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3 years ago

A 105kg astronaut lands on the moon, with a weight of 170N. What is the acceleration due to gravity

Physics

1 answer:

Anvisha [2.4K]3 years ago

8 0

Explanation:

given: m= 105kg,f=170N,a=?

F = m×a

a = f/m

a=170/105

therefore, a=1.62m/s^2

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Number 3 is the naswer

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4 years ago

Which of the following is the correct equation we get

UkoKoshka [18]

Answer:

$\frac{a}{b}=c$ which agrees with the third answer in your list of answer options

Explanation:

Start with:

$a=b\,*\,c$

divide both sides by b to isolate c on the right:

$\frac{a}{b} =\frac{b\,*\,c}{b} \\\frac{a}{b} =c$

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3 years ago

A uniform solid sphere has a moment of inertia I about an axis tangent to its surface. What is the moment of inertia of this sph

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Answer:

option E

Explanation:

given,

I is moment of inertia about an axis tangent to its surface.

moment of inertia about the center of mass

$I_{CM} = \dfrac{2}{5}mR^2$ .....(1)

now, moment of inertia about tangent

$I= \dfrac{2}{5}mR^2 + mR^2$

$I= \dfrac{7}{5}mR^2$ ...........(2)

dividing equation (1)/(2)

$\dfrac{I_{CM}}{I}= \dfrac{\dfrac{2}{5}mR^2}{\dfrac{7}{5}mR^2}$

$\dfrac{I_{CM}}{I}=\dfrac{2}{7}$

$I_{CM}=\dfrac{2}{7}I$

the correct answer is option E

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3 years ago

A helix with 17 turns has height H and radius R. Charge is distributed on the helix so that the charge density increases like (i

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The total charge on the helix is

Q = $\frac{221}{2}\sqrt{(\frac{H}{17})^2+(2\piR)^2$

Height of one turn = $\frac{H}{n}$

Horizontal distance in one turn = $2\pi R$

<h3>length of spring in one turn is</h3>

$l = \sqrt{h^2+(2\piR)^2}\\\\
l = \sqrt{(\frac{H}{n})^2+(2\piR)^2}
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So, the total length of spring

$L = n*l\\\\
L = n * \sqrt{(\frac{H}{n})^2+(2\piR)^2}
$

Therefore, charge on spring

$Q = \frac{1}{2}*L*(13-0)\\\\
Q = \frac{1}{2}*n\sqrt{(\frac{H}{n})^2+(2\piR)^2}*13\\\\
Q = \frac{1}{2}*17*13\sqrt{(\frac{H}{17})^2+(2\piR)^2}\\\\
Q = \frac{221}{2}\sqrt{(\frac{H}{17})^2+(2\piR)^2\\\\
$

For more information on linear charge density, visit

brainly.com/question/15359786

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2 years ago

the graph below shows the motion of an object over a certain period of time. various intervals of time are depicted by letters.

MA_775_DIABLO [31]

Answer:

Options (C) and (F).

Explanation:

Constant speed of an object is represented by the flat segment (a line parallel to the x-axis) on the graph of velocity and time.

In other words, flat segments represents no change in the velocity with respect to the time.

From the graph attached,

Being flat segments, C and F will represent the constant speed.

Therefore, Options (C) and (F) will be the correct options.

8 0

3 years ago