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Ede4ka [16]
3 years ago
12

Select the correct answer from each drop-down menu.

Physics
2 answers:
Zina [86]3 years ago
6 0

Answer:

I agree with the other guy, I think its lower to higher.

Explanation:

fgiga [73]3 years ago
5 0
Low place to a high place I think
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A 1-kg rock is suspended from the tip of a horizontal meterstick at the 0-cm mark so that the meterstick barely balances like a
tigry1 [53]

Explanation:

Given that,

Mass if the rock, m = 1 kg

It is  suspended from the tip of a horizontal meter stick at the 0-cm mark so that the meter stick barely balances like a seesaw when its fulcrum is at the 12.5-cm mark.

We need to find the mass of the meter stick. The force acting by the stone is

F = 1 × 9.8 = 9.8 N

Let W be the weight of the meter stick. If the net torque is zero on the stick then the stick does not move and it remains in equilibrium condition. So, taking torque about the pivot.

9.8\times 12.5=W\times (50-12.5)\\\\W=\dfrac{9.8\times 12.5}{37.5}

W = 3.266 N

The mass of the meters stick is :

m=\dfrac{W}{g}\\\\m=\dfrac{3.266}{9.81}\\\\m=0.333\ kg

So, the mass of the meter stick is 0.333 kg.

5 0
3 years ago
Which item is made from an alloy?<br> steel tray<br> glass plate<br> credit card <br> copper wire
SashulF [63]
Steel tray because steel is an iron-carbon alloy

5 0
3 years ago
A watt equals
Valentin [98]

Answer:

1 joule of energy per second :)

Explanation:

4 0
3 years ago
What is laser Optics, and where is it used?
alexdok [17]

Answer:  Laser optics is an laser instrumentation that is used to material processing which uses also coatings,substrates,and of different wavelengths of a superior performance

Explanation:

3 0
3 years ago
A car traveling at 15 m/s starts to decelerate steadily. It comes to a complete stop in 5 seconds. What is its acceleration ?
Nataliya [291]

Answer:

-3m {s}^{-2}

Explanation:

The initial velocity, u, of the car=15m/s

The final velocity, v, of the car =0m/s

Time, t, taken for the car to come to a stop=5s

Acceleration is calculated by,

a= \frac{v - u}{t}

By substitution,

a= \frac{0- 15}{5}

a= \frac{- 15}{5}

a = -3 {ms}^{ - 2}

The negative sign implies that the car has decelerated.

5 0
3 years ago
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