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3 years ago

Plss help im taking a quiz thx!!!

Physics

2 answers:

Iteru [2.4K]3 years ago

6 0

Answer:

David

Explanation:

Because he is not on the ride with Ben and Justine

ch4aika [34]3 years ago

6 0

Answer:c David

Explanation:

While the other are moving at a constant and David is standing still both of the two on the ride see each other as fixed points and the candy as well. Where David sees the other two moving in relation to his fixed point

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If C is 1kg and D is 100kg, and the initial velocities of both balls are 5m/s, how would the magnitude of the forces exerted by

kupik [55]

Answer:

Explanation:

The forces exerted by each mass is best understood in terms of their momentum.

Momentum is a sort of compelling force or impulse. It is given as:

Momentum = mass x velocity

Let us consider the momentum of the balls;

Substance C;

Mass = 1kg

Velocity = 5m/s

Momentum of C = 1 x 5 = 5kgm/s

Substance D:

Mass = 100kg

Velocity = 5m/s

Momentum of D = 100kg x 5m/s = 500kgm/s

Body D has a higher momentum compared to Body C. This suggests that body D will exert a higher force than C when they collide.

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4 years ago

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eimsori [14]

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4 years ago

An alpha particle (α), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an elect

beks73 [17]

Answer:

Speed of the alpha particle is $v=1.8180\times 10^3m/sec$

Explanation:

We have given charge on alpha particle $q=3.2\times 10^{-19}C$

Mass of the alpha particle $m=6.68\times 10^{-27}kg$

Potential difference $V=-3.45\times 10^{-3}volt$

We have to find the speed of the alpha particle

From energy conservation we know that

$\frac{1}{2}mv^2=qV$

$\frac{1}{2}\times 6.68\times 10^{-27}\times v^2=3.2\times 10^{-19}\times 3.45\times 10^{-3}$

$v=1.8180\times 10^3m/sec$

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3 years ago

Why dont animal cells need chloroplasts?

Zigmanuir [339]

Animals don't make Their own food. they instead depend on the food made by plants. hence no need for chloroplasts

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3 years ago

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Bromination of alkenes ?

Stells [14]

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2 years ago