Water can’t stick to itself. True or false?

Answer:

Direction remains the same but velocity changes.

Explanation:

This tell us about the direction and magnitude of the acceleration acting on the cannonball throughout its duration of flight that its direction remains the same but its magnitude of the acceleration is continuously changing. The cannonball moves in the direction in which the cannon was fired while the velocity is highest after the fire but decreases when goes higher and when it comes back to the ground so its velocity increases against so we can say that both positive and negative acceleration occurs. Positive acceleration means increase in the magnitude of velocity whereas negative acceleration means decrease in velocity.

The pipe's large and narrow sections have different water pressures of "12.78 KPa."

The ideas of Bernoulli's Theorem and the continuity equation are involved in this query. Finding the pressure difference requires substituting the appropriate values.

Therefore, Bernoulli's theorem states that a drop in fluid pressure is connected with an increase in fluid velocity if the fluid flows horizontally so that there is no change in gravitational potential energy.

Bernoulli's theorem states that as long as an ideal liquid is incompressible, viscous, and flows in a streamline, the total amount of energy it possesses at any given place remains constant. Kinetic, potential, and pressure energy all add up to a constant. P+21pv2+pgh=Constant.

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The minimum energy required is 3.02 x 10²³ joule.

We need to know about relativistic energy to solve this problem. The rest energy of the object can be determined by

Eo = m₀ . c²

where Eo is rest energy, m₀ is rest mass and c is the speed of light (3 x 10⁸ m/s).

The total energy of object can be described as

E = Eo / √(1 - v²/c²)

where E is total energy, v is the object speed.

From the question above, we know that :

m₀ = 2.4 x 10⁶ kg

c = 3 x 10⁸ m/s

v = 0.7c

Find the rest energy

Eo = m₀ . c²

Eo = 2.4 x 10⁶ . (3 x 10⁸)²

Eo = 2.16 x 10²³ joule

Determine the total energy

E = Eo / √(1 - v²/c²)

E = 2.16 x 10²³ / √(1 - (0.7c)²/c²)

E = 2.16 x 10²³ / 0.71

E = 3.02 x 10²³ joule

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Answer:

nun wbu

Explanation:

Answer:

long very very

Answer:

Electricity and magnetism are two related phenomena produced by the electromagnetic force. Together, they form electromagnetism. A moving electric charge generates a magnetic field. A magnetic field induces electric charge movement, producing an electric current.

Explanation:

Answer:

1-physical properties, and chemical properties.

2-The physical properties of matter are those characteristics that can be measured without altering the atomic structure, while the chemical properties of matter are those.

3-For the change of state to occur, the temperature must be constant. The melting point is an intensive physical property of matter; this means that it is not linked to the amount of substance or the size of the body.

The fundamental frequency of the tube is 0.240 m long, by taking air temperature to be [tex]37^o[/tex]C is 367.42 Hz.

A standing wave is basically a superposition of two waves propagating opposite to each other having equal amplitude. This is the propagation in a tube.

The fundamental frequency in the tube is given by

[tex]f=\frac{v_T}{4L}[/tex]

where, [tex]v_T=v\sqrt{\frac{T}{273} }[/tex]

Since, T=37+273 K = 310 K

v = 331 m/s

[tex]\therefore v_T=331\sqrt{\frac{310}{273} } = 352.72 \ m/s[/tex]

Using this, we get:

[tex]f=\frac{352.72}{4(0.240)} \\f=367.42 \ Hz[/tex]

Hence, the fundamental frequency is 367.42 Hz.

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The nucleus of an atom will have a positive charge due to the existence of protons, which are positively charged subatomic particles.

Protons and neutrons are present in an atom's nucleus. We are aware that a proton has a charge of + 1 and a neutron has a charge of 0 (or no charge). As a result, the atom's nucleus will always be positively charged. A nucleus is a name for the dense area in the middle of an atom. Because there are positively charged subatomic particles present, the nucleus usually has a positive charge. The subatomic particles, which are present in atoms but far smaller than atoms, are there. Protons, neutrons, and electrons are the three primary subatomic particles found in matter. An atom's nucleus contains protons and neutrons, while its outermost nucleus contains electrons. Neutrons are subatomic particles with a charge of zero, whereas protons are positively charged.

Therefore, the nucleus of an atom will always have a positive charge. Consequently, an atom's nucleus has a positive charge because of the presence of protons.

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Answer:

Conduction and convection requires Modes of transfer of heat ! Radiation doesn't require any medium !!

In terms of heat transfer, radiation is the emission of thermal energy in the form of infrared waves. ... Since heat is carried by electromagnetic waves, it does not need a physical medium to transfer it. Instead it radiates through space - this is how the Earth is heated by the Sun despite space being a vacuum

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Answer:

From first equation of motion:

[tex]{ \rm{v = u + at}} \\ { \rm{18 = 0 + (a \times 15)}} \\ { \rm{18 = 15a}} \\ \\ { \boxed{ \rm{ \: a = \frac{18}{15} \: m {s}^{ - 2} }}}[/tex]

For the second case:

[tex]{ \rm{v = u + at}} \\ { \rm{v = 0 + ( \frac{18}{15} \times 10)}} \\ \\ { \rm{v = 12 \: {ms}^{ - 1} }}[/tex]

Differentials are the components of a car that transfer engine torque to the axles allowing the wheels on the same axle to turn at different speeds.

There are two differentials in a car. The first one is located on the rare wheels and the second one is located on the front wheels.

The purpose of differentials is to allow the wheels to turn at different speeds required when the car is making a turn. The differentials send the torque from the transmission to the drive wheels.

During the turn, the differentials allow the front and rare wheels to turn at different speeds.

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The number of turns in the solenoid is [tex]4.78\times 10^4 \ turns[/tex].

It is given that superconducting magnet in the form of a solenoid of length 0.500m can generate a magnetic field of 9.00T in its core when its coils carry a current of 75.0A .

Putting above values in equation (1) , we get

[tex]9.00=\frac{4\pi \times10^{-7}\times N \times75.0}{0.500} \\\\N=\frac{9.00\times0.500}{4\pi \times10^{-7}\times75.0} \\\\N=4.78\times10^4 \ turns[/tex]

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Answer:

B) Friction force

Explanation:

if the object is heavy then it will need more force to move it unlike a tennis ball for example.

Answer:

Impairs one's ability to function

Explanation:

Answer:

Impairs one's ability to functionExplanation:

I just took the test

Answer:

185.3m

Explanation:

Given parameters:

Initial velocity  = 10m/s

Final velocity  = 21m/s

Time  = 12s

Unknown:

Total distance traveled by the car = ?

Solution:

To solve this problem, we use that appropriate motion equation:

            v² = u² + 2as

v is the final velocity

u is the initial velocity

a is the acceleration

s is the unknown distance

t is the time taken;

    acceleration = [tex]\frac{v - u}{t}[/tex]

                   a  = [tex]\frac{21 - 10}{12}[/tex]   = 0.92m/s²

 now;

            v² = u² + 2as

            21²  = 10²  + 2(0.92)(s)  

            441 = 100 + 1.84s

           441 - 100  = 1.84s

                  s  = 185.3m

Answer:

Resistance is a measure of the opposite to current flow in an electrical circuit. Resistance is measured in ohms.

Hope this helps

Cosmic Dust.

Why? When stars explode, or die, they releases dust and gas.

To solve this we must be knowing each and every concept related to galaxy. Therefore, cosmic dust of a galaxy consists of tiny particles that look smoky or cloudy and can be found in the space between stars.

Galaxies are collections of stars as well as other celestial objects that are gravitationally bound. The cosmos contains and over 100 billion galaxies, each of which has stunning formations seen in photographs captured by telescopes of the far sky.

According to Samuel, a galaxy's shape is the result of continual interactions between its many components. The majority of the mass is provided by the dark matter, which uses gravity to hold everything together. Cosmic dust of a galaxy consists of tiny particles that look smoky or cloudy and can be found in the space between stars.

Therefore, cosmic dust of a galaxy consists of tiny particles that look smoky or cloudy and can be found in the space between stars.

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Answer:

The answer is positive.

Explanation:

In a middle of an atom, nucleus, contain neutrons (neutral charge) and protons (positive charge) so it will become positively charge nucleus.

The  possible sequence in the life cycle of a massive star is protostar, star, super red giant, planetary nebula, supernova, black hole.

A supernova is the enormous, dazzling explosion of a star. Supernovae or supernovas are the plural forms of its abbreviation, SN or SNe. This brief astronomical event occurs either in the latter stages of the formation of a large star or when a white dwarf is set off into uncontrolled nuclear fusion. The original object, referred to as the progenitor, either falls into a neutron star or a black hole, or entirely disintegrates. Before fading over the course of several weeks or months, the optical luminosity of a supernova can reach a peak that is similar to the luminosity of an entire galaxy. The latest supernova in the Milky Way to be directly observed was Kepler's Supernova in 1604, however more recent supernova remnants have been found.

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Answer:

Explanation:

VR = Velocity ratio = Distance moved by effort/Distance moved by load

Given:

Distance moved by effort = 20m

Distance moved by Load = 5m

VR = 20/5

VR = 4

Hence the velocity ratio of the car is 4

Explanation:

fall at a faster velocity than what it was thrown! Hope this helps!

Answer:

b

Explanation:

the cockroach was rubbing up against something

(c) When the two pulses completely overlap on the string forms a straight line.

A single disturbance that travels via a transmission medium is referred to as a pulse. This medium might be formed of stuff or a vacuum, and it might be endlessly large or finite in size.

Consider two pulses that are identical in shape and proceed in opposite directions along a string, with the exception that one has positive displacements of the string's elements while the other has negative displacements.

On the string, the two pulses blend together completely.

The pulses completely balance one another out in terms of removing string elements from equilibrium, yet the string still moves. Shortly after the string is once again shifted, the pulses will have passed each other.

The correct option is (c)

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Answer:

It is the process in which animals eat each other in the food chain. From producers (like grass) to the top of the food chain (which depends on the climate and habitat)

Explanation:

Explanation:

what is the question? could you pls provide it

Answer:

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 10 m/s²

From the question we have

PE = 250 × 10 × 32

We have the final answer as

Hope this helps you