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Olenka [21]
3 years ago
13

A different group of students decided to do this experiment by

Physics
1 answer:
GaryK [48]3 years ago
8 0

Answer:

Using an object of less mass can reduce the energy lost due to friction.

Explanation:

let the mass of the object be M.

acceleration due to gravity be g, coefficient of kinetic friction between object and slider be \alpha  , angle between horizntal and slider be ∅ and distance slided by the object be d.

work done by friction of the ramp will be the energy lost by ramp due to friction.

work done = force×displacement

force = \alpha×M×g×cos∅

displacement= d

therefore work done =  \alpha×M×g×cos∅×d

therefore on decreasing the mass M we can see that work done by friction decreases so the energy lost due to friction also decreases.

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Zina [86]

The radial velocity method preferentially detects large planets close to the central star

  • what is the Radial velocity:

The radial velocity technique is able to detect planets around low-mass stars, such as M-type (red dwarf) stars.

This is due to the fact that low mass stars are more affected by the gravitational tug of planets.

When a planet orbits around a star, the star wobbles a little.

From this, we can determine the mass of the planet and its distance from the star.

hence we can say that,

option D is correct.

The radial velocity method preferentially detects large planets close to the central star

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5 0
2 years ago
The answer please? I have exam tomo
makkiz [27]

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Explanation:

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5 0
3 years ago
A sound that's produced by a single wave at a constant frequency and with no overtones is called
notka56 [123]
It is called a pure sound
7 0
3 years ago
Dinosaurs’ skeletons can be distinguished from those of other reptiles by the structure of the hips and legs.
jeyben [28]
True, they had a hole in their hip socket that allowed them to run faster than other reptiles of their size at the time. As well as most reptiles besides reptiles had legs to the side, rather than under them like dinosaurs did.

Hope this helps!
5 0
4 years ago
Two cars are moving in the same direction at the same speed of (72.0 kmh). What is
Licemer1 [7]

Answer:

0 km/h

Explanation:

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When two bodies move in the same direction then the relative speed is calculated as difference of their speeds.

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6 0
3 years ago
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