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erica [24]
3 years ago
5

Help help help please , i will give brainliest

Physics
2 answers:
finlep [7]3 years ago
6 0

Answer:

I believe the answer for #1 is D and the answer for #2 is B

Explanation:

I hope this is correct and helps

butalik [34]3 years ago
4 0

Answer:

Explanation:

One

No one can answer the first question. We are not sure what a,b,c,d refer to. But I can tell you want to look for. If you complete the ray diagram shown, and you extend both the blue and red lines until they meet, they should meet to the left of the focus. The image is very large. Redraw the diagram so that you see what I am saying.

Make the object about a cm from the focus.

Make the focal length roughly 4 cm long.

Now make another drawing. Keep the focal distance from the lens about the same.

Make the object  about 1 cm from the lens.

Now put the two rays that you had from the original diagram.

  • You should find that the image is still virtual.
  • It is still right side up.
  • It is smaller than the image of the first diagram.
  • It is much closer to the object.
  • The image is between the object and   the left focus.

Two

You have the orange ray going to the lens. So far so good. Where it hits the lens, you should draw an orange line from that point to F2. That makes A the answer.

If you want to know where the image is, draw a line from the top of the object to the center of the lens.

The intersect point should be

  • to the right of the object and
  • to the left of lens.
  • The image is smaller than the object
  • virtual
  • rightside up.
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6 0
3 years ago
3. Consider a locomotive and the rest of a freight train to be a single object. Suppose the locomotive is pulling the train up a
Nonamiya [84]

Answer:

Action - Pulling up the train.

Reaction - Friction on the locomotive

Explanation:

Locomotive is pulling the train upwards ,

Which is the action force applied by the locomotive,

As a reaction locomotive will be pulled by the train which is the reaction of pulling

Now, considering it as a action on locomotive , friction force will act on it as a reaction upwards which will result to move it upwards.

For train action is pulling up by locomotive and reaction will be friction acting on it downwards.

6 0
2 years ago
Which is a possible disadvantage of using flowing water to produce electricity?
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3 years ago
A 7-kg bowling ball moving at 4 m/s strikes a 1 kg bowling pin. If the ball slows to 2 m/s in 0.05 s, how much force does it exe
iren [92.7K]

Answer:

280 N

Explanation:

acceleration = v2-v1 / time taken = (2-4 )/ 0.05 = -40 m/s^2  ( neg sign indicates slowing down )

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since the 7 kg ball is slowing down, the  direction of force will be opposite of the initial velocity , and it will be 280 N

7 0
3 years ago
A 8.0-cm long solenoid has 2000 turns of wire and carries a current of 5.0-A. Calculate the strength of the magnetic field at th
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Answer:

B = 0.157 T

Explanation:

Given that,

Length of the solenoid, l = 8 cm = 0.08 m

Number of turns in the wire, N = 2000

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We need to find the strength of the magnetic field at the center of the solenoid. It is given by the formula as follows :

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So,

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So, the magnetic field at the center of the solenoid is 0.157 T.

6 0
3 years ago
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