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Damm [24]
3 years ago
15

A ball is thrown straight up with a speed of 30

Physics
1 answer:
konstantin123 [22]3 years ago
4 0

Answer:

A ball is thrown straight up with a speed of 30

m/s. What is the maximum height reached by

the ball?

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The maximum current output of a 60 ω circuit is 11 A. What is the rms voltage of the circuit?
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Answer:

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Explanation:

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A 2,200-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 3.40 m before coming into contact
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Answer:

The magnitude of Force is 8.58×10⁵N and direction is upwards

Explanation:

The work beam does on the pile driver is given by

W=(FCos180°)Δx= -F(0.088m)

From work energy theorem

W_{nc}=(KE_{f}-KE_{i})+(PE_{f}-PE_{i})\\W_{nc}=1/2m(vf^{2}-vi^{2})+mg(yf-yi)

Choosing y=0 at the the level where the driver first contacts the beam and vi=0 at yi=+3.40m and comes to rest again vf=0 at yf= -0.088m

So

-F(0.088m)=1/2m(0-0)+2,200kg(9.81m/s^{2} )(-0.088m-3.40m)\\-F(0.088)=-75508.224\\F=75508.224/0.088\\F=8.58*10^{5} N

The magnitude of Force is 8.58×10⁵N and direction is upwards

6 0
3 years ago
Light is an example of something that travels in waves. Light waves come in many different varieties, and can be seen as many di
Anuta_ua [19.1K]

Answer:

Option (B)

Explanation:

Light is a form of electro-magnetic waves. This light wave has distinct range of wavelength that allows it to form different colors of light. This means that the color of the light produces depending on the amount of wavelength it comprises.

The visible light ranges from Violet to Red, and this is observed as different colors when each of these electromagnetic waves strikes our eyes at a certain angle. The violet light has the shortest wavelength of about 410 nm, where the red light has the highest wavelength of about 650 nm.

Thus, the correct answer is option (B).

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THE ANSWER IS B HOPE I  COULD HELP

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By examining a wave's pattern after it interacts with a barrier or gap, measurements can be made to better understand certain wa
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Sample Response: How does diffraction occur?

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