atomic emission spectra. Light or the photon is the energy that is released when electrons drop to a lower energy level.

3) To characterise the atomic characteristics of light, Albert Einstein used Planck's quantum theory.

Planck's hypothesis is supported by Einstein's demonstration that electromagnetic radiation, such as light, has both wave-like and particle-like properties.

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Answer:

138.6 megacalculations

Explanation:

This is a pretty straightforward one.

All it needs is to convert the degree of measurement.

Dimensions in physics are attributed names, which state the power to which they're are raised. Just as how

Kilo and Mega means the numbers are raised to the power of 3 and 6 respectively. There also exists the ones that indicates how small, such as milli and micro, which are to the powers of -3 & -6.

The question says the IBM computer calculates at an astonishing 136.8 teracalculations.

Tera in physics means it's raised to the power of 12. Thus, the IBM calculates at an astonishing rate of

136.8*10^12 calculations per second.

We're then asked how many calculations it does in 1 micro second. Like I had highlighted earlier, 1 micro second is 1 raised to the power of -6. Or succinctly put,

1 micro second = 1*10^-6.

If the IBM does

138.6*10^12 = 1 second,

Then it does

x = 1*10^-6 second.

When we cross multiply, we have

138.6*10^12 * 1*10^-6, and that is

138.6*10^6 calculations, or say, 138.6 megacalculations.

The IBM does 138.6 megacalculations in 1 micro second, which is still astonishing, by the way

The force that results in the decrease in speed from the midpoint to the end of the track is friction. The friction force slows down the vehicle because it acts in the opposite direction of the car's motion.

The force that would cause the Hot Wheels car to slow down from the midpoint of the track to the end of the track is friction between the car's wheels and the track.

Friction is a force that opposes motion between two surfaces in contact.

In this case, the wheels of the car and the surface of the track are in contact, and the friction force acts in the opposite direction of the car's motion, which slows it down.

As the Hot Wheels car travels down Track #2 during the Speed Lab activity, its initial velocity decreases due to friction.

Friction is a resistance force that opposes motion.

It is caused by the interaction between the surfaces in contact. In this case, the surface of the track and the wheels of the car are in contact.

When the car is moving, there is friction between the two surfaces.

The direction of the friction force is opposite to the direction of motion of the car.

This means that the friction force slows the car down.

In conclusion, the force that results in the decrease in speed from the midpoint to the end of the track is friction.

The friction force slows down the vehicle because it acts in the opposite direction of the car's motion.

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Answer:

1. Y = \(\frac{P*L}{Y}\) = ((1.61 × 10⁸) × 0.47) ÷ 1.8 × 10¹⁰

   Y = 4.20Ε17 mm

2. P = F/A

   F = m×g = 68 ×9.8 = 666.4N

   A = (2 · (0.04)² = 0.0032²

   P = 666.4 ÷ 0.0032 = 208250 Pa

3. Psi = 208250 ÷ 6894.76

   Psi = 30.20 lb/in²

4. Δp = 2 × mass × velocity

   Δp = 2 × 0.005 × 11.7 × sin32 = 0.0620 kgm/s

   Δp = 578 × 0.0620 = 35.83 kgm/s

   F = Δp/Δt = 35.83 ÷ 84

   F = 0.4266N

5. P = F/A = 0.4266 ÷ 0.828

   P = 0.515244 N/m²

**(I'll add the last few later)**

The charger's speed is 76.08 miles/h if the Dodge Charger goes speeding past Berkmar High School at 2:30 PM. If it travels 170 m in 5.0 s.

Distance is a numerical representation of the distance between two items or locations. Distance refers to a physical length or an approximation based on other physics or common usage considerations.

It is given that:

A Dodge Charger goes speeding past Berkmar High School at 2:30 PM. If it travels 170 m in 5.0 s.

As we know,

Speed = distance/time

The unit conversion can be defined as the conversion from one quantity unit to another quantity unit followed by the process of division, and multiplication by a conversion factor.

170 meters =  0.10563 miles

5 seconds = 0.0833 minutes

0.0833 minutes = 1.388×10⁻³ hours

Speed = 0.10563 miles/1.388×10⁻³ hours

Speed = 76.08 miles/h

Thus, the charger's speed is 76.08 miles/h if the Dodge Charger goes speeding past Berkmar High School at 2:30 PM. If it travels 170 m in 5.0 s.

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Answer:

as it 8s based upon to fundamental units distance and Time

Answer:

5.03

Explanation:

trust me

The Length of the rod at the freezing point of water is 9.9625 cm

Length can be defined as the measurement of the distance between two points. The S.I unit of length is meter (m)

To calculate the length of the rod at the freezing point of water, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Solve for L₃

Hence, The Length of the rod at the freezing point of water is 9.9625 cm.

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ANSWER AND EXPLAINATION:
To calculate the impulse imparted on the baseball, we can use the impulse-momentum principle, which states that the impulse experienced by an object is equal to the change in momentum of the object. Mathematically, it can be expressed as:

Impulse = Change in momentum

The momentum of an object is given by the product of its mass and velocity:

Momentum = mass × velocity

In this case, the baseball has an initial mass of 0.14 kg and an initial velocity of 32 m/s. After being struck by the bat, it travels in the opposite direction at a velocity of 49 m/s.

Therefore, the change in momentum is given by:

Change in momentum = (mass × final velocity) - (mass × initial velocity)

Change in momentum = mass × (final velocity - initial velocity)

Change in momentum = 0.14 kg × (49 m/s - (-32 m/s))

Change in momentum = 0.14 kg × (49 m/s + 32 m/s)

Change in momentum = 0.14 kg × 81 m/s

Change in momentum = 11.34 kg·m/s

So, the impulse imparted on the baseball is 11.34 kg·m/s.

Answer:

a) The laser device

b) The tape

Explanation:

First, there is a need to understand what accuracy and precision mean.

Accuracy is the closeness of a measurement to its true (pre-determined) value.

Precision is the closeness of repeated measurements to each other.

Since 1 feet = 12 inches, then, 5 feet and 5.2 inches would be equivalent to 65.2 inches. This value represents the true value of my height.

The tape measured the height as 65 3/8, which is equivalent to 65.375 inches.

The laser device measured the height as 65.31.

Error = true value - measured value

Absolute error from the tape = 65.2 - 65.375

                                       = -0.175 inches

Absolute error from laser device = 65.2 - 65.31

                                 = -0.11

a) The magnitude of error from the tape is more than that of the laser device. Hence, the laser device is said to be more accurate.

b) Even though there were just single readings from both instruments, the tape can be read to the nearest 1/8 of an inch and as such, can give more precisive measurements than the laser device.

Answer:A market economy is a system where the laws of supply and those of demand direct the production of goods and services. 1  Supply includes natural resources, capital, and labor. Demand includes purchases by consumers, businesses, and the government. Businesses sell their wares at the highest price consumers will pay.

Explanation:

When a mass m particle is released onto a smooth inclined plane (where the frictional force F=0), it will glide down the slope.

We resolve in the direction of motion in order to get the particle's sliding acceleration.

F=ma, 

mg cos(90∘−θ)=ma, 

g cos(90∘−θ)=a, 

g sin(θ)=a.

How many Newtons is the net force while the block is travelling at a constant speed?

Zero. Newton's first law of motion states that any object travelling at a constant speed experiences no net external forces, hence the total amount of forces acting on the object must be zero. The mathematical expression for an item being under no net external force is Fnet=0 or F=0.

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Answer:

move in a straight line instead of an orbit

Explanation:

While gravity is the force that maintains the planets' orbit around the sun, inertia states that objects in motion have a tendency to stay in motion. So if there were no gravity then there'd be no force acting on the planets to keep them in orbit, therefore they'd move in a straight line because inertia is still in effect.

The displacement of the object is 2 meters.

To determine the displacement of the object, we need to consider the change in position from the initial position to the final position.

Given:

Initial position = 0 meters

Final position = 2 meters

Calculate the displacement:

Displacement = Final position - Initial position

Displacement = 2 meters - 0 meters

Displacement = 2 meters

Therefore, the displacement of the object is 2 meters.

Explanation:

The position-time graph shows the position of an object over a specific time interval. In this case, the graph shows that the object starts at a position of 0 meters and ends at a position of 2 meters. The displacement of the object is the change in position from the initial point to the final point.

In this context, the displacement of 2 meters indicates that the object has moved 2 meters to the right or in the positive direction from its initial position. The negative and positive signs on the graph indicate the direction of motion, where positive values represent motion in one direction and negative values represent motion in the opposite direction.

The time interval is not directly related to the displacement calculation. It simply represents the duration of the object's motion. To determine the displacement, we only need to consider the initial and final positions, which in this case result in a displacement of 2 meters.

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The observation of the bobs angling inward toward the center of the axis is due to Centripetal force.

Centripetal force refers to the force whose line of action is directed inwards for an object moving in a circular path.

The centripetal force is balanced by an oppositely directed forces called centrifugal force.

Centripetal force is responsible for keeping satellites in their orbit.

Therefore, the observation of the bobs angling inward toward the center of the axis is due to Centripetal force.

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Answer:

123.48J

Explanation:

Given parameters:

Mass of the ball  = 2.8kg

Height  = 4.5m

Unknown:

Potential energy  = ?

Solution:

The potential energy is the energy due to the position of a body. It is mathematically given as;

      P.E   =  mgh

m is the mass

g is the acceleration due to gravity

h is the height

 Now insert the parameters and solve;

          P.E  = 2.8 x 4.5 x 9.8  = 123.48J

Answer:

0

Explanation:

There is 0 PE when its on the ground

Answer:

Archimedes principle states that when a body is partially/wholly/completely immersed in fluid (liquid or gas),it experiences an upthrust which is equal to the weight of the fluid displaced....

Answer:

72 J

Explanation:

Use the Work formula

W= F x d

Given:

F - 48 N

d - 1.5 m

Solution:

W= F x d

W=  48 N x 1.5 m

W= 72 J