A bicycle rides in a straight line at 1 km at 10
km/h and then another 1 km at 25 km/h what is the average speed of the bicycle

Answer:

1st: Radiation

2nd: Conduction

3rd: Convection

Explanation:

I actually learned this before in school. Yay

Answer:

any two difference between negative and positive charge

➢The matter is positively charged if it contains more protons than electrons, and it is negatively charged if it contains more electrons than protons.

Explanation:

I hope it will help you.....

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In conclusion, the minimum velocity required for a small block of mass m to slide along a frictionless loop-the-loop track without falling off is given by the equation v ≥ √(gr), where g is the acceleration due to gravity and r is the radius of the loop.

The question describes a scenario where a small block of mass m is sliding along a frictionless loop-the-loop track. The block is released from a certain position on the track.
To analyze the motion of the block, we can consider the forces acting on it. Since the track is frictionless, the only force acting on the block is its weight, which is given by the equation W = mg, where m is the mass of the block and g is the acceleration due to gravity.
As the block moves along the loop-the-loop track, it experiences a change in its velocity and direction. At the highest point of the loop, the block experiences a net inward force towards the center of the loop. This force, called the centripetal force, is responsible for keeping the block moving in a circular path.
In order for the block to maintain contact with the track and not fall off, the centripetal force must be greater than or equal to the weight of the block. This condition can be expressed as:
mv^2/r ≥ mg
Where v is the velocity of the block, and r is the radius of the loop.
From this inequality, we can derive an expression for the minimum velocity required for the block to complete the loop without falling off:
v ≥ √(gr)
This equation gives us the minimum velocity required for the block to successfully navigate the loop-the-loop track.
In conclusion, the minimum velocity required for a small block of mass m to slide along a frictionless loop-the-loop track without falling off is given by the equation v ≥ √(gr), where g is the acceleration due to gravity and r is the radius of the loop.

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Faraday's law states that the induced voltage in a loop of wire depends upon the rate at which the magnetic field through the loop changes.

When the magnetic field through a loop of wire changes, it induces an electric current in the wire. The magnitude of this induced current depends on the rate at which the magnetic field changes, as described by Faraday's law. The faster the magnetic field changes, the greater the induced voltage and current in the wire.

This relationship is the basis for many important technologies, including electric generators, transformers, and induction motors. It is also fundamental to our understanding of electromagnetism and the behavior of electric and magnetic fields.

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Answer:

Yes, the carters are always facing the Earth as the moon orbits.

Explanation:

1. The absolute magnitude of the reduction in variation of Y when time is introduced into the regression model can be calculated by subtracting the variance of Y in the original model from the variance of Y in the new model.

2. The relative reduction can be calculated by dividing the absolute magnitude by the variance of Y in the original model.

3. The latter measure is called the coefficient of determination or R-squared and represents the proportion of variance in Y that can be explained by the regression model.

When time is introduced into a regression model, it can have an impact on the variation of the dependent variable Y. The absolute magnitude of this reduction in variation can be measured by calculating the difference between the variance of Y in the original model and the variance of Y in the new model that includes time. The relative reduction in variation can be calculated by dividing the absolute magnitude of the reduction by the variance of Y in the original model.
The latter measure, which is the ratio of the reduction in variation to the variance of Y in the original model, is called the coefficient of determination or R-squared. This measure represents the proportion of the variance in Y that can be explained by the regression model, including the independent variable time. A higher R-squared value indicates that the regression model is more effective at explaining the variation in Y.

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Answer:

Mass and kinetic energy have a positive relationship, which means that as mass increases, kinetic energy increases, if all other factors are held constant.

In this state, Kinetic energy is equal to half of the product mass and velocity. SI unit is joules. So it's if the mass is doubled then the kinetic energy also gets doubled.

Answer:

∑F = 10.2 N

Explanation:

We have:

Initial velocity: 0.5 m/s

Final velocity: 3 m/s

Time: 1.5 s

We have all of the components needed to calculate acceleration. Let's do that, shall we?

a = vf-vo/t

a = 2.5/1.5

a = 1.7 \(m\)/\(s^{2}\)

Now, look at the Net Force equation:

∑F = ma

Plug in the variables, to get:

∑F = (6)(1.7)

∑F = 10.2 N (You can round this according to significant digits)

0.75 or 75% of the volume of the block is submerged in water.

When an object is placed in a fluid, it experiences an upward buoyant force equal to the weight of the fluid displaced by the object. If the buoyant force is equal to or greater than the weight of the object, it will float.

To find the fraction of the volume of the block submerged in water, we need to compare the weight of the block to the buoyant force it experiences. Since we are given the density of the block, we can find its mass by multiplying the volume by the density. Let's assume that the block has a volume of 1 m^3, then its mass would be:

\(mass = volume x density = 1 m^3 x 750 kg/m^3 = 750 kg\)

Next, we need to calculate the weight of the block:

\(weight = mass x gravity = 750 kg x 9.81 m/s^2 = 7,357.5 N\)

Now, we can calculate the buoyant force experienced by the block. The buoyant force is equal to the weight of the water displaced by the block. Since the block is floating in water, the volume of water displaced is equal to the volume of the submerged portion of the block. Let's assume that the fraction of the volume submerged is x, then the volume of water displaced is also x. The density of water is 1,000 kg/m^3, so the weight of the water displaced is:

\(weight of water = volume of water x density of water x gravity = x m^3 x 1,000 kg/m^3 x 9.81 m/s^2 = 9,810x N\)

Since the buoyant force is equal to the weight of the water displaced, we have:

buoyant force = 9,810x N

Now, we can set the buoyant force equal to the weight of the block and solve for x:

9,810x N = 7,357.5 N

x = 0.75        

Therefore, 0.75 or 75% of the volume of the block is submerged in water.

In conclusion, we can find the fraction of the volume of a block submerged in water by comparing its weight to the buoyant force it experiences, which is equal to the weight of the water displaced by the block. The density of the block, the density of the fluid, and the gravitational acceleration are important factors to consider when calculating the buoyant force and determining whether an object will float or sink in a fluid.

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Your ideal heart rate for vigorous intensity physical activity should be between 77% and 93% of your maximum heart rate. here option A is correct.

You should feel like you can do the activity for a longer period of time while the intensity is still low. You can educate your body to exercise for extended periods of time in this zone, which is all about increasing your endurance. Active Intensity. In general, you won't be able to speak for more than a few words without pausing to take a breath if you're engaging in vigorous-intensity activities. Running, jogging, or race walking. The American Heart Association recommends working at 70 to 85 percent of your maximal heart rate for a vigorous activity. Running is an example of a rigorous workout. at least 10 mph when cycling. carrying a large bag while moving quickly uphill.

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The two complementary forces that keep the sun from blowing itself up are gravity and nuclear fusion.

Gravity is the force that exists between any two masses, any two bodies, any two particles. It is the force that attracts a body towards the center of the Earth, or towards any other physical body with mass.

Nuclear fusion is the process by which two atomic nuclei join together to form a heavier nucleus. This process releases energy, as per the famous equation,

E = mc²,

where E is the energy released, m is the mass that gets converted to energy, and c is the speed of light. The sun and other stars release energy through nuclear fusion.

Gravity is the force that attracts all the particles of matter together in the sun's core. It keeps the nuclear fuel together and squeezes the matter so tightly that the temperature and pressure in the core are sufficient to make nuclear fusion reactions occur.

The energy released during nuclear fusion reactions in the sun's core is what keeps the sun shining and stable. The outward pressure from the energy released in nuclear fusion is balanced by the inward force of gravity. The sun stays in a stable equilibrium state where these two forces are balanced, preventing it from blowing itself apart.

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When the carbon reacts with bromine, electrons are shared between the bromine atoms and the carbon atoms to form a covalent compound. Therefore, option (C) is correct.

In a covalent compound, the formation of a covalent bond involves the mutual sharing of electrons between the two atoms that can hold all biomolecules together.

A covalent bond can be described as a chemical bond formed by sharing of electrons to form electron pairs between atoms. The stable attractive and repulsive forces between atoms are known as covalent bonding.[1] The sharing of electrons permits each atom to get the equivalent of a full valence shell and stable electronic configuration.

The carbon reacts with bromine to form the compound carbon tetrabromide CBr₄.

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Answer:

54 Km per hour..

Explanation:

Multiply the speed value by 3.6

Answer:

Energy implies as the object’s capability to perform work. It is something that cannot be created or destroyed but can only be transformed. An object loses its energy, when it performs work, whereas it gains energy when the work is performed on it. Energy is broadly classified as kinetic energy and potential energy. While kinetic energy is the energy which an object contains because of a particular motion.

On the other hand, potential energy is the stored energy, because of its state of rest. As both the two forms of energy are measured in joules, people get easily confused between these two. So, take a read of the article which will help you to understand the differences between kinetic and potential energy.

Explanation:

Hope this helps - Good luck ^w

Answer:

Energy stored in an object due to its position is Potential Energy. · Energy that a moving object has due to its motion is Kinetic Energy.

Explanation:

Answer:

Explanation:

It is the case of perfectly elastic collision . So we shall apply formula of velocity after collision as follows .

Let  m₁ and m₂ be the mass colliding with velocity u₁ and u₂ and their velocity become v₁ and v₂ after collision .

\(v_1=\frac{(m_1-m_2)u_1 }{m_1+m_2)} +\frac{2 m_2u_2}{(m_1+m_2)}\)

Putting the values

\(v_1=\frac{ (.30-.80).40 }{( .30+.80)} +\frac{2\times .80\times(-.15) }{(.30+.80 )}\)

= - 0.4 m /s

So direction of .30 kg mass will be reversed .

\(v_2=\frac{ ( m_2-m_1) u_2 }{( m_1+m_2)} +\frac{2 m_1u_1}{(m_1+m_2)}\)

putting the values

\(v_2=\frac{ ( .80-.30)(-.15) }{( .30+.80)} +\frac{2 \times.30\times.40}{(.30+.80)}\)

= .15 m /s

The direction of .80 kg will become from left to right ie its direction will be reversed .

b ) Minimum amount of kinetic energy will be at the position when they move with common velocity

common velocity

v = .3 x .4 - .8 x .15 / (.3 + .8)

= 0

c )

Missing energy is stored as elastic potential energy in the spring .

Answer: 1.70 m/s

Explanation:

suvat

s = 0.34m

u = 2.41 m/s

v = ?

a = -4.3 m/s2

t = ?

v^2 = u^2 + 2as

v^2 = 2.41^2 + 2*(-4.3)*0.34

v^2 = 2.8841

v = 1.698 m/s = 1.70 m/s

ANSWER:

C. reflected ray

STEP-BY-STEP EXPLANATION:

The line that divides the angle between the incident ray and the reflected ray into two equal angles is known as the normal line.

Therefore, the angle between the reflected ray and the normal is known as the angle of reflection.

Therefore, the correct answer is C. reflected ray

Answer:

If the wind speed increased, the plane's ground speed would be affected.

Explanation:

The ground speed of a plane is the speed at which it is traveling relative to the ground. Wind speed affects the plane's airspeed, which is the speed at which it is traveling relative to the air. If the wind speed increases, it can either help or hinder the plane's ground speed, depending on whether the wind is a headwind or a tailwind. A headwind can slow down the plane's ground speed, while a tailwind can increase it.

1V voltage is there across a 100 mH inductor if the current is changing at 10.0 mA/s

The voltage across an inductor is given by the equation V = L(di/dt), where V is the voltage, L is the inductance, and (di/dt) is the rate of change of current with respect to time.

In this case, the inductance is 100 mH (millihenries), and the current is changing at a rate of 10.0 mA/s (milliamperes per second). Converting the inductance to henries (H), we get L = 0.1 H.

Plugging these values into the equation, we get:

V = L(di/dt) = (0.1 H)(0.010 A/s) = 0.001 V = 1 mV

Therefore, the voltage across the inductor is 1 mV or 0.001 V.

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The torque on a current loop in a magnetic field is given by the equation τ = NIABsinθ. The torque causes the loop to rotate, aligning itself with the magnetic field.

When a current-carrying loop is placed in a magnetic field, it experiences a torque. The torque is given by the equation:

τ = NIABsinθ

Where:

The torque causes the loop to rotate, aligning itself with the magnetic field. The greater the current, the larger the torque. Similarly, a larger magnetic field or a larger area of the loop will also result in a larger torque. The angle θ determines the direction of the torque, with the maximum torque occurring when the loop is perpendicular to the magnetic field.

This phenomenon is the basis for many applications, such as electric motors and galvanometers.

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Answer:

c and d

what i would do is ask the coach if you could take a minute to stretch and as soon as posible jump into the game

Explanation:

i play soccer lol

Answer: i'm pretty sure its  warm up your muscles before playing

Explanation:

if you don't u get hurt.

The strength of an electromagnet is directly proportional to the amount of current that passes through it. When the amount of current traveling through an electromagnet is increased, the strength of the electromagnetic field will increase.

The correct answer is the electromagnetic field will become stronger.

An electromagnet is a type of magnet in which the magnetic field is generated by an electric current. The magnetic field is produced when an electric current flows through a conductor. The strength of an electromagnet is directly proportional to the amount of current that passes through it, as well as the number of turns in the coil of the magnet wire, and the strength of the core material. Electromagnets are used in a variety of applications, including electric motors, relays, MRI machines, and particle accelerators. By changing the amount of current that passes through the electromagnet, it is possible to control the strength of the magnetic field that it produces. This is an important feature of electromagnets, as it allows them to be used in a wide range of applications.

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Answer:

The answer is can speed an object direction!!!!

The ASC PPS conversion factor is different from the OPPS conversion factor because of the following reason:

The OPPS conversion factor is applied to each APC to determine payment rates for outpatient services. Furthermore, Palliative care is specialized medical care that aims to improve the quality of life for individuals with serious illnesses. It is focused on relieving symptoms and stress associated with serious illnesses. The goal of palliative care is to help patients feel more comfortable and enhance their quality of life. Palliative care is not the same as hospice care because it is given to patients at any stage of an illness, and it may be provided alongside curative treatments.

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Answer:

B.

Explanation:

This is because if it has a long half-life then there will be enough rock left to be able to determine the age of the rock. It is not A. because if it has a long half-life there would be part of the substance left to determine the age. It is not C. because in order to study the substance, there must first be a substance left to study.

Hope this helps!

The total number of Valence electron groups determines the configuration of electron groups around a core atom. The relative placements of the atoms around the core atom determine the shape of the molecular structure.

A molecule is the smallest unit into which a substance may be subdivided and still remain the same thing. It has two or more atoms in it.

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Answer:

D

Explanation: collaboration

Answer:

20

Explanation

f=Kgm/s
2multiply by 10=20

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