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Answer:

Yes, because everything bounce off in every surface around any object.

Explanation:

Answer:

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Answer:

c is correct option because moon will go away when we come closer to earth and it will cut in round shape...

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Answer:

C.

Explanation:

Because when we closer, it is rounder

Answer:

a1

b2

d3

c5

d4

Explanation:

Hope this helps

Check if right by the way

Answer:

a1

b2

d3

c5

d4

Explanation:

Answer:

2 miles

Explanation:

Jimmy walked forward 3 miles east (to the right)

Then, he backtracked and walked 1 mile west (to the left)

This can be written as:

3 - 1 = ?

3 - 1 = 2

Therefore, Jimmy traveled a total of 2 miles.

Answer:

yes

Explanation:

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Answer:

The wave front expanding out from an explosion is possibly the most dynamic example of a compressional wave. And a pulse of compressed air can transfer a LOT of energy. ... For a literal "compression wave" visualize accelerating a boat across the water, compressing the water it encounters into a "bow wave".

Sound is an illustration of a compressional wave. Mechanical waves like sound waves need a medium to travel through, such air, water, or solids.

A sound wave undergoes compressions and rarefactions as it passes through a medium.

Particles in the medium move parallel to the wave's propagation direction during a compressional wave.

When particles are close to one another, compression regions arise in the case of sound waves, creating high-pressure zones.

Following these compressed zones are rarefactions, when the particles are dispersed and low-pressure areas develop.

Thus, sound is an example of a compressional wave.

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Answer:

Baseball

Explanation:

Baseball because the ball can come at you at high speeds and you need to react quickly.

Answer: 3

57m north east

Explanation:

Given that the boat sails 40. meters north and then sails 40. meters due east. The new position will be known by using pythagorean theorem.

P^2 = 40^2 + 40^2

P^2 = 1600 + 1600

P^2 = 3200

P = square root (3200)

P = 56.6 m

P = 57 m (approximately )

Therefore, the new position of the sail boat will be 57 north east

Compared to its starting position, the new position of the sailboat is 57 m northeast

The given parameters;

initial displacement of the sail boat, x₁ = 40 m north

final displacement of the sail boat, x₂ = 40 m east

The new position of the sail boat when compared with the starting position is the total displacement of the sail boat.

A sketch of the sail boat displacement;

                                           ↑ →  →  →  →  →  → 40 m

                                           ↑

                                           ↑40 m

                                           ↑

The hypotenuse of this right triangle is the total displacement of the sail boat.

[tex]R^2 = 40^2 + 40^2 \\\\R^2 = 3200\\\\R= \sqrt{3200} \\\\R = 56.57 \approx 57\ m[/tex]

The direction of the sail boat is northeast

Thus, compared to its starting position, the new position of the sailboat is 57 m northeast

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Answer:

Through their studies of radioactive elements, they discovered nuclear fission.

The atoms then undergo nuclear fission, producing daughter nuclei and more neutrons.

Critical mass is the minimum mass of fissionable material required to sustain a nuclear fission reaction.

Imagine an energy source that is more powerful than nuclear fission or even nuclear fusion.

The products of uranium mining and nuclear fission remain radioactive for hundreds of thousands of years.

Health officials did not test for Strontium 90, a radioactive carcinogenic byproduct of nuclear fission.

And no one's going to be able to invent all the hydrogen-powered cars and nuclear fission energy we're supposed to have in the future.

The development of nuclear fission weapons and later thermonuclear fusion weapons represented an incomparable revolution in weaponry.

The element can be prepared artificially in particle accelerators and is a byproduct of nuclear fission reactions.

Nuclear fusion reactions are like nuclear fission reactions, therefore, in the respect that some quantity of mass is transformed into energy.

Before World War II, German chemists Otto Hahn and Fritz Strassmann discovered nuclear fission.

Element 109 is named meitnerium, for Lise Meitner, who was the first to realize that uranium undergoes nuclear fission.

The reason is that nuclear fission occurs best with neutrons that move at relatively modest speeds, called thermal neutrons  

The simple atom bomb owed its explosive power to the energy released by nuclear fission, or fusion.

An atomic bomb is a weapon of mass destruction which uses nuclear fission to produce vast amounts of energy.

These engines use the heat of nuclear fission to drive steam turbines, which in turn charge the batteries.  

Pellets of nuclear fuel are contained within the fuel rods of nuclear fission reactors.

It is likely that nuclear fission, hydroelectricity, wind power and direct solar power will be important sources for future electricity generation.  

Their research provided the groundwork for other modern-day solutions that use microwave energy and light to propel ships, rather than nuclear fission.

Why is the public too dumb to understand the Privy Council, too unscientific to understand genetic engineering, but is now an expert on nuclear fission? btw this is for c

Answer:

A.When a large, fissile atomic nucleus such as uranium-235 absorbs a neutron, it may undergo nuclear fission.In the first step, a uranium-235 atom absorbs a neutron, and splits into two new atoms, releasing three new neutrons and a large amount of binding energy.

B. One of the biggest reasons why we haven't been able to harness power from fusion is that its energy requirements are unbelievably, terribly high. In order for fusion to occur, you need a temperature of at least 100,000,000 degrees Celsius. That's slightly more than 6 times the temperature of the Sun's core.

C. You would need less uranium to fuel it and it would generate better electricity, but its energy requirements are too high, and we would not be able to control it

Explanation:

Answer:

15km/hr²

Explanation:

speed =v-u/t         (v=final speed,u=initial speed ,t=time taken)

60-30/2

=15km/hr²....

Answer: energy source, path, and load

Explanation:

Answer:

1) The wires

2) A component e.g. light

3) A power source

Explanation:

A power source is a basic part of a circuit because if the circuit doesn't have a power source, how will the electrons flow around? . A component is a basic part of a circuit because what's the point of having a circuit without something happening for example a light flashing or a motor turning. Finally, the wires are important because they carry the electrical charge for the component to turn on so if there is no wires there is no electrical flow being carried along

Answer:

12 m/s

Explanation:

Speed can be found using the following formula.

[tex]s = \frac{d}{t}[/tex]

where s is speed, d is distance traveled and t is the time.

We know that Cynthia sprinted 60 meters in 5 seconds. Therefore, the distance is 60 meters and the time is 5 seconds.

d=60

t=5

Substitute these values into the formula.

[tex]s=\frac{60}{5}[/tex]

Divide

[tex]s=12[/tex]

Add appropriate units. For this problem, the appropriate units would be meters per second, or m/s.

[tex]s=12 m/s[/tex]

Cynthia's speed is 12 meters per second.

Answer:

i think its the first one...you could have searched it up though.

Explanation:

Answer:

1) b,

2)a,

3)3seconds

4)10&30

5)0

Explanation:

Explanation:

1) Radar uses radio waves, which are a type of electromagnetic energy. Sonar uses the echo principle by sending out sound waves underwater or through the human body to locate objects. Sound waves are a type of acoustic energy. Because of the different type of energy used in radar and sonar, each has its own applications.

2)Radar systems operate using radio waves primarily in air, while sonar systems operate using sound waves primarily in water (Minkoff, 1991). Despite the difference in medium, similarities in the principles of radar and sonar can frequently result in technological convergence.

Answer:

1) Radar uses radio waves, which are a type of electromagnetic energy. Sonar uses the echo principle by sending out sound waves underwater or through the human body to locate objects. Sound waves are a type of acoustic energy. Because of the different type of energy used in radar and sonar, each has its own applications.

2)Radar systems operate using radio waves primarily in air, while sonar systems operate using sound waves primarily in water (Minkoff, 1991). Despite the difference in medium, similarities in the principles of radar and sonar can frequently result in technological convergence.

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Explanation:

Answer:

degree celsius

Explanation:

it's measured in degree Celsius

Answer:

[tex]3 \cdot 10^{11} : 1[/tex]

Explanation:

Silver is a generally excellent conductor, this implies its resistivity is low (from table, we can check the exact worth i.e [tex]\rho_s = 1.6 \cdot 10^{-8} \Omega m[/tex])

Pure water, rather, is an extremely awful conductor, this implies its resistivity is exceptionally high, of order of [tex]k \Omega \cdot m (10^3 \Omega m )[/tex]

Indeed, even without knowing the exact estimation of the pure water resistivity, we can appraise the proportion between the pure water resistivity and the silver resistivity by looking at the two orders of magnitude:

[tex]r= \frac{10^3 \Omega m}{10^{-8} \Omega m} \sim 10^{11}[/tex]

Therefore, we can say that the correct answer is

[tex]3 \cdot 10^{11} : 1[/tex]

Answer:

Organisms are classified into domains and kingdoms based on their cell type, their ability to make food, and the number of cells in their bodies.

Explanation:

there

Answer:

spectrum

Explanation:

The spectrum formed different colors due to refraction of light

Answer:

A A A A A

Explanation:

correct on edge:)

Answer:

8. 484 so 8.5cm is the answer

Explanation:

Trig ratio.. I used cosine here

Cos 45= x /12

X = 12 x cos 45

= 12 x 0.707

= 8.484

=8.5

The pressure difference between inside the house and the outside of the house is 540 Pa.

Using Bernoulli's equation.

[tex]P1+\frac{1}{2} \rho v1^2 = P2 + \frac{1}{2} \rho v2^2 \\\\P1 + 0 = \delta P = \frac{1}{2} \rho v2^2 \\\\\delta p = \frac{1}{2}(1.2)(30)^2\\\\\delta p = 540 pa[/tex]

Using pressure definition:

ΔP = F / A

F = 9.45 × 10⁴ N

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Answer:

A pure substance (an element or a compound) is made up of only one type of atom, or molecule.

Examples: water (H2O molecules), oxygen (O2 molecules), argon (Ar atoms).

A mixture is made of up of more than one type of atom or molecule.

Examples: salt water (H2O molecules, Na+ ions, Cl- ions),

air (N2 molecules, O2 molecules, Ar atoms, CO2 molecules)

Note: the composition of a pure substance is fixed, but the composition of a mixture can vary. Two salt water solutions might not have the same concentration of salt. Or, if you prefer, one blueberry muffin might have more blueberries in it than another blueberry muffin.

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Answer:

B

Explanation:

If done incorrectly and not under said guidelines that is.

Explanation: When the ray of light falls on a highly polished and smooth surface, then after striking it bounce back into the same medium, this phenomenon is called reflection. So, mirror works on the principle of reflection

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Explanation:

Answer: The mirror is a device based on the principle of reflection whereas the lens is based on the principle of refraction

Answer:

Centripetal force, F = 900 N

Explanation:

We have,

Speed of a car is 15 m/s

Mass of the car is 20 kg

Radius of the valley is 5 m

It is required to find the magnitude of the centripetal force acting on the car. The centripetal force acting on the car is due to the motion in circular path. The centripetal force is given by :

[tex]F=\dfrac{mv^2}{r}\\\\F=\dfrac{20\times (15)^2}{5}\\\\F=900\ N[/tex]

So, the centripetal force of 900 N is acting on the car.