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dangina [55]
3 years ago
13

Which requires more work, carrying a 420 N knapsack up a 200 m hill or carrying a 210 knapsack up a 400 m hill? Why?

Physics
1 answer:
Katen [24]3 years ago
4 0

Answer:

b

Explanation:

because the weight/work increases bcz of the time period

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State characteristics of the images formed by pin - hole camera​
Leokris [45]

Answer:

Real image

Explanation:

The picture is real, but it is reversed and tiny. An picture generated by a pinhole camera has certain features. As compared item, the image created by a pinhole camera is normally pretty small and looks reversed both on the vertically and horizontally axis.

8 0
3 years ago
Two pucks collide with each other. after the collision they do not stick together. is kinetic energy conserved in the collision?
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Since they do not stick after collision hence collision is elastic. In elastic collision, both momentum and kinetic energy is conserved because in this type of collision, first body deforms but then quickly regains its former shape and transfers its kinetic energy to the second pluck.
So kinetic energy is conserved.
5 0
3 years ago
Convert 1.3 km to m
a_sh-v [17]

Answer: 1300m

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An increase in a sound's pitch corresponds to an increase in what other property?
Wittaler [7]
An increase in a sound's pitch corresponds to an increase in the frequency!
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STOP TO THINK 17.1 Two pulses on a string approach each other at speeds of 1 m/s. What is the shape of the string at t = 6 s?
Vinvika [58]

'The principle of superposition states that when two disturbance occupy the same space at the same time the resulting disturbance is the sum of two disturbances.'

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8 0
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