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Nady [450]
3 years ago
10

Give examples of not useful high friction

Physics
1 answer:
Tatiana [17]3 years ago
6 0
Friction can be bad by being too strong or too weak. 

<span>Sometimes, when it is too strong, it decreases efficiency since some energy is wasted and turns to heat. Friction can also d</span><span>amage equipment/objects like when you slide it on the floor.
</span>
When friction is too weak, like for instance when there is black ice- our center of gravity is displaced too quickly and we can fall. Likewise, if there is a lot of slush on the ground, cars can slip and slide.
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A solid conducting sphere is given a positive charge q. How is the charge q distributed in or on the sphere?
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Answer:

Explanation:

the sphere is solid and conducting, so the charge is uniformly distributed over its volume.

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Heartburn is a form of indigestion felt as a burning sensation in the chest when stomach acid comes back up into the esophagus.
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if a man has a mass of 83 kilograms on earth, what will the force of gravity on his body be on the moon
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5. From the definition of work, explain why only the vertical height of the stairs is measured. Hint: Think of the data table co
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8 0
3 years ago
A dog, with a mass of 10.0 kg, is standing on a flatboat so that he is 22.5 m from the shore. He walks 7.8 m on the boat toward
marissa [1.9K]

Answer:16.096

Explanation:

Given

mass of dog\left ( m_d\right )=10kg

mass of boat\left ( m_b\right )=46kg

distance moved by dog relative to ground=x_d

distance moved by boat relative to ground=x_b

Distance moved by dog relative to boat=7.8m

There no net force on the system therefore centre of mass of system remains at its position

0=m_d\times x_d+m_b\dot x_b

0=10\times x_d+46\dot x_b

x_d=-4.6x_b

i.e. boat will move opposite to the direction of dog

Now

|x_d|+|x_b|=7.8

substitutingx_dvalue

5.6|x_b|=7.8

|x_b|=1.392m

|x_d|=6.4032m

now the dog is  22.5-6.403=16.096m from shore

4 0
3 years ago
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