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3 years ago

The planets that orbit the sun are large enough that their gravity produces a ________ shape.

Physics

1 answer:

marishachu [46]3 years ago

6 0

Answer:

a round shape. It has its own gravity to pull itself into a round shape

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Why efficiency of electrons causes negative charge

Yuri [45]

Answer:

Since opposite charges attract each other, the negatively charged electrons are attracted to the positively charged protons. ... Together, all of the electrons of an atom create a negative chargethat balances the positive charge of the protons in the atomic nucleus.

Explanation:

4 0

3 years ago

A nonconducting sphere contains positive charge distributed uniformly throughout its volume. Which statements about the potentia

just olya [345]

This statement about the potential due to the sphere is correct: THE POTENTIAL IS HIGHEST AT THE CENTER OF THE SPHERE.
The potential is highest at the center of the sphere because, charge usually flow from the region of higher potential to lower potential.

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4 years ago

A 0.10 kg meter stick is held perpendicular to a vertical wall by a 2.5 mm string going from the wall to the far end of the stic

il63 [147K]

Explanation:

Sum of moments = 0 (Equilibrium)

T . cos (Q)*L = m*g*L/2

$cos Q = \frac{\sqrt{(2.5^2 - L^2) } }{2.5}$

$T*\frac{\sqrt{(2.5^2 - L^2) } }{2.5} * L = 0.1 *9.81*L/2$

$T = \frac{2.4525}{\sqrt{(2.5)^2 - L^2} }$

b) If the String is shorter the Q increases; hence, Cos Q decreases which in turn increases Tension in the string due to inverse relationship!

$T = \frac{1.962}{\sqrt{(2)^2 - L^2} }$

6 0

3 years ago

the book has a mass of 2.5 kg. What net force must act on the book to mak it accelerate to the left at a rate of 7.0m/s2?

Reil [10]

Answer:

17.5 N

Explanation:

<h2>Given :</h2>

Mass (m) = 2.5 kg
Acceleration (a) = 7.0 m/s²

<h2>To calculate :</h2>

Force exerted (F)

<h2>Calculation :</h2>

→ F = (2.5 × 7.0) N

→ F = 25/10 × 7 N

→ F = 5/2 × 7 N

→ F = (5 × 7)/2 N

→ F = 35/2 N

→ <u>F</u><u> </u><u>=</u><u> </u><u>1</u><u>7</u><u>.</u><u>5</u><u> </u><u>N</u><u> </u><u>towards</u><u> </u><u>left</u>

Hence, 17.5 N of net force must act on the book to make it accelerate to the left.

5 0

3 years ago

How much power an appliance uses

kobusy [5.1K]

Answer:

it depends on the appliance

Explanation:

bigger appliances will use more power, smaller appliances will use a lesser amount

7 0

3 years ago