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3 years ago

The chemical symbol H represents which of the following elements?

Physics

2 answers:

olga55 [171]3 years ago

7 0

Answer:
Hydrogen

Explanation:

Helen [10]3 years ago

6 0

Answer:

Hydrogen

Explanation:

Hydrogen is a chemical element with chemical symbol H and atomic number 1. It also has an atomic weight of 1.008 u

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Why doesn't the skateboarder roll as high each time she goes up the ramp

Westkost [7]

Answer:

The skater has mechanical/gravitational potential energy at the two meter mark. The skater gets to two meters high on the other end of the ramp. In terms of the conservation of energy, the skater will never go higher than two meter on the other end of the the ramp because energy can be neither created nor destroyed.

Explanation:

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6 0

3 years ago

Read 2 more answers

The average density of the body of a fish is 1080 kg/m3. To keep from sinking, the fish increases its volumeby inflating an inte

Dimas [21]

Answer:

f = 8 %

Explanation:

given,

density of body of fish = 1080 kg/m³

density of air = 1.2 Kg/m³

density of water = 1000 kg/m²

to protect the fish from sinking volume should increased by the factor f

density of fish + density of water x increase factor = volume changes in water

1080 +f x 1.2 =(1 + f ) x 1000

1080 + f x 1.2 = 1000 + 1000 f

998.8 f = 80

f = 0.0800

f = 8 %

the volume increase factor of fish will be equal to f = 8 %

7 0

3 years ago

Select the correct answer. Eli and Andy want to find out which of the two is stronger. Eli pushes a table with a force of 120 ne

sergiy2304 [10]

Acceleration of the table: B. 0.50 meters/second2

Explanation:

The problem can be solved by using Newton's second law of motion, which states that the net force acting on an object is the product of its mass and its acceleration. Mathematically:

$\sum F = ma$

where

$\sum F$ is the net force

m is the mass

a is the acceleration

For the table in this problem, we have:

$\sum F = 125 N - 120 N = 5 N$ is the net force on the table, because there are two forces of 125 N and 120 N acting in opposite directions

m = 10.0 kg is the mass of the table

Solving for a, we find the acceleration:

$a=\frac{\sum F}{m}=\frac{5}{10.0}=0.50 m/s^2$

Learn more about Newton's second law:

brainly.com/question/3820012

#LearnwithBrainly

7 0

2 years ago

Read 2 more answers

Two students were pushing a heavy sofa. One student pushed with a force of 200.0 N to the right, while the other pushed with a f

makvit [3.9K]

Answer:

Explanation:

F = ma

a = F/m

a = (200.0 + 150.0 - 100.0) / 91.0

a = 250.0/91.0

a = 2.7472527...

a = 2.75 m/s²

8 0

2 years ago

In Astronomy List the systems of which the Earth is part of, from smallest to largest (most inclusive)?

djverab [1.8K]

Answer:

In order from largest to smallest these terms are:

In order from largest to smallest these terms are:Universe
In order from largest to smallest these terms are:UniverseGalaxy
In order from largest to smallest these terms are:UniverseGalaxySolar system
In order from largest to smallest these terms are:UniverseGalaxySolar systemStar
In order from largest to smallest these terms are:UniverseGalaxySolar systemStarPlanet
In order from largest to smallest these terms are:UniverseGalaxySolar systemStarPlanetMoon
In order from largest to smallest these terms are:UniverseGalaxySolar systemStarPlanetMoonAsteroid

In order from largest to smallest these terms are:UniverseGalaxySolar systemStarPlanetMoonAsteroidWe can generally say that a Moon is larger than an asteroid however some moons are quite large while others are smaller than many known asteroids. Asteroids are small rocky bodies that orbit the Sun, while moons are objects that orbit planets. Jupiter and Saturn have attracted many objects out of the asteroid belt and gathered them as moons.

3 0

2 years ago