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3 years ago

A box is pushed horizontally with constant speed across a rough horizontal surface.

Physics

1 answer:

Natasha_Volkova [10]3 years ago

6 0

Answer:

what is the answers? so i can't answer.

Explanation:

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What is the magnitude of the force of gravity directed down the ramp ?

Ghella [55]

Mgsin50 = 200 sin 50

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3 years ago

A massless, rigid board is placed across two bathroom scales that are separated by a distance of 1.71 m. A person lies on the bo

Nata [24]

Answer:

Let the weight of the person be W and be located at a distance 'a' from the left scale as shown in the figure

Since the body is in equilibrium we can use equations of statics to analyse the problem.

Taking Sum of Moments about A we have

$316\times 1.71-W\times a=0\\\\$

Taking Sum of Moments about B we have

$475\times 1.71-W\times (1.71-a)=0\\\\$

Solving the above 2 equations for W and 'a' we get

$316\times 1.71=W\times a\\\\475\times 1.71-W\times 1.71=-Wa\\\\\therefore W=\frac{316+475}{1}=791N\\\\\therefore a=\frac{316\times 1.71}{791}=0.683m$

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3 years ago

A large reduction in the current account deficit will place ____ pressure on the home currency value, other things being equal.

shepuryov [24]

Answer:

Upward.

Explanation:

A large reduction in the current account deficit will place Upward pressure on the home currency value, other things being equal.

When their currency's value decreases, this means the valuation of foreign assets are rising. This further decreases the deficit in the current account. Additionally, a reduced currency value tends to increase export markets when prices become more cutthroat. Export demand falls as prices rise with inflation setting in.

6 0

4 years ago

Dolphins emit clicks of sound for communication and echolocation. A marine biologist is monitoring a dolphin swimming in seawate

LenKa [72]

Answer:

12.64968 Hz

Explanation:

v = Velocity of sound in seawater = 1522 m/s

u = Velocity of dolphin = 7.2 m/s

f' = Actual frequency = 2674 Hz

From Doppler effect we get the relation

$f=f'\frac{v-u}{v}\\\Rightarrow f=2674\frac{1522-7.2}{1522}\\\Rightarrow f=2661.35032\ Hz$

The frequency that will be received is 2661.35032 Hz

The difference in the frequency will be

$2674-2661.35032=12.64968\ Hz$

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4 years ago

Explain how the nebular model accounts for the differences between the terrestrial and gas giant planets.

anygoal [31]

Is there any Examples/Answers or is it simply just explain it in a text box?

4 0

3 years ago