Explanation:
We have,
Mass of an object is 0.5 kg
Force constant of the spring is 157 N/m
The object is released from rest when the spring is compressed 0.19 m.
(A) The force acting on the object is given by :
F = kx
(B) The force is simply given by :
F = ma
a is acceleration at that instant
rotational kinetic energy of it's particles
The properties of acids are: (A), (C) and (D).
Explanation:
Acids taste sour, and most
acids are poisonous. Furthermore, acids react with certain metals to
produce hydrogen gas. Few acids are corrosive as well. The option (B) is not valid because acids react with BASES (not with other acids) to produce salt and water. Hence A, C and D are the correct options.
Answer:
The required heat energy is .
Explanation:
The heat energy 'Q' required to raise the temperature of water is given by
where 'M' is the mass of water, 's' is the specific heat capacity of water and '' is the change of temperature.
Given, and we know that the specific heat capacity of water is .
Substituting the values in the above expression, the required heat energy is