3 years ago

An ice cube floats in a glass of water. as the ice melts, what happens to the water level?

Physics

1 answer:

Norma-Jean [14]3 years ago

3 0

The water level rises, because ice is made of water

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A cannon at rest fires a 32.5 kg cannonball forward at 388 m/s. After firing, the cannon recoils at 7.42 m/s. What is the mass o

Bond [772]

Answer:

1700 kg

Explanation:

Let’s use conservation of momentum

32.5 * 388 = 7.42 * mc

mc = 1699.46

mc = 1700 kg

3 0

3 years ago

Question 2 (Multiple Choice Worth 3 points)

zmey [24]

Surveys are considered the most reliable way to gather data

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3 years ago

Using a force of 28.0 Newton, a student pulls a 70.0 Newton weight along the tabletop for a distance of 15.0 meters in 3.0 secon

Musya8 [376]

Answer:

140 watt

Explanation:

We are given that

Force applied by student ,F=28 N

Weight pulled by students=70 N

Displacement,s=15 m

Time=3 s

We have to find the power developed by the student.

Work done=w= $F\times s$

Work done by the student= $28\times 15=420 J$

Power= $\frac{work\;done}{time}$

Using the formula

Power= $\frac{420}{3}=140watt$

Hence, the power developed by the students=140 watt

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3 years ago

The process of gathering information through the senses is called what?

rodikova [14]

The answer is observation

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3 years ago

If your 1000 kg car ran out of gas and you had to push it into the gas station with a

Masteriza [31]

Answer:

a=0.05m/s²

Explanation:

force=mass × acceleration

f=ma

f=50N

m=1000kg

a=?

50=1000×a

50=1000a

a=50/1000

a=0.05m/s²

please rate as brainliest

4 0

1 year ago