Most new jobs in the United States will be in the ____

In your opinion why are sources more valued than others? It's science

Temka [501]

Because the thing are better

8 0

3 years ago

A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experi

borishaifa [10]

Complete answer

A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration of 0.100rad/s2. After making 2844 revolutions, its angular speed is 140rad/s

(a) What is the initial angular velocity of the turbine? (b) How much time elapses while the turbine is speeding up?

Answer:

a) 126.59 radians per second

b) 134.1 seconds

Explanation:

We can use the rotational kinematic equations for constant angular acceleration.

a) For a) let’s use:

$\omega^{2}=\omega_{0}^{2}+2\alpha\varDelta\theta$ (1)

with $\omega_{0}$ the initial angular velocity, $\omega$ the final angular velocity, $\alpha$ the angular acceleration and $\Delta \theta$ the revolutions on radians (2844 revolutions = 17869.38 radians). Solving (1) for initial velocity:

$\sqrt{\omega^{2}-2\alpha\varDelta\theta}=\omega_{0}$

$\omega_{0}^2=\sqrt{(140)^2 -(2)(0.100)(17869.38)=126.59 \frac{rad}{s}}$

b) Knowing those values, we can use now the kinematic equation

$\omega=\omega_{0}+\alpha t$

with t the time, solving for t:

$t=\frac{\omega-\omega_0}{\alpha}=\frac{140-126.59}{0.1}$

$t=134.1 s$

8 0

3 years ago

Explain to me an example of forces on an object you have used recently. Include all forces acting on the object and explain if t

masha68 [24]

Answer:

a toy car being pushed by a kid, a force acts on the car

Explanation:

when the boy is pushing the car a force acts on the car which is the effort that is applied on the car and the motion is unbalanced because there will be constant stopping of the boy and also the force acting on the car

4 0

3 years ago

A scientist uses an instrument to observe the pattern of molecules in a substance. The picture below shows what the scientist se

Pie

SOLID
i hope this helps:)

3 0

3 years ago

Read 2 more answers

State and explain the effect of this fault on the linearity of the thermometer

timofeeve [1]

Explanation:

if the temperature changes , the liquid in the thermometer expands by a certain fixed amount, independent on the shape and the diameter of the capillary, only dependent on the amount of liquid. You can imagine but we'll see height difference upon a temperature changes if diameter is not constant

hope it helps you like me plz

5 0

3 years ago

Most new jobs in the United States will be in the _____.