1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
miss Akunina [59]
3 years ago
15

A dog has a speed of 7 m/s and a mass of 45 kg. What is the dog's kinetic energy?

Physics
2 answers:
Sonbull [250]3 years ago
5 0
K.E = 1/2 m*v^2
K.E = 1/2 * 45 * (7)^2
K.w = 1102.5 J
Elan Coil [88]3 years ago
3 0
The kinetic energy should be 1,102.5 joules.
You might be interested in
Tornadoes are most frequent from _____. April to June October to December January to March July to August
jenyasd209 [6]

Answer:

April to June

Explanation:

Not really an explanation, I just know it.

8 0
2 years ago
An oil layer that is 5.0 cm thick is spread smoothly and evenly over the surface of water on a windless day. A light ray from th
marshall27 [118]

Answer:

The angle of refraction in water 32.12°.

Explanation:

Given that,

Thickness = 5.0 cm

Index of refraction for oil = 1.15

Index of refraction for water = 1.33

Angle = 45°

We need to calculate the angle of refraction

When the ray of light enters from air to oil

Using formula of refraction

n_{a}\sin\theta_{a}=n_{o}\sin\theta_{o}

Where, n_{a} = refractive index of air

n_{0} = refractive index of oil

Put the value into the formula

1\times\sin45=1.15\sin\theta_{o}

\sin\theta_{o}=\dfrac{1}{\sqrt{2}\times1.15}

\sin\theta_{o}=0.6148

\theta_{o}=sin^{-1}0.6149

\theta_{o}=37.94^{\circ}

When the ray of light enters from oil to water

Using formula of refraction

n_{0}\sin\theta_{0}=n_{w}\sin\theta_{w}

Where,  n_{w} = refractive index of water

1.15\times\sin37.94^{\circ}=1.33\sin\theta_{w}

\sin\theta_{w}=\dfrac{1.15\sin37.94^{\circ}}{1.33}

\theta_{w}=\sin^{-1}0.53163

\theta_{w}=32.12^{\circ}

Hence, The angle of refraction in water 32.12°.

7 0
3 years ago
-How can a camera help someone see something he or she wouldn't normally be able to see?
joja [24]

Answer:

》How can a camera help someone see something he or she wouldn't normally be able to see?

- Although the human eye is able to observe fast events as they happen, it is not able to focus on a single point of time. We cannot freeze motion with our eyes. With a camera, however, so long as there is enough light, we can freeze motion. ... The camera can capture 'the moment', while your eye cannot.

》In what way is laser different from light produced by other sources?

-The major difference between laser light and light generated by white light sources (such as a light bulb) is that laser light is monochromatic, directional and coherent. ... Light from a conventional sources, such as a light bulb diverges, spreading in all directions.

4 0
2 years ago
Which planet is the farthest terrestrial planet from the Sun?
Ivanshal [37]
THE ANSWER IS B.MERCURY
4 0
2 years ago
Use each of the following terms in a separate
Alenkinab [10]
I think the correct answer is going to be A
3 0
3 years ago
Other questions:
  • What is terminal velocity?
    12·1 answer
  • Bob is pushing a box across the floor at a constant speed of 1.4 m/s, applying a horizontal force whose magnitude is 65 N. Alice
    5·1 answer
  • Think about your displacement at three different times throughout your day and compare it with e distance you traveled. (6 point
    15·1 answer
  • When 2.00 kJ of energy is transferred as heat to nitrogen in a cylinder fitted with a piston with an external pressure of 2.00 a
    14·1 answer
  • 7. What is the kinetic energy of a 3-kilogram ball that is rolling at 2 meters per second?
    7·2 answers
  • Help me please!!!!!!!!!!!!!/ Science
    7·1 answer
  • Why is it important that water is present within the cell?
    13·2 answers
  • What is the definition for scientific model?​
    9·2 answers
  • An airplane with a total mass of 950 kg has an engine malfunction, causing it
    15·1 answer
  • Describe how work done is related to a change in volume of a fluid. 100 points
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!