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4 years ago

15

Cooling causes a material to

2 answers:

Ad libitum [116K]4 years ago

6 0

Answer:

2 Key Concepts Heating and cooling can cause materials to change characteristics, such as state, color, and texture. Heating causes ice to become liquid water and cooling causes condensation to form on a window, mirror, or on the outside of a glass of water.

Explanation:

e-lub [12.9K]4 years ago

4 0

Answer:

whats the question?

Explanation:

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Why is it important to practice a presentation?

-Dominant- [34]

Your answer should be D
let me know if I got it wrong
Hope this helped!

6 0

3 years ago

Read 2 more answers

According to Wien's Law, how many times hotter is an object whose blackbody emission spectrum peaks in the blue, at a wave lengt

scZoUnD [109]

Answer:1.55 times

Explanation:

Given

First wavelength $(\lambda _1)=450 nm$

Second wavelength $(\lambda _2)=700 nm$

According wien's diplacement law

$\lambda T=constant$

where $\lambda =wavelength$

T=Temperature

Let $T_1 and T_2$ be the temperatures corresponding to $\lambda _1 & \lambda _2$ respectively.

$\lambda _1\times T_1=\lambda _2\times T_2$

$\frac{T_1}{T_2}=\frac{\lambda _2}{\lambda _1}$

$\frac{T_1}{T_2}=\frac{700}{450}=1.55$

Thus object with $\lambda 450 nm$ is 1.55 times hotter than object with wavelength $\lambda =700 nm$

8 0

3 years ago

Steam types of<br> forces in<br> nature

max2010maxim [7]

Answer:

Gravity, Weak, Electromagnetic and Strong.

7 0

3 years ago

CN you help me with this question?

qaws [65]

25% i believe because if were talking 50 percent half it would be 25.

8 0

3 years ago

Q1. Helmut rides 5km in 2h on his bike. His speed was *

baherus [9]

Answer:

Speed of bike = 2.5 km/h

Distance travel = 1,000 km (Approx.)

Explanation:

Given:

Distance cover by Helmut = 5 km

Time taken = 2 hour

Find:

Speed of bike

Computation:

Speed = Distance / Time

Speed of bike = 5 / 2

Speed of bike = 2.5 km/h

Given:

Speed of plane = 250 km/h

time taken = 3 hr 58 min = 3.967 hr

Find:

Distance travel

Computation:

Distance = Speed x time

Distance travel = 250 x 3.967

Distance travel = 991.669

Distance travel = 1,000 km (Approx.)

8 0

3 years ago