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3 years ago

Is 5.5 foot tall for a 13 year old Boy?

Physics

2 answers:

Effectus [21]3 years ago

7 0

Answer:

No. it is a little below average.

Explanation:

Law Incorporation [45]3 years ago

4 0

It’s around average height, maybe a little below

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Which wave has a wavelengh that is most likely seen as red light?

goblinko [34]

Answer:

Explanation:

Red light has wavelengths around 620 to 750 nm.

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3 years ago

Read 2 more answers

If a 5kg ball is rolling to the left and has a momentum of -25kg*m/s what is the velocity (not just speed) of the ball

Anna71 [15]

Answer:

The velocity of the ball is 5 m/s to the left.

Explanation:

-25kg*m/s divided by 5 kg gives

speed of -5 m/s

The velocity of the ball is 5 m/s to the left.

5 0

3 years ago

The illustration in figure below shows a uniform metre rule weighing 30 N pivoted on a wedge placed under the 40 cm mark and car

Nitella [24]

Answer:

W = 30 N

Explanation:

Applying the summation of torques about the wedge for equilibrium, taking the clockwise direction as negative. Since the ruler is balanced horizontally about the wedge. Therefore, the summation of all torques acting about the wedge must be equal to zero.

$(70\ N)(40\ cm - 10\ cm)-(30\ N)(50\ cm-40\ cm)-(W)(100\ cm - 40\ cm) = 0\\W(60\ cm) = (70\ N)(30\ cm)-(30\ N)(10\ cm)\\\\W = \frac{1800\ N.cm}{60\ cm}$

6 0

3 years ago

Which type of electromagnetic waves have the highest frequency

Sonja [21]

Gamma rays

they are at the end and their wave lengths are closer together

8 0

3 years ago

Q|C A bat, moving at 5.00 m/s , is chasing a flying insect. If the bat emits a 40.0 -kHz chirp and receives back an echo at 40.4

podryga [215]

The speed of the insect is 3.03m/s.

<h3>What is speed?</h3>

The speed of an object, also known as v in kinematics, is a scalar quantity that refers to the size of the change in that object's position over time or the size of the change in that object's position per unit of time. The instantaneous speed is the upper limit of the average speed as the duration of the time interval gets closer to zero. The average speed of an object over a period of time is calculated by dividing its distance traveled by the length of the interval. Distance divided by time is the dimension of speed.

Explanation:

The frequency that is received by the source after the reflection is given by,

$f_{1} =f_{0} (\frac{V-v}{V-V_{b} } )(\frac{V+v_{b} }{V+v} )$

$40.4=40 (\frac{343-v}{343-5} ) x (\frac{343+5}{343+v} )\\$

$v=3.03 m/s$

To learn more about speed ,visit:

brainly.com/question/6280317

#SPJ4

5 0

2 years ago