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3 years ago

PLEASEEEEE HELPP ILL DO ANYTHING

Physics

1 answer:

Lynna [10]3 years ago

3 0

100 mm and 200mm and 300mm , hope this helps hope helps .!.‘SMS’sendndnnddndm hope thief helps

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Calcular la rapidez promedio

Vlada [557]

Answer:

v_average = 15 m / s

Explanation:

The average speed can be found in two ways,

* taking the distance traveled and divide it by the time spent

* taking the velocities in each time interval and then finding the weighted average by the time fraction

v_average = 1 / t_total ∑ $v_{i} t_{i}$ vi ti

Let's apply this last equation

Total time is

t = t₁ + t₂

t = 10 + 10 = 20 min

v_average = 10/20 10 + 10/20 20

v_average = 10/2 + 20/2

v_average = 15 m / s

7 0

3 years ago

How do you convert 1.3*10^6cal into joules

ehidna [41]

Answer:

5.4×10⁶J

Explanation:

1 cal = 4.184 J

1.3×10⁶ cal × (4.184 J/cal) = 5.4×10⁶J

3 0

3 years ago

Two point charges are brought closer together, increasing the force between them by a factor of 20. By what factor was their sep

olga55 [171]

The separation between them is $\frac{r}{\sqrt{20} }$

Concept :

If the force increases, distance between charges must decrease. Force is indirectly proportional to the distance squared.

Given,

Two point charges are brought closer together, increasing the force between them by a factor of 20.

Original force is

F = $\frac{kq_{1} q_{2} }{r^{2} }$ -------- ( 1 )

Here, $q_{1} , q_{2}$ are charges and r is the distance between them

New force F' = $\frac{kq_{1q_{2} } }{r'^{2} }$ ----------- (2 )

Divide ( 1 ) and ( 2 )

$\frac{F'}{F}$ = $\frac{\frac{kq_{1}q_{2} }{r'^{2} } }{\frac{kq_{1}_{2} }{r^{2} } }$

20 = $\frac{r^{2} }{r'^{2} }$

r' = $\frac{r}{\sqrt{20} }$

Given that force between them are increasing and therefore distance between them decrease by $\frac{r}{\sqrt{20} }$

Learn more about two point charges here : brainly.com/question/24206363

#SPJ4

8 0

2 years ago

If you weigh 150 lbs. on the surface of Earth, how much would you weigh on Venus? On Mars?

Ghella [55]

Answer:

weight on Venus = 604.15 N

weight on Venus = 252.01 N

Explanation:

Given:

Weight on the earth , W = 150 lbs

now,

1 lbs = 4.45 N

thus,

W = 150 × 4.45 = 667.5 N

now, mass on the earth, m = 667.5/9.8 = 68.11 kg

now,

⇒ weight on Venus,

the acceleration due to gravity on venus = 8.87 m/s²

thus,

weight on Venus = mass × acceleration due to gravity on venus

weight on Venus = 68.11 × 8.87 = 604.15 N

⇒ weight on mars,

the acceleration due to gravity on mars = 3.70 m/s²

thus,

weight on Venus = mass × acceleration due to gravity on venus

weight on Venus = 68.11 × 3.70 = 252.01 N

7 0

4 years ago

An student writes a bird that is divining for prey has speed of _ 10m/s what is wrong with the statement.

Anika [276]

Answer:

The description including its issue is summarized throughout the clarification portion below.

Explanation:

Speed would be a measurement of size. Which has only significance and therefore no path or guidance. Student says acceleration of -10m/s, therefore this assumption is incorrect because this same negative correlation indicates the path.
In reality, this same participant defined the speed (which seems to have two very different motion of an object).

4 0

3 years ago