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Elis [28]
3 years ago
9

Janelle is exploring the relationship between the brightness of a light bulb and the current that powers it. When applying these

currents to the same bulb, the bulb is brighter when the current is greater. Which lists the currents in the order of the bulb brightness they cause from most bright to least bright?
a) WYXZb) YWZXc) WYZXd) XZWY
Physics
1 answer:
Vlada [557]3 years ago
7 0

Answer:B

Explanation:

Y is the brightest bulb

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An extraterrestrial creature is standing in front of plane mirror. The height of this creature is H and we know that this creatu
Tatiana [17]

Answer:

c. (H-h/2) above the ground

Explanation:

The mirror must be at least half as tall as the alien, and its base must be located at half of the distance between the alien's eyes and the ground (assuming that the alien doesn't float or levitate).

This question is about the Law of Reflection which states that the angle of reflection = angle of incidence.

I attached an image that can help you understand the concept, although the alien is not included.

7 0
2 years ago
PLEASE HELP
elixir [45]
The answer is d. most definitely.
6 0
3 years ago
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Kyle, a 95.0 kg football player, leaps straight up into the air (with no horizontal velocity) to catch a pass. He catches the 0.
babymother [125]

Answer:

The initial speed of the ball was 26.2 m/s

Explanation:

When the football player is in the air at his maximum height the vertical component of velocity is zero, To obtain the horizontal velocity when the player catches the ball we need to apply the linear momentum conservation theorem:

m_1*v_{o1}+m_2*v_{o2}=m_t*v_f\\0.430kg*(v)+m_2*(0)=mt*vt

we need to obtain the time taken to go down.

y=Y_o+v_o*t-\frac{1}{2}g*t^2\\\\0=0.589-4.9t^2\\solving:\\t_1=0.346s\\

We have a horizontal displacement and the time taken to stop, so:

v_f=\frac{d}{t}=\frac{0.0409m}{0.346s}=0.118m/s

so:

0.430kg*(v)+m_2*(0)=(m1+m2)*vt\\v=\frac{(95.0kg+0.430kg)*0.118m/s}{0.430kg}\\\\v=26.2m/s

8 0
2 years ago
PLEASE HELP ASAP
morpeh [17]
A is the correct answer
7 0
3 years ago
Organism would make the best index fossil. Answers a , b , c , d please help
aivan3 [116]

Answer: You didn't put what a, b, c, or d is so how is anyone supposed to know what the answer is?

5 0
3 years ago
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