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
AVprozaik [17]
3 years ago
13

When an objects total mechanical energy is conserved and it is dropped from rest how does the objects initial potential energy c

ompare with its final kinetic energy?
Physics
1 answer:
frozen [14]3 years ago
8 0

Answer:Magnitude of potential energy before falling will be equal to the magnitude of the final kinetic energy, energy is only converted from potential to kinetic

Explanation: law of conservation of energy says that energy can neither be created or destroyed but Change from one form to another.so nothing will happen to the size of the potential energy when it changes to kinetic energy

You might be interested in
Fill in the blank
Anuta_ua [19.1K]

Answer: i think it’s plant and glass

Explanation:

8 0
3 years ago
Read 2 more answers
If a car moving down this road rounds this curve and changes its direction to the right, is this an example of speed, velocity,
mars1129 [50]

Answer: velocity

Explanation: it's the rate of change of the objects position/ consistent change

4 0
3 years ago
Read 2 more answers
An object of irregular shape has a characteristic length of L = 0.5 m and is maintained at a uniform surface temperature of Ts =
goblinko [34]

Answer:

The value of the average convection coefficient is 20 W/Km².

Explanation:

Given that,

For first object,

Characteristic length = 0.5 m

Surface temperature = 400 K

Atmospheric temperature = 300 K

Velocity = 25 m/s

Air velocity = 5 m/s

Characteristic length of second object = 2.5 m

We have same shape and density of both objects so the reynold number will be same,

We need to calculate the value of the average convection coefficient

Using formula of  reynold number for both objects

R_{1}=R_{2}

\dfrac{u_{1}L_{1}}{\eta_{1}}=\dfrac{u_{2}L_{2}}{\eta_{2}}

\dfrac{h_{1}L_{1}}{k_{1}}=\dfrac{h_{2}L_{2}}{k_{2}}

Here, k_{1}=k_{2}

h_{2}=h_{1}\times\dfrac{L_{1}}{L_{2}}

h_{2}=\dfrac{q}{T_{2}-T_{1}}\times\dfrac{L_{1}}{L_{2}}

Put the value into the formula

h_{2}=\dfrac{10000}{400-300}\times\dfrac{0.5}{2.5}

h_{2}=20\ W/Km^2

Hence, The value of the average convection coefficient is 20 W/Km².

7 0
3 years ago
What can be broken down into tiny fundamental subatomic particles?
Nana76 [90]

The correct answer is matter. Matter is a physical substance, so it is that only option provided that can be broken down to the subatomic particle level.

4 0
3 years ago
2. A car accelerates uniformly from +10.0 m/s to +50.0 m/s over a distance of 225 m. How long did it take to go that distance? S
artcher [175]
Let's call the constant acceleration a.
At a time t, its speed will thus be v(t)=a*t+v0 where v0 is its initial speed, here 10 m/s. Hence v(t)=a*t+10.

From there we can deduce the position P(t)=a*t^2/2+10t+p0 where p0 is the initial position, here 0.

Hence P(t)=a*t^2/2+10t

Let's call T the time at which it's at 50 m/s, we know that P(T)=225m and that v(T)=50 m/s hence a*T+10=50 thus a=40/T and P(T)=(40/2+10)T=30T

Hence T=225/30=7.5

It took 7.5 seconds


7 0
3 years ago
Other questions:
  • What is the usual time ice takes to evaporate above a Bunsen burner?
    13·1 answer
  • A coach wants her team to have fun, win some games, and be a productive unit. What is the most important personality trait the c
    8·2 answers
  • Assume that block A which has a mass of 30 kg is being pushed to the left with a force of 75 N along a frictionless surface. Wha
    5·2 answers
  • What were clark's independent and dependent variables
    7·2 answers
  • An object completes one and half revolution of a circle of radius R calculate the displacement and distance
    6·1 answer
  • The roller coaster from problem #1 then tops a second hill at 15.0 m/s, how high is the second hill?
    10·1 answer
  • How does technology make sustainability more difficult?
    7·2 answers
  • Discuss the merits and demerits of various theories of the formation of galaxies.​
    14·1 answer
  • The speed of sound through diamond is about 12,000 m/s. The speed of sound through wood is about 3,300 m/s. Which statement expl
    11·1 answer
  • According to Newton's second law of motion, if we have a rigid, unchanging mass and we observe it accelerating, what must be hap
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!