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2 years ago

How can you demonstrate that charged objects exert forces, both attractive and repulsive

Physics

1 answer:

Tcecarenko [31]2 years ago

8 0

If it attractive it has opposite pole and if it repulsive it has same pole

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Naoki's bicycle has a mass of 9 kg. If Naoki sits on her bicycle and starts pedaling with a force of 107.2 N, causing an acceler

Murrr4er [49]

Answer:

Explanation:

F = ma

m = F/a

m = 107.2/1.6 = 67 kg

so Naoki's mass must be the total mass - mass of the bike

so her mass is 67 - 9 = 58 kg...B

6 0

2 years ago

As you stand on a floor, the floor exerts an upward force on you. why are you not moved upward by this force? 1. the upward forc

dolphi86 [110]

Newton's third law of motion states that for any action, there is equal and opposite force. For a person standing on a floor, the action force is the weight and thus the floor must exert an opposite and equal reaction force equivalent in magnitude to the weight of the person.

In this regard, statement 3. is correct.

6 0

3 years ago

A box has a weight of 150 N and is being pulled across a horizontal floor by a force that has a magnitude of 110 N. The pulling

ivann1987 [24]

Answer:

42.99°

Explanation:

$F_h$ = Kinetic friction force

$F_{\theta}$ = Pulling force at angle $\theta$

$N_h$ = Weight of the box = 150 N

Kinetic friction force

$F_h=\muN_h$

Pulling force at angle $\theta$

$F_{\theta}=\muN_{\theta}$

N = Pulling force

According to question

$\frac{F_h}{F_{\theta}}=\frac{2}{1}\\\Rightarrow \frac{\muN_h}{\muN_{\theta}}=2\\\Rightarrow \frac{N_h}{N_{\theta}}=2\\\Rightarrow N_{\theta}=\frac{N_h}{2}\\\Rightarrow N_{\theta}=\frac{150}{2}\\\Rightarrow N_{\theta}=75\ N$

Applying Newton's second law in the vertical direction we get

$N_h-Nsin\theta=N_{\theta}\\\Rightarrow 150-110sin\theta=75\\\Rightarrow \theta=sin^{-1}\frac{75}{110}\\\Rightarrow \theta=42.99\ ^{\circ}$

The angle is 42.99°

8 0

3 years ago

Which of the following correctly summarizes the path of olfaction?

tatiyna

Hello!

The answer to your questions is C.

Chemicals in the air- olfactory epithelium- olfactory receptors- cilia-olfactory bulb- brain

~Hope this Helps!~

7 0

2 years ago

What should you keep in mind when selecting a ball hitch and coupler for towing your boat?

mrs_skeptik [129]

<span>There is only one thing that you must keep in mind, and that is that the ball hitch and coupler for towing have to be the same size. If not, then you can create a problem which can in turn result with damage to you and your boat and you would have to spend a lot of money to fix things or get a new boat.</span>

7 0

3 years ago