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
FinnZ [79.3K]
3 years ago
8

A 30 kg dog runs at a speed of 15 m/s. What is the dog's kinetic energy (in jewels)? Round the answer to two significant digits.

Physics
1 answer:
mel-nik [20]3 years ago
6 0

Answer:

It would be 12.34

Explanation:

You might be interested in
The phases of the moon depend on how much of the lighted side of the moon can be seen from earth.is this true or false
Sindrei [870]
The answer to this question is going to be False 

6 0
3 years ago
Is there supposed to be a slit at the top of your adams apple?
Allushta [10]
No, there isn't. Please consult your doctor if this is the case with yours or someone you know.
7 0
3 years ago
The position-time graph for a bug crawling along a line is shown in item 4 below. Determine whether the velocity is positive, ne
Naddika [18.5K]

Answer: The velocity at different marked time points are given as

t1 = -

t2 = +

t3 = +

t4 = -

t5 = 0

Explanation:

The slope of the tangent of the curve indicates the instantaneous velocity. So if the slope of the tangent is positive, that Is, the tangent makes a positive angle (above the horizontal axis) with the horizontal

axis, then the velocity at this point is positive, and if the slope of the tangent is negative, that is the tangent makes a negative angle with the horizontal axis (below the horizontal axis), then the velocity at this point is negative.

When the tangent of the line is parallel to the horizontal axis, the velocity is 0.

From the position-time graph attached, the sign on the instantaneous velocity for each time marked on the graph is given below

t1 = -

t2 = +

t3 = +

t4 = -

t5 = 0

QED!

5 0
3 years ago
As a system expands, it absorbs 52.5 J of energy in the form of heat from the surroundings. The piston is working against a pres
Kaylis [27]

Answer:

Vi = 0.055 m³ = 55 L

Explanation:

From first Law of Thermodynamics, we know that:

ΔQ = ΔU + W

where,

ΔQ = Heat absorbed by the system = 52.5 J

ΔU = Change in Internal Energy = -102.5 J (negative sign shows decrease in internal energy of the system)

W = Work Done in Expansion by the system = ?

Therefore,

52.5 J = - 102.5 J + W

W = 52.5 J + 102.5 J

W = 155 J

Now, the work done in a constant pressure condition is given by:

W = PΔV

W = P(Vf - Vi)

where,

P = Constant Pressure = (0.5 atm)(101325 Pa/1 atm) = 50662.5 Pa

Vf = Final Volume of System = (58 L)(0.001 m³/1 L) = 0.058 m³

Vi = Initial Volume of System = ?

Therefore,

155 J = (50662.5 Pa)(0.058 m³ - Vi)

Vi = 0.058 m³ - 155 J/50662.5 Pa

Vi = 0.058 m³ - 0.003 m³

<u>Vi = 0.055 m³ = 55 L</u>

7 0
3 years ago
What are the base units in the metric system?
Delicious77 [7]

meter, millimeters, kilometers. liters. kilograms. centimeters etc... look up the rest

5 0
3 years ago
Read 2 more answers
Other questions:
  • If a net force accelerates a 4.5-kg tool at 40 m/s2, what acceleration would that same net force give to an 18-kg tool?
    9·1 answer
  • How do hydrothermal minerals form?
    8·1 answer
  • How is static electricity different from electric current
    14·1 answer
  • What force is supplied by a jet’s engines when 7 x 106 Joules of work is required to move the plane down a 450 meter runway?
    10·1 answer
  • Probably the deadliest aspect of a thunderstorm is _____. rain thunder lightning hail
    7·2 answers
  • 4. Challenge: Try to explain these results based on the fact that air pressure decreases with
    15·1 answer
  • Can some help me please im confused ‍♀️ !!! I,ll give you BRAINLIES
    9·2 answers
  • Select the correct answer. A credit union is a business that is owned by people who have something in common, offers you a place
    11·1 answer
  • Answer plzz<br>How do we apply Interval Training to our lower body for a workout?
    15·1 answer
  • Uranus and neptune have methane clouds but jupiter and saturn do not. Which factor explains why?.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!