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2 years ago

What type of charge is used as the test charge to determine the direction of electric fields?

Physics

1 answer:

Dmitriy789 [7]2 years ago

5 0

Answer:

B small positive charge

Explanation:

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The mechanical advantage to simple machines is that they allow a decreased input force to create a larger output force. please s

Rina8888 [55]

The mechanical advantage to simple machines is that they allow a decreased input force to create a larger output force.

TRUE

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2 years ago

A car moving with an initial speed of 25 m/s slows down to a speed of 5 m/s in 10 seconds Calculate a) the acceleration of the c

stealth61 [152]

Answer :

(a) The acceleration of the car is, $-2m/s^2$

(b) The distance covered by the car is, 150 m

Explanation :

By the 1st equation of motion,

$v=u+at$ ...........(1)

where,

v = final velocity = 5 m/s

u = initial velocity = 25 m/s

t = time = 10 s

a = acceleration of the car = ?

Now put all the given values in the above equation 1, we get:

$5m/s=25m/s+a\times (10s)$

$a=-2m/s^2$

The acceleration of the car is, $-2m/s^2$

By the 2nd equation of motion,

$s=ut+\frac{1}{2}at^2$ ...........(2)

where,

s = distance covered by the car = ?

u = initial velocity = 25 m/s

t = time = 10 s

a = acceleration of the car = $-2m/s^2$

Now put all the given values in the above equation 2, we get:

$s=(25m/s)\times (10s)+\frac{1}{2}\times (-2m/s^2)\times (10s)^2$

By solving the term, we get:

$s=150m$

The distance covered by the car is, 150 m

8 0

2 years ago

Which action would be most likely to cause hearing loss?

Archy [21]

If you dont wear protection while shooting a rifle it will damge your hear

4 0

2 years ago

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An object of mass m swings in a horizontal circle on a string of length L that tilts downward at angle θ. Find an expression for

VikaD [51]

We know that
g = LcosΘ
where g, L and Θ are centripetal gravity length, and angle of object
ω² = g/LcosΘ 
ω = √(g / LcosΘ)

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3 years ago

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In the park, there are 25 pigeons, 15 squirrels, 5 rabbits, and 5 stray cats. Why

Debora [2.8K]

Answer: Line graph should be used to show how one variable changes over time not to show multiple categories or variables are at one specific point in time.

Explanation:

In maths, statistics, and related fields, graphs are used to visually display variables and their values. In the case of line graphs, these are mainly used to display evolution or change of a variable over time. For example, a line graph can show how the number of divorces changed from 1920 to 2010.

In this context, the number of different animals in the park cannot be represented through a line graph because this situation does not imply a variable changing over time. Moreover, this situation includes multiple variables or categories of animals and the data shows only one specific point in time, which can be better represented through a bar graph.

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2 years ago