Answer: The scientists should form a hypothesis and design an experiment.
To form a scientific theory and law, the first step is always to formulate a question based on some observation. The n next step is to formulate a hypothesis and then an experiment is designed. The experiment is conducted and the data is collected and recorded. The, conclusions are drawn and results are communicated.
Hence, the next step after formulation of a question based on an observation, the scientist should form a hypothesis and design an experiment.
Answer:
density=mass/volume
density=19.3
mass=x
volume=100
we are looking for mass so we have to change the subject formula to m=dv
which means mass is equals to density multiplied by volume
m= 19.3 x 100
which is 1930.
Answer:
The work done on the jet by the catapult is 1.53 x 10⁷ J
Explanation:
Given;
force of thrust engines, F = 2.3 x 10⁵ N
distance moved by the thrust engines, d = 90 m
kinetic energy of the plane, K.E = 3.60 x 10⁷ J
Based on work-energy theorem;
the net work done on the plane by catapult and the thrust engine is given as;
work done by the thrust engine on the jet;
Work done on the jet by the catapult;
Therefore, the work done on the jet by the catapult is 1.53 x 10⁷ J