3 years ago

Which of the following best describes a completely elastic collision?

Physics

1 answer:

IRISSAK [1]3 years ago

3 0

The kinetic energy before equals K after

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Three types of physical cables that carry a signal are twisted pair, fiber optic, and ____.

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Fiber optic cable, twisted pair cable and coaxial cable are three major types of network cables used in communication systems

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1 year ago

What must the charge (sign and magnitude) of a particle of mass 1.49 g be for it to remain stationary when placed in a downward-

Kipish [7]

Answer;

= -2.18 × 10^-5 C

Explanation;

m = 1.49 × 10^-3 kg

Take downward direction as positive.

Fg = m g

E = 670 N/C

Fe = q E

Fe + Fg = 0

q E + m g = 0

q = -m g/E

= -1.49 × 10^-3 × 9.81/670

= -2.18 × 10^-5 C

= -2.18 × 10^-5 C

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3 years ago

Each vertical line on the graph is 1 millisecond (0.001 s) of time. What is the period and

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Explanation:

Given that,

Each vertical line on the graph is 1 millisecond (0.001 s) of time.

We need to find the period and the frequency of the sound wave. The period of a wave is equal to the each vertical line on graph i.e. 0.001 s.

Let f be the frequency of the sound wave. So,

f = 1/T

i.e.

$f=\dfrac{1}{0.001 }\\\\f=1000\ Hz$

So, the period and the frequency of the sound waves is 1 milliseond and 1000 Hz respectively.

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2 years ago

Suppose that the coefficient of kinetic friction between Zak's feet and the floor, while wearing socks, is 0.250. Knowing this,

insens350 [35]

Answer:

The distance travel before stopping is 1.84 m

Explanation:

Given :

coefficient of kinetic friction $\mu_{k} = 0.250$

Zak's speed $v = 3 \frac{m}{s}$

Gravitational acceleration $g = 9.8$ $\frac{m}{s^{2} }$

Work done by frictional force is given by,

$W = \Delta K$

$\mu _{k} mg d = \frac{1}{2} m v^{2}$

$d = \frac{v^{2} }{2 g \mu _{k} }$

$d = \frac{9}{2 \times 9.8 \times 0.250}$

$d = 1.84$ m

Therefore, the distance travel before stopping is 1.84 m

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3 years ago

Crystalline salts such as cesium bromide form _____ bonds with _______.

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Ionic bonds with electrostatic attractions

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3 years ago

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