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vlada-n [284]
4 years ago
9

ALWAYS uso significant figure rules, Remember that these rules apply to all numbers that are measurements

Physics
1 answer:
Vedmedyk [2.9K]4 years ago
5 0

Answer:

40 mph

Explanation:

Velocity is displacement over time.  Displacement is the straight line distance between the starting point and ending point.

v = x / t

v = 320 mi / 8 hr

v = 40 mph

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A charged particle moving along the x-axis enters a uniform magnetic field pointing along the z-axis. Because of an electric fie
Furkat [3]

Answer:

Explanation:

Let the charge particle have charge equal to +q .

force due to electric field will be along the field that is along y - axis . To balance it force by magnetic force must be along   - y axis. ( negative of y axis )

force due to magnetic field = q ( v x B ) , v is velocity and B is magnetic field.

F = q ( v i x B k )  , ( velocity is along x direction and magnetic field is along z axis. )

= (Bqv) - j  

= - Bqv j

The force will be along - ve y - direction .

If we take charge as negative or - q

force due to electric field will be along - y axis .

magnetic force = F = -q ( v i x B k )

= +  Bqv j

magnetic force will be along  + y axis

So it is difficult to find out the nature of charge on the  particle from this experiment.

5 0
4 years ago
Please help need answers asap ​
Soloha48 [4]
Answer- Helium
You can by the number of protons, and if you look at a periodic table the atomic number of helium is the same as the number of protons
4 0
3 years ago
Which type of graph gives the most information about how the position of a moving object changes relative to a reference point?
Paraphin [41]

Answer:

My opinion is B it sounds more reasonable

6 0
3 years ago
Does the car's<br> speed alone<br> determine<br> whether the egg<br> breaks?
blsea [12.9K]

Answer:

yes it is

Explanation:

when the speed increases the car will vibration than egg will breaks

4 0
3 years ago
Read 2 more answers
What is the spring potential energy of a spring that is stretched 15 cm if its spring constant is 350 n/m?
VladimirAG [237]

Answer:

Spring potential energy = 7.875Nm

Explanation:

<u>Given the following data;</u>

Extension, e = 15cm to meters = 15/100 = 0.15m

Spring constant, k = 350n/m

To find the force;

Force = spring constant * extension

Force = 350 * 0.15

Force = 52.5 Newton.

Now to find the spring potential energy we would use the formula below;

Spring potential energy = force * extension

Substituting into the equation, we have;

Spring potential energy = 52.5 * 0.15

<em>Spring potential energy = 7.875Nm</em>

6 0
3 years ago
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