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yulyashka [42]
3 years ago
11

What is a common source for a voltage difference

Physics
1 answer:
AVprozaik [17]3 years ago
8 0
<span>Batteries provide a voltage difference.</span>
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Even if all stars were the same distance from Earth, their absolute magnitude and
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Answer: True


hope this helps!

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Koi is climbing through a crevice and places her feet so that her body is perpendicular as shown below she then rest in this spo
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How does Newton's law of motion describe when and how objects move?
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3 0
3 years ago
Read 2 more answers
A ball weighing 1 lb is attached to a string 2 feet long and is whirled in a vertical circle at a constant speed of 10 ft/sec.
fredd [130]

Explanation:

It is given that,

Mass of the ball, m = 1 lb

Length of the string, l = r = 2 ft

Speed of motion, v = 10 ft/s

(a) The net tension in the string when the ball is at the top of the circle is given by :

F=\dfrac{mv^2}{r}-mg

F=m(\dfrac{v^2}{r}-g)

F=1\ lb\times (\dfrac{(10\ ft/s)^2}{2}-1\ lb\times 32\ ft/s^2)

F = 18 N

(b) The net tension in the string when the ball is at the bottom of the circle is given by :

F=\dfrac{mv^2}{r}+mg

F=m(\dfrac{v^2}{r}+g)

F=1\ lb\times (\dfrac{(10\ ft/s)^2}{2}+1\ lb\times 32\ ft/s^2)

F = 82 N

(c) Let h is the height where the ball at certain time from the top. So,

T=mg(\dfrac{r-h}{r})+\dfrac{mv^2}{r}

T=\dfrac{m}{r}(g(r-h)+v^2)

Since, v^2=u^2-2gh

T=\dfrac{m}{r}(u^2-3gh+gr)

Hence, this is the required solution.

6 0
3 years ago
Vector A with arrow lies in the xy plane. Both of its components will be negative if it points from the origin into which quadra
Blizzard [7]

Answer:

C

Explanation:

From the question we are told that a vector on the x and y plane face their negative axis

Generally  in the x and y plane thr negative y axis is made to face down opposite the positive y axis

Whilst the negative x axis faces the left which is also alternate to the positive x axis

Generally A vector pointing towards the x and y negative axis fro  the origin (0) will definitely be in the third quadrant

8 0
3 years ago
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