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3 years ago

In the equation for the gravitational force between two objects, which quantity must be syuu

Physics

1 answer:

Anton [14]3 years ago

6 0

Answer:

it is F = G(m1)(m2)/d^2

Explanation:

lol you take ed genuity too

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On a straight stretch track a toy car is set rolling with an initial position of 16.0 cm, an initial velocity of-3.1 cm/s, and a

shusha [124]

Answer:

Part a)

the time after which both cars will have same speed is t = 4.05 s

Part b)

$v_a = v_b = 5.4 cm/s$

Part c)

t = 5.12 s

Part d)

$x_a = x_b = 39.15 cm$

Explanation:

Part a)

As we know that Car A is moving with initial speed 3.1 cm/s with deceleration 2.10 cm/s/s while car B is moving with constant 5.40 cm/s speed

Now if the speed of Car A and Car B will be same after some time

So we will have

$v_a = v_b$

$-3.10 + (2.10) t = 5.40$

$t = 4.05 s$

so the time after which both cars will have same speed is t = 4.05 s

Part b)

After this time when both cars have same speed

this speed will be same as that of speed of Car B as it is moving at constant speed

so we have

$v_a = v_b = 5.4 cm/s$

Part c)

if final position of both cars will be same

then we will have

$x_a = x_i + v_a t + \frac{1}{2}at^2$

$x_a = 16 + (-3.1) t + \frac{1}{2}(2.10)t^2$

also we have

$x_b = x_i + vt$

$x_b = 11.5 + 5.40 t$

now we have

$16 - 3.1 t + 1.05 t^2 = 11.5 + 5.40 t$

$1.05 t^2 - 8.50t + 16 = 0$

t = 5.12 s

Part d)

Final positions of both the particles is given as

$x_b = 11.5 + 5.40 t$

$x_b = 11.5 + (5.40)(5.12)$

$x_b = 39.15 cm$

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3 years ago

Work out formula for sulphur dioxide using swapping method?

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Uranium-235 has 92 protons. How many neutrons does it have?

Mrrafil [7]

Answer:

146 neutrons.

Explanation:

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