second grade science

Let us now calculate the force of gravitation existing between two unit masses separated by a unit distance. m 1 = 1 kg m 2 = 1 kg d = 1m G = 6.6734 x 10 - 1 1 Nm 2 /kg 2 This is a very weak force. To find Force existing between two objects of masses 60kg and 100kg sep..

Question: The second equation of motion for a freely falling body starting from rest is _______. 1. 2. 3. 4. Answer: ..

Question: 1 km/h = _____ m/s 1. 2. 3. 4. Answer: ..

Question: The S-t graph for uniform speed is 1. 2. 3. 4. Answer: 2..

Question: The relation between wave velocity 'v', frequency 'f ', and wavelength ' l ' is ______. 1. 2. 3. 4. Answer: 2..

Which of the following two nuclei are isotopes of each other..

Classify the following elements as metals or non-metals based on valence electron..

Mass of the body (m) = 5 kg Velocity of the body (v) = 15 m/s Kinetic energy Kinetic energy = 562.5 J 02. A dog of mass 20 kg is running at a constant speed of 12 m/s. Calculate the kinetic energy of the dog while it is runni..

Question: Who was Gregor Mendel and what was his contribution to science? Answer: Gregor Mendel was an Austrian monk who first started the study of inheritance in an organized manner. This was the beginning of genetics and therefore, he is called the Father of Genetic..