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Iteru [2.4K]
3 years ago
13

Will kilogram of hydrogen contains more atoms than kilogram of lead?

Physics
1 answer:
Zigmanuir [339]3 years ago
4 0
Yes a kg of hydrogen will have more atoms than a kg of lead, because lead has a higher atomic mass, than hydrogen so it will take more atoms of hydrogen to make a kg than lead
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A 0.25-kg ball sits on the roof of a building that is 10 meters tall. Find the GPE. (Gravity = 9.8 on Earth)
Tasya [4]

Gravitational potential energy = mgh or mass times acceleration due to gravity times the height

Here the mass is 0.25kg, the height is 10m, and gravity is 9.8m/s^2 so...

GPE = (0.25)(10)(9.8)

GPE = 24.5 J

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3 years ago
Anika asks Eva to roll a basketball and then a bowling ball to her. Which requires more force to roll, and why?
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The bowling ball will require more force to roll because it is more massive.
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2 years ago
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2 years ago
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fiasKO [112]

The distance of the rock from the base of the cliff is C) 20 m

Explanation:

The motion of the rock in this problem is a projectile motion, which consists of two independent motions:

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- An accelerated motion with constant acceleration (acceleration of gravity) in the vertical direction

We start by analyzing the vertical motion to find the time of flight of the rock (the time it takes to reach the ground). We can do it by using the suvat equation:

s=u_y t+\frac{1}{2}at^2

where, taking downward as positive direction,

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Now we can analzye the horizontal motion: the rock moves horizontally with a constant velocity of

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d=v_x t

and substituting t = 2.02 s, we find the final distance of the rock from the base of the cliff:

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Learn more about projectile motion:

brainly.com/question/8751410

#LearnwithBrainly

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2 years ago
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kozerog [31]
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F = 1 * 2

F = 2 N

Force needed is 2 Newtons.
5 0
3 years ago
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