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3 years ago

In order to be considered work, the components that must be present are

2 answers:

6 0

The components that must be present for work to be considered is a force and a movement in the same direction as the force. In the basic definition of work, a magnitude and displacement that occurs in the same direction is what makes up work. Among the choices, the correct answer is the first one.

Alex Ar [27]3 years ago

5 0

Answer:

A. a force and a movement in the same direction as the force

Explanation:

I did the test and got it.

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A jet plane flying 600 m/s experiences an acceleration of 4.0 g when pulling out of the circular section of a dive. What is the

Brilliant_brown [7]

To solve this problem we will apply the concepts related to the equations of linear motion and angular motion in order to find the radius. Our values are given as,

$g=9.81m/s^2$

Then

$4g= 39.24 m/s^2$

The relation between the acceleration and the angular velocity and the radius is,

$a_c=\omega^2*r$

The angular velocity and the lineal velocity can be related as,

$v=\omega r$

The acceleration and the velocity was given, then

$39.24=\omega^2 r$

$600=\omega r$ $\rightarrow r = \frac{600}{\omega}$

Replacing at the first equation we have,

$39.24 = \omega^2 (\frac{600}{\omega} )$

$\omega = \frac{39.24}{600}$

$\omega = 0.0654rad/s$

Now using this expression to find the radius we have that

$r = \frac{600}{\omega}$

$r = \frac{600}{0.0654}$

$r = 9174.31 \approx 9200m$

Therefore the correct answer is C.

5 0

2 years ago

A 81 kg block is released at a 3.8 m height. the track is frictionless. the block travels down the track, hits a massless spring

Alenkinab [10]

Since the track is friction less, blockâ€™s kinetic energy at the bottom of the track is equal to its potential energy at the top of the track.
PE = 81 * 9.8 * 3.8 = 3016.44 J
Work = 1/2 * 1888 * d^2
PE = Kinetic energy at the base.
1/2 * 1888 * d^2 = 3016.44
d = 1.78 approx 1.8
F = Ke = 1888 * 1.8 = 3398.4N

8 0

2 years ago

A gymnast with mass m1 = 44 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 =

SVEN [57.7K]

Answer:

Explanation:

e. At the right edge of the beam

Check attachment for other solution

4 0

2 years ago

Heated lithium atoms emit photons of light with an energy of 2.961 × 10−19 J. Calculate the frequency and wavelength of one of t

tatiyna

Answer:

4.5 x 10¹⁴ Hz

666.7 nm

1.8 x 10⁵ J

The color of the emitted light is red

Explanation:

E = energy of photons of light = 2.961 x 10⁻¹⁹ J

f = frequency of the photon

Energy of photons is given as

E = h f

2.961 x 10⁻¹⁹ = (6.63 x 10⁻³⁴) f

f = 4.5 x 10¹⁴ Hz

c = speed of light = 3 x 10⁸ m/s

λ = wavelength of photon

Using the equation

c = f λ

3 x 10⁸ = (4.5 x 10¹⁴) λ

λ = 0.6667 x 10⁻⁶ m

λ = 666.7 x 10⁻⁹ m

λ = 666.7 nm

n = number of photons in 1 mole = 6.023 x 10²³

U = energy of 1 mole of photons

Energy of 1 mole of photons is given as

U = n E

U = (6.023 x 10²³) (2.961 x 10⁻¹⁹)

U = 1.8 x 10⁵ J

The color of the emitted light is red

6 0

3 years ago

Please select the word from the list that best fits the definition Visualizes where items are located

Amanda [17]

Answer:I’m pretty sure it’s spatial

Explanation:

3 0

3 years ago

Read 2 more answers