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erastovalidia [21]
3 years ago
8

For each of the problems below, you will need to draw a graph to find the solution.

Physics
1 answer:
Gelneren [198K]3 years ago
3 0

Answer:

Final velocity (v) of an object equals initial velocity (u) of that object plus acceleration (a) of the object times the elapsed time (t) from u to v. Use standard gravity, a = 9.80665 m/s2, for equations involving the Earth's gravitational force as the acceleration rate of an object.

Explanation:

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hammer [34]
<span>Energy = h nu, where nu is the frequency
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So nu = E/h = 1 x 10^5 J /h = 0.15 x 10^29 / s
nu lambda = c, the speed of light.
lambda = wavelength = c / nu =3 x 10^8 / 0.15 x 10^29 = 20 x 10^-21 m.

this can possibly be a gamma ray. Gamma rays are very penetrating. It's both matter and an energy. They are electromagnetic radiation that results from a radioactive material. 

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7 0
3 years ago
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A bus is designed to draw its power from a rotating flywheel that is brought up to 3000 rpm by an electric motor. The flywheel i
Arada [10]

To solve this problem we will apply the concept of rotational kinetic energy. Once this energy is found we will proceed to find the time from the definition of the power, which indicates the change of energy over time. Let's start with the kinetic energy of the rotating flywheel is

E_r = \frac{1}{2} I\omega^2

Here

I = moment of inertia

\omega = Angular velocity

Here we have that,

\omega = 3000\frac{rev}{min}(\frac{2\pi rad}{1rev})(\frac{1min}{60s})

\omega = 314.159rad/s

Replacing the value of the moment of inertia for this object we have,

E_r = \frac{1}{2} (\frac{MR^2}{2})\omega^2

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P = \frac{E_r}{\Delta t}

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3 0
4 years ago
Reginald slipped and broke his leg in his kitchen when he ran inside to grab a cookie. His mother had just mopped the floor. Wha
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Answer:

A. <u>The water decreases the friction between the floor and the feet </u>

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3 0
3 years ago
A physics professor uses an air-track cart of mass m to compress a spring of constant k by an amount x from its equilibrium leng
zhenek [66]

Answer:

        v = √k/m    x

Explanation:

We can solve this exercise using the energy conservation relationships

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final point. Cart after leaving the spring

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4 years ago
What causes the marks on the moons surface?
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Mountains, valleys, plains, piles of rocks, and craters do.

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3 years ago
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