Liquids usually have higher volume coefficients of expansion than solids do. true or false

Physics

2 answers:

Ulleksa [173]3 years ago

5 0

Answer: true

Explanation:

iren [92.7K]3 years ago

5 0

The answer is true! Hope this helps!! :)

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100 Points

solniwko [45]

Answer:

4) Isaac Newton was the first scientist to propose the idea that gravity increases distance between objects decrease

Explanation:

1 - Kepler may have inspired most of Newton's propositions, but there is no record of collaborating on the theory of universal gravitation.

2 - The universal gravitation theory resemble the works of other great scientists, but Newton was indeed the first to propose this idea of gravitation

3 - On the contrary, these scientists have shared concepts, with differences in accuracy that supersede each other to be accepted by the community (i.e: Einstein being at the forefront despite sharing some ideas with Newton)

8 0

3 years ago

A 2kg watermelon is dropped from a 4m tall roof a) use the appropriate kinematic equations to determine the instantaneous veloci

Ivenika [448]

Answer:

8.85m/s

Explanation:

The potential energy the watermelon held before dropping is Ep=mgh=2*9.8*4=78.4J.

When it strikes the ground, all of its Ep will transfer into Ek, so 1/2*m*v^2=78.4.

We already knew that m=2, so insert that in, we will get the V^2=78.4 m/s, V=8.85 m/s

6 0

3 years ago

An object moves in uniform circular motion at 25 m/s and takes 1.0 second to go a quarter circle. What is the radius of the circ

FromTheMoon [43]

Object Motion: 25 m/s

Circumference of Circle:
1/4 Circumference of Circle in 1 second = 25 meters
25 meters times 4 = Circumference of Circle
Circumference = 100 meters

Formula to Find Circumference of Circle: (work opposite)
C = 2πr

100 = 2πr divided
100/2π = r simplify
50/π = r (exact radius)

Answer:
50/π meters = r (exact radius)

4 0

3 years ago

Read 2 more answers

Please help me .finish this paper

Evgesh-ka [11]

Solution-1:-

$\boxed{\sf \dfrac{10\times 1000}{60\times 60}}$