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2 years ago

What do you think happens to kinetic energy with potential energy being increased?

Physics

1 answer:

swat322 years ago

8 0

Answer:

If the kinetic energy increases, the potential energy decreases, and vice-versa.

Explanation:

The amount of change in kinetic energy is equal to the amount of change in potential energy.

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The idea that species change over time is called

qaws [65]

The answer is evolution. When a specifies evolves over time they change and adapt to their environment.

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3 years ago

Read 2 more answers

You have a remote-controlled car that has been programmed to have velocity v⃗ =(−3ti^+2t2j^)m/s, where t is in s. At t = 0 s, th

DiKsa [7]

Answer:

The y-component of the car's position vector is 670m/s.

The x-component of the acceleration vector is -3, and the y-component is 40.

Explanation:

The displacement vector of the car with velocity

$\boldsymbol{v}= (-3t\boldsymbol{i}+2t^2\boldsymbol{j})m/s$

is the integral of the velocity.

Integrating $\boldsymbol{v}$ we get the displacement vector $\boldsymbol{d}$ :

$\boldsymbol{d}=(-\dfrac{3}{2}t^2\boldsymbol{i}+\dfrac{2}{3}t^3\boldsymbol{j} )$

Now if the initial position if the car is

$\boldsymbol{r}= (3.0\boldsymbol{i}+2.0\boldsymbol{j})$

then the displacement of the car at time $t$ is

$\boldsymbol{d(t)}= \boldsymbol{r+d}$

$\boxed{\boldsymbol{d(t)}=(-\dfrac{3}{2}t^2+3.0\boldsymbol{i}+\dfrac{2}{3}t^3+2.0\boldsymbol{j} )}$

Now at $t=10s$ , we have

$\boxed{\boldsymbol{d(t)}=(-147\boldsymbol{i}+670\boldsymbol{j} )}m$

The y-component of the car's position vector is 670m/s.

The acceleration vector is the derivative of the velocity vector:

$\boldsymbol{a(t)}=\dfrac{d\boldsymbol{v(t)}}{dt} =(-3\boldsymbol{i}+4t\boldsymbol{j})$

and at $t=10s$ it is

$\boldsymbol{a(t)}=(-3\boldsymbol{i}+40\boldsymbol{j})m/s^2$

The x-component of the acceleration vector is -3, and the y-component is 40.

5 0

3 years ago

nlexa [21]

Answer:

By using Pythagoras Formula

Explanation:

Measure the distance man is sliding. “It will be c”

Measure the distance of between the tower and a post with which wire is attached. It will be “b”

Then apply Pythagoras Formula c2=a2 + b2 and solve it.

It will give the height of tower.

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3 years ago

15. Using 3 – 4 sentences, explain, in your own words, two ways you could cause an electrical current using only a wire and a ho

never [62]

An electric current will start to form when a part of the wire is within a magnetic field. Using the magnet you could put the whole wire into the magnetic field of the magnet and move it across the magnet so that a current starts to run.

Another way you could do it is to make the wire so that it looks like a coil and stick the magnet in the middle of the coil of wire. This will cause an induced current in the coil of wire.

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3 years ago

A rigid tank contains 10 lbm of air at 30 psia and 60 F. Find the volume of the tank in ft3. The tank is now heated until the pr

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Answer:

Hence the amount of heat transfer is 918.75 Btu.

Explanation:

Now,

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3 years ago