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Y_Kistochka [10]
2 years ago
6

A student obtained a sharp image of the grill of a window on a screen, using a convex lens. For getting better results, the teac

her suggested focusing on a distant tree instead of the grill. In which the direction should the lens be moved for this purpose?​
Physics
1 answer:
viktelen [127]2 years ago
4 0

Answer:

Towards the screen

Explanation:

When the image distance increases, object distance decreases. Thus, distance between the mirror and screen will decrease. So, the mirror should be moved towards the screen. When the image distance increases, object distance decreases.

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A nerve impulse travels along a myelinated neuron at 90.1 m/s.<br> What is this speed in mi/h?
algol [13]

Answer:

201.5537 mph

Explanation:

Given the following data;

Speed = 90.1 m/s

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the formula;

Speed = distance/time

To convert this value into miles per hour;

Conversion;

1 meter = 0.000621 mile

90.1 meters = 90.1 * 0.000621 = 0.05595 miles

1 metre per second = 2.237 miles per hour

90.1 meters per seconds = 90.1 * 2.237 = 201.5537 miles per hour

90.1 m/s = 201.5537 mph

7 0
2 years ago
A rock with a mass of 0.3 kg falls from the top of a cliff. If it takes the rock 2.5 s to reach the ground, what was the impulse
kaheart [24]
Impulse=force x time
force=mass x acceleration due to gravity
force=
300 \times 10 = 3000
impulse =3000 x 2.5= ( sorry i don't have a calculator right now so you must calculate this yourself)
I converted from kg to g because it is the standard.
Hope this helps you.
4 0
3 years ago
Is the alien theory a scientific claim? Why or why not?
spin [16.1K]
I'm not sure what the alien Theory says or if there really is such a theory. If the theory says that aliens definitely exist and that they have visited Earth in the past then the theory is totally and completely without any kind of support. It's not scientific in any way because there is no evidence for such a claim. It may be thought to be probable but no solid evidence has ever been presented.
8 0
2 years ago
Read 2 more answers
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alexdok [17]

Answer:

the date is the only thing that's the same everywhere you go because time is different

6 0
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You shove a chair with wheels(and let it go)and it starts moving across the floor. However,the chair soon shows down and comes t
GarryVolchara [31]

Answer:

Personally I think, that the answer is B.

Explanation:

4 0
2 years ago
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