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3 years ago

5. A book is placed on a table. If the book exerts a force of 15 N'on the table,

Physics

1 answer:

blondinia [14]3 years ago

3 0

Answer:

Explanation:

The table is NOT in motion, so it will remain still. Newton's second law states that for every action, there's an equal and opposite reaction. Therefore, the table must push back the opposite direction(up) with the same force(15N)

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2 spheres are made from the same material. One is smaller and one is larger. Is the smaller sphere made up of smaller atoms than

motikmotik

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3 years ago

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Inessa05 [86]

Answer:

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3 years ago

Which type of electromagnetic waves have longer wavelengths that the waves that make up visible light.

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4 years ago

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You need to design a 60.0-Hz ac generator that has a maximum emf of 5200 V. The generator is to contain a 180-turn coil that has

OlgaM077 [116]

Answer:

0.082 T

Explanation:

Given:

Frequency of the generator (f) = 60.0 Hz

Maximum emf of the generator (E) = 5200 V

Number of turns (N) = 180

Area per turn (A) = 0.94 m²

Magnetic field magnitude (B) = ?

We know that, the angular frequency of the generator is given as:

$\omega=2\pi f$

Plug in the value of 'f' and solve for 'ω'. This gives,

$\omega=2\pi\times 60.0=120\pi\ rad/s$

Now, the maximum emf of the generator is given by the formula:

$E=NAB\omega$

Rewriting in terms of magnetic field, 'B', we get:

$B=\frac{E}{NA \omega}$

Plug in the given values and solve for 'B'. This gives,

$B=\frac{5200\ V}{180\times 0.94\ m^2\times 120\pi\ rad/s}\\\\B=\frac{5200\ V}{63786.897}\\\\B=0.082\ T$

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4 years ago

PLEASE HELP SOMEONE!!! An object is located 5.0 cm from a convex lens. The lens focuses light at a distance of 10.0 cm. What is

OverLord2011 [107]

Answer:

-10.0 cm

Explanation:

OK so in the equation they're having you use the variables are:

$d_o = 5.0 cm\\\\f = 10.0 cm\\\\d_i = ?$

So we simply plug in the variables:

$d_i = \frac{d_of}{d_o-f} \\\\d_i = \frac{5.0 * 10.0}{5.0 - 10.0}\\\\d_i = \frac{50}{-5}\\\\d_i = -10.0 cm$

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3 years ago