3 years ago

PLease help on this one and show work for brainliest?

Physics

1 answer:

Amiraneli [1.4K]3 years ago

3 0

c .... work is force x distance as a definition

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Two balls are at the same height and released at the same time. One ball is dropped and hits the ground 5s later. The 2nd ball i

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The second ball hits at the same time.

Distance travelled is 65 meters

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1 year ago

A car passes point “A” and then 120 meters later. It’s velocity was measured 21 m/s. If it’s acceleration was constant at 0.853

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Recall that

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So we have

$\left(21\dfrac{\rm m}{\rm s}\right)^2-{v_i}^2=2\left(0.853\dfrac{\rm m}{\mathrm s^2}\right)(120\,\mathrm m)$

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3 years ago

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How does the law of conservation of mass apply to this reaction: Al + 3HCl → H2 + AlCl3 ?

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An electric field of 1.27 kV/m and a magnetic field of 0.490 T act on a moving electron to produce no net force. If the fields a

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The electric field is 1.27 kV/m and the magnetic field is 0.49 T. We need to find the electron's speed if the fields are perpendicular to each other. The magnetic force is balanced by the electric force such that,

$qE=qvB\\\\v=\dfrac{E}{B}\\\\v=\dfrac{1.27\times 10^3}{0.49}\\\\v=2591.83\ m/s$

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