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3 years ago

If your shirt is dyed so that it looks violet, which color of light is reflected by the dye?

Physics

2 answers:

EleoNora [17]3 years ago

8 0

Answer:

violet

Explanation:

Bad White [126]3 years ago

4 0

Violet i took the test and it gave me the answer

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If the temperature outside increases from 30 degrees to 60 degrees, how has the kinetic energy of the air particles changed?

musickatia [10]

The kinetic energy increase because as temperature warms up particles move faster

7 0

3 years ago

Read 2 more answers

Tarzan is running with a horizontal velocity, along level ground. While running, he encounters a 2.21 m vine of negligible mass,

Lena [83]

Answer:

a) $a_c = 1.09m/s^2$

b) T = 720.85N

Explanation:

With a balance of energy from the lowest point to its maximum height:

$m*g*L(1-cos\theta)-1/2*m*V_o^2=0$

Solving for $V_o^2$ :

$V_o^2=2*g*L*(1-cos\theta)$

$V_o^2=2.408$

Centripetal acceleration is:

$a_c = V_o^2/L$

$a_c = 2.408/2.21$

$a_c = 1.09m/s^2$

To calculate the tension of the rope, we make a sum of forces:

$T - m*g = m*a_c$

Solving for T:

$T =m*(g+a_c)$

T = 720.85N

3 0

4 years ago

PLEASE HELP!! I'll mark brainliest for correct answer.

Tju [1.3M]

1. Car A
2. Car C
3. Car A
4. 1500 J
5. 750 J
6. 750 J
7. Car A was had a height higher relative to the ground compared to all the other cars.
8. mgh
9. B

6 0

3 years ago

KmCL`MSMCMMXMMXMXMMX WHAT ARE THE consequences OF A VOLCANO

DerKrebs [107]

Answer:

Fast-moving lava can kill people and falling ash can make it hard for them to breathe. They can also die from famine, fires and earthquakes which can be related to volcanoes. People can lose their possessions as volcanoes can destroy houses, roads and fields. Lava can kill plants and animals too.

Explanation:

Hope this helps :)

Brainliest?

4 0

3 years ago

Escribe verdadero o falso :

Oduvanchick [21]

By defining kinematics and derivative relations we can find which statements are true or false:

a) False. The derivative is the instantaneous velocity.

b) True. The second drift is the instantaneous acceleration.

c) False the derivative is

d) False the derivative is

a) The velocity is defined with the variation of the position with respect to time.

$v= \frac{dx}{dt}$

Wher x is the position and t the time.

In the change of the average velocity is the average value of the velocity in an interval

$v = \frac{v_f - v_o}{t}$

We can see that the derivative is the speed in a very small timet, that is, the speed instantaneous. Therefore the statement is False.

The prime derivative of the position is the instantaneous velocity, not the average velocity.

b) Acceleration is defined as the change in position with respect to time..

$a = \frac{dv}{dt}$

Let's use the chain rule.

a = $\frac{d}{dt} \frac{dx}{dt}$

a = $\frac{d^2 x}{dt^2}$

Therefore the second derivative of the position is the instantaneous acceleration.

The statement is True.

Questions c and d ask the derivative of a function

f (x) = 2 x aⁿ

c) derivative with respect of x

$\frac{df}{dx} = 2 a^n$

The answer is False.

d) derivative with respect to a.

$\frac{df}{da} = 2n \ x a^{n-1}$

Answer d is false

In conclusion using the definition of kinematics and derivative relations we can find which statements are true.

a) False. The derivative is the instantaneous velocity.

b) True. The second drift is the instantaneous acceleration.

c) False the derivative is: $\frac{df}{dx} = 2 a^n$

d) False the derivative is: $\frac{df}{da} = 2n \ x a^{n-1}$

Learn more about the relationship between derivatives and kinematics here: brainly.com/question/15344251

8 0

3 years ago