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3 years ago

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which of following categories of small bodies in the solar system does ceres belong to?. . . A.Dwarf Planets. B.Comets. C.Astero

ids. D.Planets

2 answers:

FromTheMoon [43]3 years ago

6 0

I suggest you to choose A. as ceres belong to Dwarf Planets.

olchik [2.2K]3 years ago

5 0

The category of small bodies that the solar system Ceres belongs to is the Dwarf Planets. The correct answer is A, dwarf planets.

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A mass hangs on the end of a massless rope. The pendulum is held horizontal and released from rest. When the mass reaches the bo

drek231 [11]

Answer:

$T = 37.5 N$

Explanation:

As the pendulum reached to the lowest position then we will have

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$14.2 - m(9.81) = \frac{m(2.9^2)}{L}$

now when it will reach to the height of the peg then its speed is given as

$v_f^2 - v_i^2 = 2 a d$

so we will have

$v_f^2 - 2.9^2 = 2(-9.81)(\frac{L}{5})$

$v_f^2 = 2.9^2 - 3.924L$

also we know that

$2.9^2 - 0 = 2(9.81)(L)$

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now we have speed of the pendulum when it reach the same height is given as

$v_f^2 = 2.9^2 - (3.924(0.43)$

$v_f = 2.6 m/s$

Now the tension in the string is given as

$T = \frac{mv_f^2}{\frac{L}{5}}$

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$T = 37.5 N$

6 0

4 years ago

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aliya0001 [1]

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3 years ago

The speed of a certain proton is 350 km/s. If the uncertainty in its momentum is 0.100%, what is the necessary uncertainty in it

Evgesh-ka [11]

Answer:

$\Delta x = 1.807 \times 10^{-10}m$

Explanation:

mass of proton, m = 1.67 x 10^-27 kg

speed of proton, v = 350 km/s = 350,000 m/s

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p = 1.67 x 10^-27 x 350000 = 5.845 x 10^-22 kg m /s

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$\Delta x\times 5.845 \times 10^{-25}= \frac{6.634 \times 10^{-34}}{2\times 3.14}$

$\Delta x = 1.807 \times 10^{-10}m$

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Kruka [31]

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4 years ago

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