The gravity has traditionally been defined as a force of attraction between things that have masses.
Explanation:
Gravitational force is a type of attractive force. It is because of this force, that we are able to walk on this Earth. Also due to gravitational force, the solar system and the galaxies are existing in the universe. Sir Issac Newton first discovered this force. He postulated the universal law of gravity. And according to this law, the gravitational force will be acting between the objects having masses and separated by a distance. So in this law, it states that gravitational law is directly proportional to the product of masses and inversely proportional to the square of the distance between them.
Thus, the gravity has traditionally been defined as a force of attraction between things that have masses.
What is the volume of 35g of copper?
A rectangular solid is of unknown density is 5 metes long, 2 metes high and 4 meters wide. The mass of this solid is 300 grams. Given this information for this homogeneous (alike through) material, calculator its density.
I know that Density=mass/volume but i don't know the volume for that one ^
Please answer fast!
It is the first option because Rutherford had put forward the first option and Neils Bohr changed the model of an atom
B) 15 m/s
C) 1 m/s
D) 5 m/s
Answer:
A 3m/s
Explanation:
Took the test (k12)
A. An ionic bond is an attraction between oppositely charged ions. A covalent bond is a sharing of electrons between atoms.
B. A covalent bond is an attraction between oppositely charged ions. An ionic bond is a sharing of electrons between atoms.
C. There is no difference. Both an ionic bond and a covalent bond share electrons.
D. There is no difference. Both an ionic bond and a covalent bond are attractions between oppositely charged ions.
Question 3
What is a bond between a positive and a negative ion called?
A. covalent bond
B. ionic bond
C. metallic bond
D. polar bond
Question 4
Water (H2O) is composed of the same elements as hydrogen peroxide (H2O2). Why do these substances have different properties?
A.The atoms are arranged differently in each molecule.
B. The molecules are the same.
C. The atoms are the same.
D.Water has more atoms than hydrogen peroxide.
Question 5
What is the definition of a chemical bond?
A. a mutual attraction between the nuclei and electrons in two different atoms
B. a mutual attraction between the nuclei and electrons in a single atom
C. a mutual repulsion between the nuclei and electrons in two different atoms
D. a mutual repulsion between the nuclei and electrons in a single atom
Answer:
t = 1.05 s
Explanation:
Given,
The distance between your vehicle and car, 100 ft
The constant speed of your vehicle, u = 95 ft/s
Since, the velocity is constant, a =0
If the car stopped suddenly, time left for you to hit the brake, t = ?
Using the second equation of motion,
S = ut + ½ at²
Substituting the given values in the equation
100 = 95 x t
t = 100/95
= 1.05 s
Hence, the time left for you to hit the brakes and stop before rear ending them, t = 1.05 s