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3 years ago

8

Which of the following is transferred to an object when work is done? A. motion B. energy C. force D. friction

1 answer:

ziro4ka [17]3 years ago

5 0

The answer will be letter B because after work people need some energy

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Unpolarized light passes through two ideal Polaroid sheets. The axis of the first is vertical and the axis of the second is at 3

andrew-mc [135]

Answer:

63.78%

Explanation:

The equation that relates the angle of the polarization and the intensity of ligth transmitted is I=Io*cos²(x), where I is the intensity of the incident light, Io is the intensity of the transmitted light, and x is the angle of polarization. The fraction of incident light will be I/Io, so the answer in given by cos²(37) = 0.6378

3 0

3 years ago

A piece of string 2 meters and has a mass of 5g. On one end of the string hangs a 200 g mass. Find the tension of the string and

viktelen [127]

Explanation:

It is given that,

Length of the string, l = 2 m

Mass of the string, $m=5\ g=5\times 10^{-3}\ kg$

Hanged mass in the string, $m'=200\ g=0.2\ kg$

1. The tension in the string is given by :

$T=m'g$

$T=0.2\times 9.8$

T = 1.96 N

2. Velocity of the transverse wave in the string is given by :

$v=\sqrt{\dfrac{T}{M}}$

m = M/l

$v=\sqrt{\dfrac{Tl}{m}}$

$v=\sqrt{\dfrac{1.96\times 2}{5\times 10^{-3}}}$

v = 28 m/s

Hence, this is the required solution.

4 0

3 years ago

___ radars show everything in fhe sky from servere weather to birds and mosquitoes to tornado debris

Sergio [31]

Answer:Geostationary

Explanation:Geo=Geographic=Climate=Enviroment=Animals

6 0

2 years ago

Read 2 more answers

Two carts collide on a low-friction track. Cart 1 has an initial momentum of +10 kg⋅m/sι^ and a final momentum of -5.0 kg⋅m/sι^

Basile [38]

According to the saving of the momentum, the total momentum before collision is equal to the total momentum after collision

<em><u>in symbols:</u></em>

<em> $P_{i1}+P_{i2}=P_{f1}+P_{f2}$ </em>

thus

$10+P_{i2}=(-5)+(-7)$

then, the initial momentum of the second cart

$P_{i2}=(-7)+(-5)+(10)=-23m/s$

6 0

3 years ago

Read 2 more answers

A bicycle rider travels 50.0 km in 2.5 hours. What is his average speed?

ycow [4]

50km / 2.5 = 20 km per hour

4 0

4 years ago