3 years ago

Which of the following involves an endothermic reaction?

Physics

2 answers:

pav-90 [236]3 years ago

8 0

The answer would be c

photoshop1234 [79]3 years ago

7 0

It’s c :) A chemical hand warmer

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how does distance change when the amount of effort force is increasesd while the amount of work done remains the same?

nlexa [21]

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4 years ago

A pushing force that squeezes an object is called a ____ force.

Yanka [14]

The Answer Is Push
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3 years ago

An electromagnetic wave in a vacuum has a wavelength of 0.032 m. What is its frequency?

Sergio [31]

L=wavelength
L=0.032
c=Lf
f=c/L
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3 years ago

Una ola oceánica viaja a aproximadamente 1,97 m / s. Esto es 4 millas por hora. La frecuencia de las ondas es de aproximadamente

yKpoI14uk [10]

Answer:

λ = 28,14 m

Explanation:

To find the wavelength of the wave you use the following formula:

$v=\lambda f$ (1)

v: speed of the wave = 1,97 m/s

λ: wavelength

f: frequency of the wave = 0,07 Hz

You replace the values of v and f in the equation (1) and solve for λ:

$\lambda=\frac{v}{f}=\frac{1,97m/s}{0,07Hz}=28,14m$

hence, the wavelength of the wave is 28,14 m

5 0

4 years ago

What is the pressure exerted by a column of fresh water 10m high (p=1000kg/m3 and g=10m/s)

alexira [117]

Height (h) = 10 m
Density (ρ) = 1000 Kg/m^3
Acceleration due to gravity (g) = 10 m/s^2
We know, pressure in a fluid = hρg
Therefore, the pressure exerted by a column of fresh water
= hρg
= (10 × 1000 × 10) Pa
= 100000 Pa

Answer:

100000 Pa

Hope you could understand.

If you have any query, feel free to ask.

8 0

3 years ago