1)A chocolate bar measures 10 cm long by 2 cm wide and is 2 cm thick

a)Calculate the volume of one bar.

b)How many bars each 2 cm long, 2 cm wide and 2cm thick have the same total volume?

c)A pendulum makes 10 complete oscillations in 8 seconds. Calculate the time period of the pendulum​

The gravitational force exerted by one peach on the other can be calculated using the formula F = G(m1m2)/r²,

where F is the force, G is the gravitational constant (6.67 x 10^-11 Nm²/kg²), m1 and m2 are the masses of the two peaches, and r is the distance between their centers of mass.

(a) When the separation between the peaches is 0.25 m, the force exerted by one peach on the other is:

F = (6.67 x 10⁻¹¹ N×m²/kg²) × (0.16 kg × 0.16 kg) / (0.25 m)² = 1.07 x 10⁻⁹N

(b) When the separation between the peaches is 0.50 m, the force exerted by one peach on the other is:

F = (6.67 x 10^-11 N×m²/kg²) ×(0.16 kg × 0.16 kg) / (0.50 m)²= 2.67 x 10⁻¹⁰ N

Therefore, the gravitational force exerted by one peach on the other decreases as the distance between them increases. This is because the force of gravity is an inverse square law, meaning that the force decreases proportionally to the square of the distance between the objects.

To know more about  inverse square law, visit :

https://brainly.com/question/30562749

#SPJ1

Answer:

0

Explanation:

The linear expansivity of a material is the fractional increase in length for a unit increase in temperature. To calculate linear expansivity for a length of 120m that assumed a new length of 120.0 when heated through a temperature of 100°C, you would use the following formula:

Linear Expansivity = (New Length - Original Length) / (100°C - 0°C)

Therefore, the linear expansivity of the material in this example would be:

Linear Expansivity = (120.0 - 120.0) / (100°C - 0°C)

Linear Expansivity = 0.

Answer:

The linear expansivity of length 120m when heated through a temperature of 100°C can be calculated by using the following equation: ΔL/L × (1 / T) = α, where ΔL is the change in length, L is the original length, T is the temperature and α is the linear expansivity. In this case, ΔL would be 0, as the original and new length are the same. Therefore, the linear expansivity of length 120m when heated through a temperature of 100°C is 0. Here is a Brainly link that can provide you with more information on linear expansivity: https://brainly.com/question/5861312.

Therefore, the work done by the force F=12i-10j on an object as it moves from the origin to the point r=13i+11j is 203.06i + 171.82j.

The formula for calculating the work done by a force F when an object is moved from point A to point B is:

W = F. d

Where, W = work done by the force F, F = magnitude of the force, d = displacement vector of the object from point A to point B

Therefore, the work done by the force F=12i-10j on an object as it moves from the origin (point A) to the point

r=13i+11j (point B) can be calculated as follows:

First, we need to find the displacement vector (d) of the object from point A to point B. This is given as:

r - r0 = 13i + 11j - 0i - 0jr - r0 = 13i + 11j - 0 - 0j (where r0 = 0i + 0j is the position vector of the origin

So, the displacement vector of the object from point A to point B is

d = 13i + 11j.

Next, we need to find the magnitude of the force F, which is given as:

F = 12i - 10j

Magnitude of F = √(12² + (-10)²) = √(144 + 100) = √244 = 15.62 (approximately)

Now, we can use the formula W = F. d

to find the work done by the force

F.W = F. d= (15.62)(13i + 11j) (since F = 12i - 10j)

W = (15.62)(13i) + (15.62)(11j)

W = 203.06i + 171.82j

to know more about force visit:

https://brainly.com/question/30507236

#SPJ11

Answer: Fluorine has seven valence electrons, so it is most likely to gain one electron to form an ion wit a 1- charge.

Explanation:

A fluorine atom can attract one additional electron to fill its outermost shell and achieve a stable electron configuration. This ability to attract electrons is due to fluorine's high electronegativity, which is a result of its small atomic size and high nuclear charge. The strong attraction between fluorine and electrons makes it highly reactive and capable of forming strong chemical bonds with other elements.

Atoms are composed of positively charged protons, negatively charged electrons, and neutral neutrons. The number of electrons in an atom determines its chemical properties, as the electrons are involved in chemical bonding. Some atoms have a tendency to attract additional electrons to fill their outermost electron shell, which can result in the formation of ionic or covalent bonds. Fluorine is one such atom that has a strong tendency to attract additional electrons due to its high electronegativity.

Fluorine is a highly electronegative element, meaning it has a strong tendency to attract electrons towards itself. This is due to its small atomic size and high nuclear charge, which results in a strong electrostatic attraction between the positively charged nucleus and the negatively charged electrons.

Fluorine has seven electrons in its outermost shell, which means it is only one electron short of having a full outer shell. This makes fluorine highly reactive, as it has a strong tendency to attract an additional electron to fill its outer shell and achieve a stable electron configuration. When fluorine attracts an additional electron, it forms a negative ion called fluoride.

The strength of fluorine's electronegativity can be quantified using a scale called the Pauling scale. Fluorine has the highest electronegativity of all the elements on the periodic table, with a Pauling electronegativity value of 4.0. This means that fluorine can attract electrons more strongly than any other element, making it highly reactive and capable of forming strong chemical bonds with other elements.

Here you can learn more about electronegativity

https://brainly.com/question/2060520#

#SPJ11

Answer:

See Explanation

Explanation:

Given

Cyclist 1:

\(Distance = 40km\)

\(Time = 2hr\)

\(Direction = East\)

Cyclist 2:

\(Distance = 10km\)

\(Time = 0.5hr\)

\(Direction = West\)

The question requires options. Since none is given,  I'll answer on a general term.

First, calculate the speed of both cyclists

\(Speed = \frac{Distance}{Time}\)

Cyclist 1:

\(Distance = 40km\)

\(Time = 2hr\)

\(Speed = \frac{40km}{2hr}\)

\(Speed = 20km/hr\)

Cyclist 2:

\(Distance = 10km\)

\(Time = 0.5hr\)

\(Speed = \frac{10km}{0.5hr}\)

\(Speed = 20km/hr\)

The following can be deduced from above:

Answer: Your question is missing below is the question

Question : What is the no-friction needed speed (in m/s ) for these turns?

answer:

20.1 m/s

Explanation:

2.5 mile track

number of turns = 4

length of each turn = 0.25 mile

banked at 9 12'

Determine the no-friction needed speed

First step : calculate the value of R

2πR / 4 =  πR / 2

note : πR / 2 = 0.25 mile

∴ R = ( 0.25 * 2 ) / π

      = 0.159 mile ≈ 256 m

Finally no-friction needed speed

tan θ = v^2 / gR

∴ v^2 = gR * tan θ

 v = √9.81 * 256 * tan(9.2°)  = 20.1 m/s

Answer:

The formula for calculating the length change due to a temperature change is:

ΔL = α * L * ΔT

where α is the linear expansivity, L is the original length of the bar, and ΔT is the change in temperature.

So in this case, the length change of each bar would be:

ΔL = 1.0 x 10^-5 K^-1 * 3m * (40°C - 28°C)

Converting the temperatures to Kelvin (28°C = 28 + 273 = 301 K and 40°C = 40 + 273 = 313 K), we get:

ΔL = 1.0 x 10^-5 K^-1 * 3m * (313 K - 301 K)

ΔL = 1.0 x 10^-5 * 3 * 12

ΔL = 0.00036 m

So each bar will increase in length by approximately 0.00036 meters when the temperature changes from 28°C to 40°C. To allow for this increase in length, a safety gap of 0.00036 meters should be left between each bar.

Answer:

0.45g+0.30g=

0.75grams

Answer:

Following are the responses to the given choices:

Explanation:

The maximum pressure is 10 V from across condenser.

The highest charge mostly on condenser.

\(vc = 10\times 1\ mf\\\\\)

    \(= 10^{-5}\ C\)

The time it takes for the condenser to be 5 V different.

\(time = ln_2 \times 1000 \times 1mf\)

        \(=0 .69 \times 10^{-3}\ sec\)

A common activity like cooking a meal can use many natural Ingredients

Ingredients are substances combined to make a particular mixture such as a meal. most of the ingredients used for the preparation of a meal are sourced naturally.

In cooking different recipes of a meal the use of specific ingredients for each recipe differentiates the recipes.

Therefore we can conclude that cooking a meal requires the use of natural ingredients.

Learn more about cooking ingredients : https://brainly.com/question/1119876

The smallest magnitude of the magnetic field required for the wire to move horizontally to the north is approximately 0.244 T, directed downward.

When a current-carrying wire is placed in a magnetic field, a force is exerted on the wire according to the right-hand rule. In this case, the wire is carrying a current of 1.48 A eastward and moving horizontally to the north. To maintain this motion, there must be a magnetic force acting on the wire in the southward direction to counteract the frictional force.

The magnitude of the magnetic force can be calculated using the formula F = BIL, where F is the force, B is the magnetic field, I is the current, and L is the length of the wire. The length of the wire is not provided in the given information.

To determine the smallest magnitude of the magnetic field, we need to find the value of B that satisfies the equation F = μN, where μ is the coefficient of friction and N is the normal force. The normal force is equal to the weight of the wire, which can be calculated using the formula N = mg, where m is the mass and g is the acceleration due to gravity.

First, we need to convert the wire's mass from grams to kilograms. Given that the wire has a mass of 0.94 g/cm, we can assume that its length cancels out in the calculation of the magnetic field. Therefore, we have m = 0.94 g/cm * L, where L is the length of the wire in cm.

Next, we calculate the weight of the wire: N = mg = 0.94 g/cm * L * 9.8 m/s². The frictional force is given by the equation F = μN = μ * 0.94 g/cm * L * 9.8 m/s². Equating the frictional force and the magnetic force, we have BIL = μ * 0.94 g/cm * L * 9.8 m/s². The length of the wire, L, cancels out, and we can solve for B: B = μ * 0.94 g/cm * 9.8 m/s² / I.

Substituting the given values, with μ = 0.200 and I = 1.48 A, we can calculate the magnitude of the smallest magnetic field: B = 0.200 * 0.94 g/cm * 9.8 m/s² / 1.48 A ≈ 0.244 T.

Therefore, the magnetic field required for the wire is approximately 0.244 T, directed downward.

Know more about Magnetic Field here: https://brainly.com/question/12244454

#SPJ11

The amount of force exerted on the foot by a soccer ball that was kicked with a force of 50 N will be 50 N.

According to Newton's third law of motion, for every action, there is an equal and opposite reaction.

In other words, the force exerted by the soccer ball on your foot is also 50 N, since a force of 50 N was used to kick the ball originally. However, this force will be in the opposite direction to the original force used to kick the ball.

The force you apply when kicking the soccer ball is the action force. As a reaction to this force, the soccer ball exerts an equal and opposite force of 50 N on your foot. So, the soccer ball exerts a force of 50 N on your foot.

More on Newton's third law can be found here: https://brainly.com/question/23772134

#SPJ1

4347.43 wavelength does the star radiate most strongly

The wavelength is the spatial period of a periodic wave in physics—the distance over which the wave's shape repeats.

The distance between identical points (adjacent crests) in adjacent cycles of a waveform signal propagated in space or along a wire is defined as the wavelength.

Wavelength is the distance between the crests of waves or the general attitude of a person. The distance between the crests of two waves is an example of wavelength. When you and another person have the same general attitude and thus can communicate well, this is an example of wavelength.

To know more about  wavelength follow the link:

https://brainly.com/question/10728818

#SPJ4

The magnitude of the output gear angular velocity is 50 rad/sec. The actual value of the angular velocity will depend on the specific values of the gear ratio and the input gear's angular velocity.

The magnitude of the output gear angular velocity is determined by the gear ratio between the input and output gears. The gear ratio is the ratio of the number of teeth on the output gear to the number of teeth on the input gear.
To find the magnitude of the output gear angular velocity in units of rad/sec, you can use the formula:
Output gear angular velocity = Input gear angular velocity * (Number of teeth on input gear / Number of teeth on output gear)
Let's say the input gear has 20 teeth and the output gear has 40 teeth. If the input gear is rotating at 100 rad/sec, we

can calculate the output gear angular velocity as follows:
Output gear angular velocity = 100 rad/sec * (20 / 40) = 50 rad/sec
In this case, the magnitude of the output gear angular velocity is 50 rad/sec.
Remember to check the units and the gear ratio to ensure the correctness of your calculation. Also, note that the actual value of the angular velocity will depend on the specific values of the gear ratio and the input gear's angular velocity.

Learn more about: magnitude

https://brainly.com/question/31022175

#SPJ11

When a ball is at a particular height it possess potential energy which is given as,

The potential energy is converted into kinetic energy of the ball. According to conservation of energy,

which can be further given as,

Substitute the known values,

Thus, the kinetic energy of the ball is 0.140 J.

Answer:

the level on the top

Explanation:

_+$+$

Answer:

Vector quantity

Explanation:

At the bottom of the journey, the passengers will be travelling at a speed of approximately 39.2 m/s.

Acceleration is the rate of change of an object's velocity over time. It is a vector quantity, meaning it has both magnitude and direction. Acceleration is usually denoted by the letter a in equations. It is the second derivative of position with respect to time, or the rate of change of velocity. Acceleration describes how quickly an object's speed changes with time. Acceleration can involve either an increase or decrease in speed, and it can involve either a change in direction or no change in direction.

This is because the velocity of a free falling object is equal to the square root of two times the acceleration of gravity times the height from which the object is dropped.
In this case, the height is 33.5 m, and the acceleration of gravity is 9.8 m/s2.
Therefore, the velocity at the bottom of the journey is equal to the square root of two times 9.8 m/s2 times 33.5 m, which is equal to 39.2 m/s.

To learn more about acceleration
https://brainly.com/question/22048837
#SPJ1

(a) The wavelength of the resonance created is 0.8 m.

(b) The speed of the sound in the fundamental mode is 400 m/s.

(c) The low value of speed of speed of sound in water calculated may be as a result of low temperature of the water poured into the cooking pot.

The wavelength of the resonance created is determined by assuming the cooking pot to be a closed pipe.

Wavelength of fundamental mode of a closed pile = 4L

where;

λ = 4 x 0.2 = 0.8 m

The speed of the sound in the fundamental mode is calculated as follows;

v = fλ

v = 500 x 0.8

v = 400 m/s

Sound wave is directly proportional to temperture, as the temperature of the water increases, the speed of sound increases as well.

The low value of speed of speed of sound in water calculated may be as a result of low temperature of the water poured into the cooking pot.

Learn more about speed of sound here: https://brainly.com/question/2142871

Answer:

Choice A

Explanation:

The lower the point the higher the kinetic energy because Mechanical energy is conserved and the Gravitational Potential Energy gets lower when the height is lower

Given the data from the question, the heat gained by the water, the rate of energy transfer and the initial temperature of the iron are:

A. The energy gained by the water is 37656 J

B. The average rate of energy transfer from

the iron sphere to the water is 125.52 J/s (Watts)

C. The initial temperature of the iron

sphere is 65.4° C

Q = MCΔT

Q = 3000 × 4.184 × 3

Q = 37656 J

Power = energy / time

Power = 37656 / 300

Power = 125.52 J/s (Watts)

Q = CT

37656 = 576 × T

Divide both side by 576

T = 37656 / 576

T = 65.4° C

Learn more about heat transfer:

https://brainly.com/question/10286596

The factor that increases along faults and leads to rock breaking is D. stress.

Stress builds up along faults over time as tectonic plates move and interact with each other. This accumulated stress eventually causes the rocks to break, which results in an earthquake.

earthquake, any sudden shaking of the ground caused by the passage of seismic waves through Earth’s rocks. Seismic waves are produced when some form of energy stored in Earth’s crust is suddenly released, usually when masses of rock straining against one another suddenly fracture and “slip.” Earthquakes occur most often along geologic faults, narrow zones where rock masses move in relation to one another. The major fault lines of the world are located at the fringes of the huge tectonic plates that make up Earth’s crust.

To learn more about earthquake https://brainly.com/question/30668487

#SPJ11

Answer is d. Stress

Answer: 625000 J

Explanation:

KE= (1/2)mv^2

m=500kg

v=50m/s

KE= (1/2 )(500)(50)^2

= 625000 J

We can determine the direction of the magnetic field of the current-carrying wire in the vicinity of the loop using the right-hand rule.

The right-hand rule is a common mnemonic in physics for remembering the direction of magnetic forces. A similar form of the right-hand rule, which is also called the right-hand grip rule, is used to find the direction of the magnetic field in a current-carrying wire.

The direction of the magnetic field made by a current in a wire curls around the wire in a ring. You can find the direction by curling your fingers and pointing your right thumb in the direction of the current in the wire. Your fingers will be curled in the same direction as the direction of the magnetic field around the current-carrying wire.

Learn more about the right-hand rule here: https://brainly.com/question/14434299

#SPJ4

Answer:

C. A scalar quantity

Explanation:

Therefore, the answer is C.

Compared to Venus, Earth's volcanoes produced significantly less carbon dioxide gas. Carbon dioxide was originally abundant on Earth, but it was lost to space during the violent bombardment that occurred early in the history of our solar system.

Everything boils down to water. Although there are large oceans of liquid water on Earth, Venus and Mars' atmospheres are predicted to be dominated by carbon dioxide. Since carbon dioxide is easily dissolved in water, our oceans absorbed a large portion of the atmospheric CO2, leaving an ammonia-dominated environment. Evidently, Venus is close enough to the Sun that the small amount of carbon dioxide in its early atmosphere, which was similar to Earth's, led the surface to warm and release additional carbon dioxide into the atmosphere.

Learn more about atmosphere here-

https://brainly.com/question/28522767

#SPJ4

Ideally, the water bounces off the turbine blades, maximizing electricity era. when water splashes, momentum changes extra than while you are simply status.

Also, if the change in momentum of the water is greater than the alternate in momentum of the blade, the blade will spin faster. Consistent with the laws of movement, the momentum of the center of gravity of an object can most effective be changed by the movement of an external force.

But, because of the frictional force generated while the tires contact the ground, the internal force of the engine is added, allowing the automobile to accelerate.

Hydro turbines convert the strength of flowing water into mechanical energy. A hydroelectric generator converts this mechanical power into energy. A high stress water jet is pressed towards the turbine blades. The route of flow modifications. The ensuing change in momentum exerts a force on the turbine blades, inflicting the turbine to rotate.

Learn more about The momentum here:- https://brainly.com/question/1042017

#SPJ4