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nevsk [136]
3 years ago
10

When a pair of 10-n forces act on a box of candy, the net force on the box is?

Physics
2 answers:
Grace [21]3 years ago
8 0
Any of the above depending on the direction of forces
Gnesinka [82]3 years ago
7 0
It can be anything from zero to 20N. It depends on the directions of the forces.
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If the period of oscillation of a simple pendulum is 4s, find its length. If the velocity of the bob
Natalija [7]

Answer:

Explanation:

Because we assume the pendulum is a "mathematical pendulum" (neglecting the moment of inertia of the bob), we can find:

T=2\pi\sqrt{\frac{L}{g}} \rightarrow 4=2\pi\sqrt{\frac{L}{9.81}} \rightarrow \frac{4}{\pi^{2}}=\frac{L}{9.81} \rightarrow L \approx 3.97 m

By using the y=A\sin(\omega t)  \rightarrow v = \frac{dy}{dt}=\omega A \cos\omega t = \omega\sqrt{A^{2}-y^{2}}

The mean position is the position when <em>y</em> = 0, so:

\omega = \frac{2\pi}{T}=\frac{2\pi}{4}=0.5\pi rad/s

and v = \omega A \rightarrow A=\frac{40}{0.5\pi}=\frac{80}{\pi} in centimeters (cm).

4 0
2 years ago
Scenario 2: A dam was built California in 1999 to block the Santa Ana River and help generate
8_murik_8 [283]

Answer:

Some of the effects of a dam on the environment includes;

1) Increase in the amount of the greenhouse gases

2) Removal of the natural wetland and ocean carbon sinks

3) Disruption of the sources of nutrients in the ecosystem

4) Destruction of habitats

5) Raising of the sea levels and waste waters

6) Displace villages and communities

7) Dams have a potential to create flood risk

8) Dams lead to increased water loss due to evaporation and transpiration

9) Dams causes earthquakes

Explanation:

Dams are a source of renewable energy and are a means to prevent floods, however, dams can also have detrimental impact on the climate and the environment.

4 0
3 years ago
a 77 N net force is applied to a box which slides horizontally across a floor for 6.7 m. What amount of work is done on the box
ArbitrLikvidat [17]
W=fd
W=77*6.7
W=515.9 J
7 0
2 years ago
HELP!
dimaraw [331]
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I'm not sure, but I think those guys were awarded a Nobel Prize in Physics
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7 0
3 years ago
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How can understanding velocity help to prevent a mid-air collision
dsp73

Answer:

To maintain enough time to prevent a collision, a system operating in air traffic where aircraft speed does not

fall below 100 km/h (most medium-sized UAVs and GA aircraft) will need to be able to detect obstacles which

subtend an arc-width of as small as 0.125 mra

7 0
3 years ago
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