Pls solve these due now

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In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.03 106 m/s.(a) Find the force acting on the electron as it revolves in a circular orbit of radius 5.35 10-11 m. whats the magnitude in N ? (b) Find the centripetal acceleration of the electron. whats the magnitude in m/s2
A truck is moving around a circular curve at a uniform velocity of 13 m/s. If the centripetal force on the truck is 3,300 N and the mass of a the truck is 1,600 kg what's the radius of the curve.
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If chris throws a baseball 60 meters in 4 seconds, what is the average speed of the football?

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The average speed of the football is 15 meters per second. Just divide both of the numbers by 4 :)

An ant sits on the back of a mouse. The mouse carries the ant across the floor for a distance of 10 meters. Was there work done by the mouse? Explain.

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yes because the mouse was moving with kts kwn force.

Answer: no

Explanation:

force and distance are not in the same direction

The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 6.58 m, measured from its tip to the center of the circle. Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a point located 4.78 m from the center of the circle.

Answers

Answer:1.37

Explanation:

Given

Length of Blade $L=6.58 m$

Let blades be rotating at an angular velocity of $\omega$

centripetal acceleration at any radial distance r is given by

$a_c=\omega ^2\cdot r$

at $r=6.58$

$a_c_1=\omega ^2\cdot 6.58$

at $r=4.78 m$

$a_c_2=\omega ^2\cdot 4.78$

thus $(a_c_2)/(a_c_1)=(\omega ^2\cdot 4.78)/(\omega ^2\cdot 6.58)$

$(a_c_2)/(a_c_1)=0.72$

$(a_c_1)/(a_c_2)=1.37$

Final answer:

Centripetal acceleration depends inversely on the radius. The ratio of the centripetal accelerations at the end of the blade and at 4.78m from the center is approximately 0.73.

Explanation:

The centripetal acceleration of an object moving in a circle of radius r is given by the formula ac = v²/r, where v is the tangential velocity of the object. In this scenario, the velocity at both points on the blade is the same, as the blade is rotating as a whole.

Therefore, the centripetal acceleration on the blade at any point is inversely proportional to the radius from the center of the circle to that point.

So, the ratio of the centripetal acceleration at the end of the blade (6.58 m from the center) to the centripetal acceleration at a point located 4.78 m from the center, is the inverse ratio of their distances from the center. Therefore, the ratio is 4.78/6.58 which approximately equals 0.73.

Learn more about Centripetal Acceleration here:

brainly.com/question/14465119

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Starvation is the result of a mal-distribution of food, which is primarily due to drought and a lack of resources.
exportation.
civil war.
dictatorships.

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Starvation is the result of amal-distribution of food, which is primarily due to drought and of course, alack of resources. From the choices above, of course dictatorships, which isexploiting the citizens’ natural resources for one’s own tyrannical benefit maylead to lack of resources. Civil war, will not only cause casualties but lackof resources as well. As well as too much exportation of resources leavingnothing for the country. The point is, everything will cause lack of resourcesbut lack of resources is the root cause of starvation where the demands of thepeople are greater than the supply.

How many grams is 5kg of tap water?

Answers

When you write "5 kg", the little 'k' in the middle stands for 1,000.
So '5 kg' means '5,000 g'.

It doesn't matter what substance you're working with. It could be
tap-water, gold, air, or mud. 5 kg of it is still 5,000 grams of it.

The greater the concentration of sulfur and nitrogen oxides, the higher the pH of precipitation.True
False

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Answer: False

Nitrogen and sulfur dioxide are acidic oxides in nature. The burning of fossil fuels and other sources are responsible for addition of these oxides in the atmosphere of earth. These oxides mixed with water vapor causes acid rain. Being acidic in nature they will have low pH value. Therefore, greater the concentration of sulfur and nitrogen oxides, will lower the pH value of precipitation.

Answer:

False

Explanation:

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