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3 years ago

ASAP! AWARDING BRAINLIEST see attached photo.

Physics

2 answers:

kobusy [5.1K]3 years ago

7 0

Answer:

I believe the answer would be B

stellarik [79]3 years ago

6 0

Answer:d

Explanation:

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Marlon is studying a crab population. He has a large batch of crabs that were captured in the ocean. He places a plastic tag on

tatiyna

First time I did it I got 2143658709

7 0

3 years ago

Rank the angular speed of the following objects, from highest to lowest:- A bowling ball of radius 12.3 cm rotating at 8.21 radi

dlinn [17]

Answer:

A bowling ball (8.21rad/s) > A tire (7.94rad/s) > A square (7.75rad/s) > A rock (6.98rad/s) > A top spinning (6.54rad/s)

Explanation:

To rank the angular speed (ω) of the objects, we need first calculate its value for every object:

A bowling ball of radius 12.3cm rotating at 8.21 radians per second:

ω = 8.21 rad/s

A tire of radius 0.321m rotating at 75.8 rpm:

$\omega = 75.8 \frac{rev}{min}\cdot \frac{2\pi rad}{1rev}\cdot \frac{1min}{60s} = 7.94rad/s$

A 6.84cm diameter top spinning at 375 degrees per second:

$\omega = 375 \frac{^\circ}{s}\cdot \frac{2\pi rad}{360^ \circ} = 6.54rad/s$

A square with sides (b) 0.458m long, whose corners are moving with tangential speed (v) 2.51 m/s as it rotates about its center:

$\omega = \frac{v}{r} = \frac{v}{\frac{b}{2}\sqrt 2} = \frac{2.51 m/s}{\frac{0.458 m}{2} \sqrt 2} = 7.75rad/s$

A rock on a string, being swung in a circle of radius 0.521 m with a centripetal acceleration (a) of 25.4 m/s²:

$\omega = \sqrt \frac{a}{r} = \sqrt \frac{25.4 m/s^{2}}{0.521m} = 6.98rad/s$

Now, the rank of the angular speed of the objects, from highest to lowest is:

A bowling ball (8.21rad/s) > A tire (7.94rad/s) > A square (7.75rad/s) > A rock (6.98rad/s) > A top spinning (6.54rad/s)

I hope it helps you!

4 0

3 years ago

Identifying Applications of Electromagnetic Waves

Anuta_ua [19.1K]

Answer:

gamma ray-destruction of cancer cells

Ultraviolet wave-disruption of DNA

X-ray-diagnosis of illnesses through medical

Explanation: on edg

4 0

3 years ago

What is the electric power used by an appliance if the current is 2 A and the voltage is 50 volts? Show work and include all uni

dem82 [27]

Both the answers from "Big D" and "N9KXF" are correct, but not complete. There is one aspect that needs to be remembered for AC power - the phase relationship between the voltage and current.

For AC power, the more complete equation for power is P = V * I * cosx, where x is the phase angle between voltage and current. 

If the phase angle between voltage and current is 90 degrees, then even though current may be flowing, the total power over a cycle would be zero. Reactive elements like inductors and capacitors have a 90degree phase relationship between voltage and current. They do not "dissipate" energy. They store energy and give it back during different parts of the AC cycle.

3 0

3 years ago

Forecasting the time of, location, and magnitude of a seismic event does not prevent

Drupady [299]

Forecasting the time of, location, and magnitude of a seismic event does not prevent
the event from happening, but it can help us reduce the destruction caused by
A) earthquakes.

4 0

3 years ago