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Gala2k [10]
3 years ago
13

Why the friction between an object and a surface is less than when the surface is titled than when the same surface is horizonta

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Physics
1 answer:
torisob [31]3 years ago
7 0

Answer:

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A railroad car of mass m is moving with speed u when it collides with and connects to a second railroad car of mass 3m, initiall
Black_prince [1.1K]
Take a look at the picture. The speed of the connected cars is 1/4 of the single car’s speed, and the kinetic energy is 1/4 of the single car’s kinetic energy

6 0
3 years ago
What is the mass of a crane that has a weight of 697,005.40N?
igomit [66]

Explanation:

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6 0
3 years ago
What is the pressure at the very bottom of a lake, which is 432 ft deep? (assume an air pressure of 1.013 ✕ 105 pa.)?
aleksley [76]
Preasure at the bottom would be Air Pressure at the top added to the pressure due to the water height.
so pressure = air pressure + hdg
where,
h = depth of the lake, (432ft into metres)
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8 0
4 years ago
Select the correct answer.
Monica [59]

Answer:

A. The speed of the wave increases four times.

3 0
3 years ago
Read 2 more answers
Compared to the size and density of Earth, the Moon has a A. smaller diameter and lower density B. smaller diameter and higher d
MrRa [10]

Answer:

(a) Moon has smaller diameter and lower density than earth

Explanation:

Moon has smaller diameter than earth earth has a diameter of 12742 km whereas moon has a diameter of 3474.21 km

So for density density is given by density=\frac{mass}{volume}

From the relation we can see that density is dependent on mass and volume directly proportional to mass and inversely proportional to diameter

But in case of earth and moon mass is more dominating than volume so density is less for moon than earth  

6 0
3 years ago
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