Answer:
Mass of ball = 3.0102 Kg.
Explanation:
Potential energy at height h is given by
PE = mgh
where m is the mass of the body
g is the the acceleration due to gravity whose value is 9.8 m/s^2
h is the height from surface level
PE is potential energy
In the problem given h = 2 meters
PE = 59 joules
59 = m*9.8*2
=> m = 59/9.8*2 = 3.0102 Kg
Thus, mass of ball is 3.0102 Kg.
Explanation:
An atom is made up of three fundamental particles:
- Protons are positively charged particles in an atom
- Electrons are negatively charged.
- Neutrons carry no charges.
In a neutral atom, the number of protons and electrons are the same and equal.
Most atoms are usually depicted this way:
ᵃₙX
where a is the mass number of the atom.
n is the atomic number
X is the symbol of the atom
The mass number is the sum of the number of protons and neutrons
Atomic number is the number of protons.
In a neutral atom, the atomic number is also the number of electrons since the atom is neutral. It has not gained or lost any additional electrons.
Learn more:
Atomic number brainly.com/question/2057656
#learnwithBrainly
To that multiply 1.9 by 5 to get 9.5. The zebra has gone 9.5 m.
Answer:
Solids - Bricks , wood , Pottery, Bucket
Liquid - Water, soap, Sanitizers.
Gases - Aerosol in Deodorants, Chlorofluorocarbons in Fire extinguishers , Butane in lighters.