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victus00 [196]
3 years ago
13

What is the efficiency of the machine in Figure 7.2 if the weight of the box is 200 N and required 98 N of effort Force?

Physics
1 answer:
zepelin [54]3 years ago
3 0
this question is tricky but the answer is C
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If a wave vibrates back and forth 12 times each second, what is period of the wave?
Dmitrij [34]

Answer:

I think it might be 9 hz but not 100% shore though

Explanation:

7 0
3 years ago
In a distance -time graph: What type of motion does a curved line represent?​
Semmy [17]

Answer: If the speed of an object changes, it will be accelerating or decelerating . This can be shown as a curved line on a distance-time graph.

Explanation:

6 0
3 years ago
Compare and contrast the lithosphere and the asthenosphere(3 different 2 similarities)
worty [1.4K]
Before comparing and contrasting these layers of Earth, we first define what lithosphere and asthenosphere are. 

Lithosphere primarily consists of the outermost layers of the Earth, which are the crust and the uppermost portion of the mantle. Simply, the ground you stepped on is part of earth's lithosphere. On the other hand, asthenosphere comprises of hot and partially molten rock just located at the upper portion of the mantle but just below the lithosphere. Both have similarities and differences, which are as follows:

SIMILARITIES:
- Both are the passageways of earthquakes P-waves (Primary waves) just before it reaches the earth's surface.
- Both are made of the same material (Silicon oxide rocks, which are rich in iron and magnesium)

DIFFERENCES:
- Rocks in lithosphere can bend (it deforms, resulting in fault formations), however, rocks in the asthenosphere, not only bend but also flow (plastic in nature).
- Lithosphere has relatively low temperatures compared to asthenosphere.
- Due to its depth, pressure against rocks in asthenosphere is comparatively higher compared to lithosphere.

8 0
3 years ago
A balloon is filled with a gas at 111 kPa when the temperature was 22*C. If the temperature
storchak [24]

119.7kPa

Explanation:

Given parameters:

Pressure of gas in balloon = 111kPa

Temperature of gas = 22°C

Final temperature = 45°C

Unknown:

Final pressure = ?

Solution:

Since the gases in the balloon have the same number of moles. We can apply a derivative of the combined gas law to solve this problem.

At constant volume the pressure of a given mass of gas varies directly with the absolute temperature.

           \frac{P1}{T1}   =  \frac{P2}{T2}

P1 is the initial pressure

P2 is the final pressure

T1 is the initial temperature

T2 is the final temperature

 convert from celcius to kelvin:

       tK = 273 + tC

   T1 = 273 + 22 = 295K

   T2 = 273 + 45 = 318K

      \frac{111}{295}  =  \frac{P2}{318}

  P2 = 119.7kPa

learn more:

Ideal gas brainly.com/question/13064292

#learnwithBrainly

3 0
3 years ago
Gravitational potential energy is due to....
mote1985 [20]

Answer:

A

Explanation:

I only think its A because of the gravity part...sorry im not good at explaining

5 0
3 years ago
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