Evanumber001

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Calculus Help

If a rock is thrown upward on the planet mars with the velocity of 10 m/s its height in meters t seconds later is given by y = 10t - 1.86t^2. Find the average velocity over the given time intervals.

a) [1,3]
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Evanumber001 6 Feb 2022

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calculus

What is the half-life of a radioactive isotope if the activity of a sample drops from 6,272 cpm to 196 cpm in 29.0 min?

Evanumber001 8 Des 2021

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calc

What is the energy in eV of the electron of a hydrogen atom for the orbit designated n = 4?

Evanumber001 8 Des 2021

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calc

What is the energy in eV of the electron of a hydrogen atom for the orbit designated n = 3?

Evanumber001 8 Des 2021

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calc

What is the radius in nm of the electron orbit of a hydrogen atom for n = 2?

Evanumber001 8 Des 2021

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263

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calc

What is the radius in nm of the electron orbit of a hydrogen atom for n = 1?

Evanumber001 8 Des 2021

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291

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calc

Photons of a certain infrared light have an energy of 1.12 10-19 J.

(a) What is the frequency of this IR light?
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Evanumber001 8 Des 2021

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270

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calc

Photons of a certain ultraviolet light have an energy of 6.68 10-19 J.

(a) What is the frequency of this UV light?
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Evanumber001 8 Des 2021

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333

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phy sci

Which has more kinetic energy: a 0.0011-kg bullet traveling at 406 m/s or a 5.4 107-kg ocean liner traveling at 15 m/s (29 knots)?
the bullet has greater kinetic energy
the ocean और पढ़ें ..

Evanumber001 29 Okt 2021

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phy sci

What is the kinetic energy of a 22 kg dog that is running at a speed of 7.3 m/s (about 16 mi/h)?

Evanumber001 29 Okt 2021

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330

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phy sci

A 66 kg student traveling in a car with a constant velocity has a kinetic energy of 1.7 104 J. What is the speedometer reading of the car in km/h?

Evanumber001 29 Okt 2021

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321

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phy sci

(a) What is the kinetic energy in joules of a 1140-kg automobile traveling at 89 km/h?
(b) How much work would have to be done to bring a 1140-kg automobile traveling at 89 km/h to a stop?

Evanumber001 29 Okt 2021

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How much work does gravity do on a 0.110-kg ball falling from a height of 30.0 m? (Neglect air resistance.)

How much work does gravity do on a 0.110-kg ball falling from a height of 30.0 m? (Neglect air resistance.)

Evanumber001 29 Okt 2021

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305

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phys sci

A man pushes a lawn mower on a level lawn with a force of 186 N. If 43% of the force is directed horizontally, how much work is done by the man in pushing the mower 7.2 m?

Answer in joules please और पढ़ें ..

Evanumber001 29 Okt 2021

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328

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Physical Science

What is the volume of a piece of platinum (𝜌 = 22.6 g/cm3) that has a mass of 0.20 kg? (Enter your answer in cm3.)

Evanumber001 29 Okt 2021

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408

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maf

Two ice skaters stand together as illustrated in Figure (a) below. They "push off" and travel directly away from each other, the boy with a velocity of v = 0.470 m/s to the left. If the boy weighs 721 N and the girl और पढ़ें ..

Evanumber001 7 Okt 2021

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losing it on this question

A man pushes a lawn mower on a level lawn with a force of 186 N. If 43% of the force is directed horizontally, how much work is done by the man in pushing the mower 7.2 m?

If you could solve the question और पढ़ें ..

Evanumber001 7 Okt 2021