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andrezito [222]
3 years ago
15

Is anyone good with 9-10th grade physics?? Please pm me I have a few questions.

Physics
1 answer:
Tcecarenko [31]3 years ago
3 0
Let's give it a whirl ..... 
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If all the magnetic domains in a sample of ferromagnetic material point in the same direction, then around the sample we definit
Darina [25.2K]

Answer:

i dont know it i just needed to answer so yea

Explanation:

hope you get the answer .

5 0
3 years ago
Read 2 more answers
Fig. 2.1 shows a train
Vitek1552 [10]

Answer:

\mathrm{(a)\:}32,000,000\:\mathrm{Ns},\\\mathrm{(b)\:}390,000\:\mathrm{N}

Explanation:

The impulse-momentum theorem states the impulse on an object is equal to the change in momentum of that object. Momentum is given by p=mv. Since mass is constant, the train's change in momentum is:

\Delta p=m\Delta v=750,000\cdot42=31,500,000=\fbox{$32,000,000\:\mathrm{Ns}$}(two significant figures).

Impulse is also given as \Delta p = F\Delta t, where F is the average force applied and \Delta t is change in time. Since t is given as 80\mathrm{s}, we have the following equation:

F\Delta t=\Delta p\\\\F=\frac{\Delta p}{\Delta t},\\\\F=\frac{31,500,000}{80},\\\\F=393,750=\fbox{$390,000\:\mathrm{N}$}(two significant figures).

7 0
3 years ago
What resistance would produce a current of 120 amps from a 6-volt battery?
Verdich [7]
It would be 8 so that would be you answer
8 0
3 years ago
Drew observed in an experiment that algae in a nearby lake could be found at six meters below the water's surface on a clear day
babymother [125]

In this question the options are missing; here are the options:

What was the dependent variable in Drew's experiment?

A. The depth at which the algae were found

B. The sky conditions on a particular day

C. The amount of algae measured

D. The lake that was being observed

The answer to this question A. The depth at which the algae were found

Explanation:

In an experiment, it is common there are at least two factors or variables. Additionally, the variable that is modified by others or that depend on others is always the dependent variable.

In the case of the experiment presented, there are two main factors: sky conditions and depth at which algae can be found. From these, the dependent factor is the depth because this depth changes with the sky condition or depends on the sky conditions. Also, the dependent variable is always the factor being studied, for example, in this case, Drew's focus is to study how the location of algae in terms of depth changes.

8 0
3 years ago
What is the role of the brain in helping an animal interact with its environment?
Masteriza [31]

Answer:

The nature of the environment and the animal's interaction with it determines much of the character of the brain.

Explanation:

In fact, most of what we would use to describe ourselves to others reflects this sort of information storage.   Much of this information is unique to the individual and hence may involve different mechanisms from those used for species-typical information storage.

3 0
3 years ago
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