9.) The fastest land animal, the cheetah, can accelerate from 0 m/s to 33 m/s in 3 seconds. What is the cheetah's acceleration?

Answers

Answer 1

Answer:

Answer:

11 m/s

Explanation:

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the atomic mass of potassium is 39. if its atomic number is 9, it has how many neutrons within each potassium atom?
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When two objects with electrical charges interact, which affect the strength of that interaction? Choose all answers that are correct. A. amount of charge B. how near the objects are to each other C. climate conditions D. the force of gravity

The copper wire and bulb is connected in a series with 220 V electric supply. Why only an electric bulb glows where as the copper wire remains the same.Give REASON to support the answer.

Answers

-- In a series circuit, the current ( I ) is the same at every point.

-- The power dissipated by any section of the circuit is I² x Resistance.

-- The wire has very low resistance, so I²R is very low dissipated power.

-- The filament in the bulb has most all of the resistance in the circuit,
so it dissipates virtually all the power of the circuit, and certainly much
more than the wires do.

Charles's law states that at a constant pressure, the volume of a given amount of gas is _____ to its absolute temperature.

Answers

Directly Proportional

Which quantity can be calculated using the equation E = mc2?the energy needed to split an atom into separate protons, neutrons, and electrons
the energy needed to split the nucleus into separate protons and neutrons
the energy needed to remove an electron from an atom
the energy needed to add an electron to an atom

Answers

Answer;

-The energy needed to split an atom into separate protons, neutrons, and electrons

Explanation;

E = mc² The equation is derived directly from Einstein’s Special Theory of Relativity .

Each of the letters of E = mc2 stands for a particular physical quantity. Writing them out in full we get:

Energy = mass × the speed of light squared

In other words: E = energy (measured in joules, J), m = mass (measured in kilograms, kg), c = the speed of light (measured in metres per second, ms-1), but this needs to be squared.

Explanation :

Einstein's equation is given by :

$E=m* c^2$ ..............(1)

m is the mass

c is the speed of light $c=3* 10^8\ m/s$

The energy needed to split an atom into separate protons, neutrons, and electrons can be calculated by using equation (1).

The energy needed to split the nucleus into separate protons and neutrons is called nuclear binding energy.

The energy needed to remove an electron from an atom is called ionization energy.

The energy needed to add an electron to an atom is called electron affinity.

So, the correct option is (A).

Why is crumpling a sheet of aluminum foil a physical change ?

Answers

Answer: Because it does not change into a new substance.

Explanation:

It is a physical change because a new substance is not being formed. When you crumble a sheet of aluminum, you can uncrumple it and change it back to its original form.

Which of the following is a possible use for nuclear energy?a. power plants
b. weapons
c. powering submarines
d. all of the above

Answers

Nuclear energy can be used to power all ofthe above choices. Nuclear power plants produce radioactive waste that must bestored properly. It is very impossible for a nuclear power plant to have nowaste at all since lots of chemicals are used to create the process as it givesenergy to other machines, weapons such as bombs and powering submarines. Radioactive waste can not be released intolocal water supplies since the wastes are very radioactive and may causemutation to the fishes and bioaccumulation which will affect humans as well. Itwill also cause air pollution if the chemicals are not stored properly.

Answer:

D. All of the above. you're welcome

A glass lying on table doesn't possess friction.why?

Answers

becsud it's not moving

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Maria throws an apple vertically upward from a height of 1.3 m with an initial velocity of +2.8 m/s. Will the apple reach a friend in a tree house 5.9 m above the ground? The acceleration due to gravity is 9.81 m/s 21. No, the apple will reach 5.27136 m below the tree house2. Yes, the apple will reach 5.27136 m above the tree house3. No, the apple will reach 1.43117 m below the tree house4. No, the apple will reach 1.5289 m below5. Yes, the apple will reach 1.5289 m above the tree house6. Yes, the apple will reach 1.43117 m above the tree house

The right-hand rule may determine the direction of magnetic force, conventional current, or the magnetic field as long as two of these directions are known. True or False?