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3 years ago

Which learning style describes children who use the body effectively like a surgeon or a dancer?

Physics

1 answer:

creativ13 [48]3 years ago

3 0

Answer:

A. Bodily Kinesthetic

Explanation:

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Calculate the power transfer when a pump moves 50kg of water through a vertical height of 8meters in 5seconds (take g =10meters

Vika [28.1K]

Hi there!

Recall the following relationships:

$W = \Delta U = mg\Delta h\\\\P = \frac{W}{t}$

W = Work (J)

U = Potential Energy (J)

m = mass (kg)

g = acceleration due to gravity (9.8 m/s²)

h = height (m)

t = time (s)

Begin by calculating the work:

$W = 50(10)(8) = 4000 J$

Now, divide by the time to solve for power:

$P = \frac{4000}{5} = \boxed{800W}$

**W is the unit for power (Watts). Be careful not to get the two confused.

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3 years ago

Which statement is true ?

Kisachek [45]

Answer:

it depends only on the forces acting along the y axis I think

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3 years ago

Read 2 more answers

A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.50 × 10 4 1.50×104 rad/s to an angular s

KATRIN_1 [288]

Answer:

0.32 s

Explanation:

Initial angular speed: $\omega_i = 1.50 \cdot 10^4 rad/s$

Final angular speed: $\omega_f = 3.35\cdot 10^4 rad/s$

Angular rotation: $\theta=2.02\cdot 10^4 rad$

The angular acceleration of the drill can be found by using the equation:

$\omega_f^2 - \omega_i^2 = 2 \alpha \theta$

Re-arranging it, we find $\alpha$ , the angular acceleration:

$\alpha = \frac{\omega_f^2 - \omega_i^2}{2\theta}=\frac{(3.35\cdot 10^4 rad/s)^2-(1.50\cdot 10^4 rad/s)^2}{2(2.02\cdot 10^4 rad)}=22,209 rad/s^2$

Now we want to know the time t the drill takes to accelerate from

$\omega_i =0$

$\omega_f = 6.90\cdot 10^4 rad/s$

This can be found by using the equation

$\omega_f = \omega_i + \alpha t$

where $\alpha$ is the angular acceleration we found previously. Solving for t,

$t=\frac{\omega_f - \omega_i}{\alpha}=\frac{22,209 rad/s^2}{6.90\cdot 10^4 rad/s}=0.32 s$

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3 years ago

Electric fields and magnetic fields are both present near a charged atom.<br><br>True or false?

SpyIntel [72]

False just trust me it’s false

7 0

4 years ago

Describe what it meant by "a constant change of direction". Identify whether the examples provided show a constant change of dir

barxatty [35]

Answer:

Explanation:

i think good luck brainlyest n advanceee

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3 years ago