3 years ago

Fill in the blank

Physics

1 answer:

aliina [53]3 years ago

8 0

Answer:

hypothesis

Explanation:

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An unstable nucleus results from too many or too few A) electrons. B) neutrons. C) protons. D) radons.

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B is most likely to fall apart. Please Mark Brainliest!

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4 years ago

During the spin cycle of your clothes washer, the tub rotates at a steady angular velocity of 31.7 rad/s. Find the angular displ

Crank

Answer:

$\Delta \theta = 3116.11\,rad$ and $\Delta \theta = 495.944\,rev$

Explanation:

The tub rotates at constant speed and the kinematic formula to describe the change in angular displacement ( $\Delta \theta$ ), measured in radians, is:

$\Delta \theta = \omega \cdot \Delta t$

Where:

$\omega$ - Steady angular speed, measured in radians per second.

$\Delta t$ - Time, measured in seconds.

If $\omega = 31.7\,\frac{rad}{s}$ and $\Delta t = 98.3\,s$ , then:

$\Delta \theta = \left(31.7\,\frac{rad}{s} \right)\cdot (98.3\,s)$

$\Delta \theta = 3116.11\,rad$

The change in angular displacement, measured in revolutions, is given by the following expression:

$\Delta \theta = (3116.11\,rad)\cdot \left(\frac{1}{2\pi} \frac{rev}{rad} \right)$

$\Delta \theta = 495.944\,rev$

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3 years ago

Please help no trolls no links

Amanda [17]

Answer:

When mass is greater, the force needed must be greater keeping the acceleration of the wheel chair constant

Explanation:

$force = mass \times acceleration \\ f \: \alpha \: m$

force is directly proportional to the mass

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3 years ago

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A big box of sausages (30 kg) are lifted from the ground to the top shelf of the freezer. If the box is lifted at a constant spe

morpeh [17]

Answer:

The work done by gravity moving the box up is -514.5 Joules.

Explanation:

The gravity acts in the direction of the displacement, which in this case is negative (ground - top shelf), and so the resulting work is negative. The work is calculated as:

$W_g = mg\Delta h = 30kg\cdot 9.8\frac{m}{s^2}\cdot(0-1.75)m=-514.5J$

The work done by gravity moving the box up is -514.5 Joules.

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3 years ago

Positively charged ions are surrounded by freely moving electrons in

ASHA 777 [7]

I believe the answer would be valence shells

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3 years ago